What is the best way to travel from Phoenix, AZ to St. Louis, MO?
Looking for a trip? Compare all the available Flights and Buses for the journey to St. Louis, MO from Phoenix, AZ. Check between different modes of transportation, look for the cheapest tickets, fastest rides and most popular stations, and see all 2 available companies to find your perfect trip!
What is the cheapest way to reach St. Louis, MO from Phoenix, AZ?
You can get to St. Louis, MO with just $78 by taking a Flight from Frontier Airlines, but you can find many more cheap offers: we have selected the best ones for next few days here for you.
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Frontier Airlines24h 54m04:29 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport7:23 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/2/2026 4:29:00 PM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/3/2026 7:23:00 PM. 50 Economy ticket for $85 per person are available. Travel duration is 24h 54m
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Frontier Airlines22h 32m06:51 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport7:23 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/2/2026 6:51:00 PM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/3/2026 7:23:00 PM. 50 Economy ticket for $85 per person are available. Travel duration is 22h 32m
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United Airlines6h 56m06:50 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport3:46 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from United Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/2/2026 6:50:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/2/2026 3:46:00 PM. 50 Economy ticket for $152 per person are available. Travel duration is 6h 56m
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United Airlines5h 36m04:21 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport11:57 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from United Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/2/2026 4:21:00 PM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/2/2026 11:57:00 PM. 50 Economy ticket for $196 per person are available. Travel duration is 5h 36m
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Alaska Airlines7h 37m07:00 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport4:37 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Alaska Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/2/2026 7:00:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/2/2026 4:37:00 PM. 50 Economy ticket for $207 per person are available. Travel duration is 7h 37m
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Greyhound US35h 10m09:35 AMPhoenix, AZBus Station10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Bus Station, Phoenix, AZ (USA) at 6/2/2026 9:35:00 AM to Gateway Station, St. Louis, MO (USA) arriving at 6/3/2026 10:45:00 PM. 50 Economy ticket for $139 per person are available. Travel duration is 35h 10m
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Greyhound US30h 25m010:45 PMPhoenix, AZBus Station7:10 AMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Bus Station, Phoenix, AZ (USA) at 6/2/2026 10:45:00 PM to Gateway Station, St. Louis, MO (USA) arriving at 6/4/2026 7:10:00 AM. 50 Economy ticket for $139 per person are available. Travel duration is 30h 25m
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FlixBus56h 5m012:40 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from FlixBus goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/2/2026 12:40:00 PM to Gateway Station, St. Louis, MO (USA) arriving at 6/4/2026 10:45:00 PM. 50 Economy ticket for $142 per person are available. Travel duration is 56h 5m
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Greyhound US37h 25m07:20 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/2/2026 7:20:00 AM to Gateway Station, St. Louis, MO (USA) arriving at 6/3/2026 10:45:00 PM. 50 Economy ticket for $146 per person are available. Travel duration is 37h 25m
Cheapest Flights Tuesday
Cheapest Buses Tuesday
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Frontier Airlines6h 23m011:00 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport7:23 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/3/2026 11:00:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/3/2026 7:23:00 PM. 50 Economy ticket for $78 per person are available. Travel duration is 6h 23m
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Frontier Airlines24h 26m012:05 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport2:31 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/3/2026 12:05:00 PM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/4/2026 2:31:00 PM. 50 Economy ticket for $86 per person are available. Travel duration is 24h 26m
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United Airlines6h 56m06:50 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport3:46 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from United Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/3/2026 6:50:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/3/2026 3:46:00 PM. 50 Economy ticket for $196 per person are available. Travel duration is 6h 56m
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Alaska Airlines10h 45m06:00 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport6:45 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Alaska Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/3/2026 6:00:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/3/2026 6:45:00 PM. 50 Economy ticket for $207 per person are available. Travel duration is 10h 45m
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Alaska Airlines7h 37m07:00 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport4:37 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Alaska Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/3/2026 7:00:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/3/2026 4:37:00 PM. 50 Economy ticket for $207 per person are available. Travel duration is 7h 37m
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Greyhound US35h 10m09:35 AMPhoenix, AZBus Station10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Bus Station, Phoenix, AZ (USA) at 6/3/2026 9:35:00 AM to Gateway Station, St. Louis, MO (USA) arriving at 6/4/2026 10:45:00 PM. 50 Economy ticket for $139 per person are available. Travel duration is 35h 10m
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Greyhound US30h 25m010:45 PMPhoenix, AZBus Station7:10 AMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Bus Station, Phoenix, AZ (USA) at 6/3/2026 10:45:00 PM to Gateway Station, St. Louis, MO (USA) arriving at 6/5/2026 7:10:00 AM. 50 Economy ticket for $139 per person are available. Travel duration is 30h 25m
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Greyhound US37h 25m07:20 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/3/2026 7:20:00 AM to Gateway Station, St. Louis, MO (USA) arriving at 6/4/2026 10:45:00 PM. 50 Economy ticket for $177 per person are available. Travel duration is 37h 25m
Cheapest Flights Wednesday
Cheapest Buses Wednesday
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Frontier Airlines12h 8m05:15 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport7:23 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/4/2026 5:15:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/4/2026 7:23:00 PM. 50 Economy ticket for $120 per person are available. Travel duration is 12h 8m
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Frontier Airlines10h 31m07:40 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport8:11 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/4/2026 7:40:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/4/2026 8:11:00 PM. 50 Economy ticket for $120 per person are available. Travel duration is 10h 31m
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Allegiant Air45h 50m09:05 AMPhoenix-Mesa Gateway AirportBus Stop8:55 AMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 6/4/2026 9:05:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/6/2026 8:55:00 AM. 50 Economy ticket for $236 per person are available. Travel duration is 45h 50m
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Allegiant Air33h 1m09:10 AMPhoenix-Mesa Gateway AirportBus Stop8:11 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 6/4/2026 9:10:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/5/2026 8:11:00 PM. 50 Economy ticket for $243 per person are available. Travel duration is 33h 1m
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United Airlines6h 56m06:50 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport3:46 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from United Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/4/2026 6:50:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/4/2026 3:46:00 PM. 50 Economy ticket for $253 per person are available. Travel duration is 6h 56m
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Greyhound US35h 10m09:35 AMPhoenix, AZBus Station10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Bus Station, Phoenix, AZ (USA) at 6/4/2026 9:35:00 AM to Gateway Station, St. Louis, MO (USA) arriving at 6/5/2026 10:45:00 PM. 50 Economy ticket for $131 per person are available. Travel duration is 35h 10m
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Greyhound US30h 25m010:45 PMPhoenix, AZBus Station7:10 AMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Bus Station, Phoenix, AZ (USA) at 6/4/2026 10:45:00 PM to Gateway Station, St. Louis, MO (USA) arriving at 6/6/2026 7:10:00 AM. 50 Economy ticket for $144 per person are available. Travel duration is 30h 25m
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Greyhound US37h 25m07:20 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/4/2026 7:20:00 AM to Gateway Station, St. Louis, MO (USA) arriving at 6/5/2026 10:45:00 PM. 50 Economy ticket for $153 per person are available. Travel duration is 37h 25m
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FlixBus56h 5m012:40 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from FlixBus goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/4/2026 12:40:00 PM to Gateway Station, St. Louis, MO (USA) arriving at 6/6/2026 10:45:00 PM. 50 Economy ticket for $155 per person are available. Travel duration is 56h 5m
Cheapest Flights Thursday
Cheapest Buses Thursday
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Greyhound US35h 10m09:35 AMPhoenix, AZBus Station10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Bus Station, Phoenix, AZ (USA) at 6/5/2026 9:35:00 AM to Gateway Station, St. Louis, MO (USA) arriving at 6/6/2026 10:45:00 PM. 50 Economy ticket for $143 per person are available. Travel duration is 35h 10m
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Greyhound US30h 25m010:45 PMPhoenix, AZBus Station7:10 AMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Bus Station, Phoenix, AZ (USA) at 6/5/2026 10:45:00 PM to Gateway Station, St. Louis, MO (USA) arriving at 6/7/2026 7:10:00 AM. 50 Economy ticket for $152 per person are available. Travel duration is 30h 25m
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Greyhound US37h 25m07:20 AMPhoenix, AZ44th St/Washington10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from 44th St/Washington, Phoenix, AZ (USA) at 6/5/2026 7:20:00 AM to Gateway Station, St. Louis, MO (USA) arriving at 6/6/2026 10:45:00 PM. 50 Economy ticket for $157 per person are available. Travel duration is 37h 25m
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FlixBus56h 5m012:40 PMPhoenix, AZ44th St/Washington10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from FlixBus goes from 44th St/Washington, Phoenix, AZ (USA) at 6/5/2026 12:40:00 PM to Gateway Station, St. Louis, MO (USA) arriving at 6/7/2026 10:45:00 PM. 50 Economy ticket for $162 per person are available. Travel duration is 56h 5m
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Frontier Airlines25h 6m04:17 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport7:23 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/5/2026 4:17:00 PM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/6/2026 7:23:00 PM. 50 Economy ticket for $190 per person are available. Travel duration is 25h 6m
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Frontier Airlines22h 32m06:51 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport7:23 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/5/2026 6:51:00 PM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/6/2026 7:23:00 PM. 50 Economy ticket for $190 per person are available. Travel duration is 22h 32m
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Alaska Airlines7h 37m07:00 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport4:37 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Alaska Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/5/2026 7:00:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/5/2026 4:37:00 PM. 50 Economy ticket for $261 per person are available. Travel duration is 7h 37m
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Allegiant Air31h 37m07:57 AMPhoenix-Mesa Gateway AirportBus Stop5:34 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 6/5/2026 7:57:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/6/2026 5:34:00 PM. 50 Economy ticket for $273 per person are available. Travel duration is 31h 37m
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Allegiant Air29h 37m09:57 AMPhoenix-Mesa Gateway AirportBus Stop5:34 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 6/5/2026 9:57:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/6/2026 5:34:00 PM. 50 Economy ticket for $284 per person are available. Travel duration is 29h 37m
Cheapest Buses Friday
Cheapest Flights Friday
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Frontier Airlines16h 3m011:30 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport5:33 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/6/2026 11:30:00 PM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/7/2026 5:33:00 PM. 50 Economy ticket for $127 per person are available. Travel duration is 16h 3m
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Frontier Airlines12h 8m05:15 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport7:23 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/6/2026 5:15:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/6/2026 7:23:00 PM. 50 Economy ticket for $161 per person are available. Travel duration is 12h 8m
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Allegiant Air32h 28m07:05 AMPhoenix-Mesa Gateway AirportBus Stop5:33 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 6/6/2026 7:05:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/7/2026 5:33:00 PM. 50 Economy ticket for $227 per person are available. Travel duration is 32h 28m
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Allegiant Air47h 50m07:05 AMPhoenix-Mesa Gateway AirportBus Stop8:55 AMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 6/6/2026 7:05:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/8/2026 8:55:00 AM. 50 Economy ticket for $227 per person are available. Travel duration is 47h 50m
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United Airlines6h 56m06:50 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport3:46 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from United Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/6/2026 6:50:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/6/2026 3:46:00 PM. 50 Economy ticket for $263 per person are available. Travel duration is 6h 56m
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Greyhound US35h 10m09:35 AMPhoenix, AZBus Station10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Bus Station, Phoenix, AZ (USA) at 6/6/2026 9:35:00 AM to Gateway Station, St. Louis, MO (USA) arriving at 6/7/2026 10:45:00 PM. 50 Economy ticket for $144 per person are available. Travel duration is 35h 10m
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FlixBus56h 5m012:40 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from FlixBus goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/6/2026 12:40:00 PM to Gateway Station, St. Louis, MO (USA) arriving at 6/8/2026 10:45:00 PM. 50 Economy ticket for $160 per person are available. Travel duration is 56h 5m
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Greyhound US37h 25m07:20 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/6/2026 7:20:00 AM to Gateway Station, St. Louis, MO (USA) arriving at 6/7/2026 10:45:00 PM. 50 Economy ticket for $165 per person are available. Travel duration is 37h 25m
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Greyhound US30h 25m010:45 PMPhoenix, AZBus Station7:10 AMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Bus Station, Phoenix, AZ (USA) at 6/6/2026 10:45:00 PM to Gateway Station, St. Louis, MO (USA) arriving at 6/8/2026 7:10:00 AM. 50 Economy ticket for $167 per person are available. Travel duration is 30h 25m
Cheapest Flights Saturday
Cheapest Buses Saturday
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Frontier Airlines12h 8m05:15 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport7:23 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/7/2026 5:15:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/7/2026 7:23:00 PM. 50 Economy ticket for $126 per person are available. Travel duration is 12h 8m
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Allegiant Air46h 15m04:50 PMPhoenix-Mesa Gateway AirportBus Stop5:05 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 6/7/2026 4:50:00 PM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/9/2026 5:05:00 PM. 50 Economy ticket for $261 per person are available. Travel duration is 46h 15m
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United Airlines6h 56m06:50 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport3:46 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from United Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/7/2026 6:50:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/7/2026 3:46:00 PM. 50 Economy ticket for $283 per person are available. Travel duration is 6h 56m
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Alaska Airlines7h 37m07:00 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport4:37 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Alaska Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/7/2026 7:00:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/7/2026 4:37:00 PM. 50 Economy ticket for $321 per person are available. Travel duration is 7h 37m
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Aeroméxico36h 38m011:59 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport2:37 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Aeroméxico goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/7/2026 11:59:00 PM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/9/2026 2:37:00 PM. 50 Economy ticket for $841 per person are available. Travel duration is 36h 38m
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Greyhound US35h 10m09:35 AMPhoenix, AZBus Station10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Bus Station, Phoenix, AZ (USA) at 6/7/2026 9:35:00 AM to Gateway Station, St. Louis, MO (USA) arriving at 6/8/2026 10:45:00 PM. 50 Economy ticket for $139 per person are available. Travel duration is 35h 10m
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Greyhound US37h 25m07:20 AMPhoenix, AZ44th St/Washington10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from 44th St/Washington, Phoenix, AZ (USA) at 6/7/2026 7:20:00 AM to Gateway Station, St. Louis, MO (USA) arriving at 6/8/2026 10:45:00 PM. 50 Economy ticket for $147 per person are available. Travel duration is 37h 25m
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FlixBus56h 5m012:40 PMPhoenix, AZ44th St/Washington10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from FlixBus goes from 44th St/Washington, Phoenix, AZ (USA) at 6/7/2026 12:40:00 PM to Gateway Station, St. Louis, MO (USA) arriving at 6/9/2026 10:45:00 PM. 50 Economy ticket for $147 per person are available. Travel duration is 56h 5m
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Greyhound US30h 25m010:45 PMPhoenix, AZBus Station7:10 AMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Bus Station, Phoenix, AZ (USA) at 6/7/2026 10:45:00 PM to Gateway Station, St. Louis, MO (USA) arriving at 6/9/2026 7:10:00 AM. 50 Economy ticket for $157 per person are available. Travel duration is 30h 25m
Cheapest Flights Sunday
Cheapest Buses Sunday
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Frontier Airlines17h 3m010:27 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport5:30 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/8/2026 10:27:00 PM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/9/2026 5:30:00 PM. 50 Economy ticket for $125 per person are available. Travel duration is 17h 3m
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Allegiant Air24h 19m03:11 PMPhoenix-Mesa Gateway AirportBus Stop5:30 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 6/8/2026 3:11:00 PM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/9/2026 5:30:00 PM. 50 Economy ticket for $242 per person are available. Travel duration is 24h 19m
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United Airlines11h 51m010:06 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport11:57 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from United Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/8/2026 10:06:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/8/2026 11:57:00 PM. 50 Economy ticket for $267 per person are available. Travel duration is 11h 51m
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Alaska Airlines27h 38m06:16 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport11:54 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Alaska Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/8/2026 6:16:00 PM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/9/2026 11:54:00 PM. 50 Economy ticket for $304 per person are available. Travel duration is 27h 38m
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Aeroméxico36h 38m011:59 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport2:37 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Aeroméxico goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/8/2026 11:59:00 PM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/10/2026 2:37:00 PM. 50 Economy ticket for $741 per person are available. Travel duration is 36h 38m
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Greyhound US35h 10m09:35 AMPhoenix, AZBus Station10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Bus Station, Phoenix, AZ (USA) at 6/8/2026 9:35:00 AM to Gateway Station, St. Louis, MO (USA) arriving at 6/9/2026 10:45:00 PM. 50 Economy ticket for $127 per person are available. Travel duration is 35h 10m
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Greyhound US30h 25m010:45 PMPhoenix, AZBus Station7:10 AMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Bus Station, Phoenix, AZ (USA) at 6/8/2026 10:45:00 PM to Gateway Station, St. Louis, MO (USA) arriving at 6/10/2026 7:10:00 AM. 50 Economy ticket for $127 per person are available. Travel duration is 30h 25m
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FlixBus56h 5m012:40 PMPhoenix, AZ44th St/Washington10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from FlixBus goes from 44th St/Washington, Phoenix, AZ (USA) at 6/8/2026 12:40:00 PM to Gateway Station, St. Louis, MO (USA) arriving at 6/10/2026 10:45:00 PM. 50 Economy ticket for $138 per person are available. Travel duration is 56h 5m
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Greyhound US37h 25m07:20 AMPhoenix, AZ44th St/Washington10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from 44th St/Washington, Phoenix, AZ (USA) at 6/8/2026 7:20:00 AM to Gateway Station, St. Louis, MO (USA) arriving at 6/9/2026 10:45:00 PM. 50 Economy ticket for $140 per person are available. Travel duration is 37h 25m
Cheapest Flights Monday
Cheapest Buses Monday
What are the fastest trips from Phoenix, AZ to St. Louis, MO?
You can get to St. Louis, MO from Phoenix, AZ in just 5h 36m with a Flight from United Airlines. This is not the only option, and you can click on any of the offers below to compare it with the other modes of transportations.
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United Airlines5h 36m04:21 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport11:57 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from United Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/2/2026 4:21:00 PM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/2/2026 11:57:00 PM. 50 Economy ticket for $196 per person are available. Travel duration is 5h 36m
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United Airlines6h 56m06:50 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport3:46 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from United Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/2/2026 6:50:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/2/2026 3:46:00 PM. 50 Economy ticket for $152 per person are available. Travel duration is 6h 56m
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Alaska Airlines7h 37m07:00 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport4:37 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Alaska Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/2/2026 7:00:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/2/2026 4:37:00 PM. 50 Economy ticket for $207 per person are available. Travel duration is 7h 37m
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Frontier Airlines22h 32m06:51 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport7:23 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/2/2026 6:51:00 PM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/3/2026 7:23:00 PM. 50 Economy ticket for $85 per person are available. Travel duration is 22h 32m
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Frontier Airlines24h 54m04:29 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport7:23 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/2/2026 4:29:00 PM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/3/2026 7:23:00 PM. 50 Economy ticket for $85 per person are available. Travel duration is 24h 54m
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Greyhound US30h 25m010:45 PMPhoenix, AZBus Station7:10 AMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Bus Station, Phoenix, AZ (USA) at 6/2/2026 10:45:00 PM to Gateway Station, St. Louis, MO (USA) arriving at 6/4/2026 7:10:00 AM. 50 Economy ticket for $139 per person are available. Travel duration is 30h 25m
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Greyhound US35h 10m09:35 AMPhoenix, AZBus Station10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Bus Station, Phoenix, AZ (USA) at 6/2/2026 9:35:00 AM to Gateway Station, St. Louis, MO (USA) arriving at 6/3/2026 10:45:00 PM. 50 Economy ticket for $139 per person are available. Travel duration is 35h 10m
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Greyhound US37h 25m07:20 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/2/2026 7:20:00 AM to Gateway Station, St. Louis, MO (USA) arriving at 6/3/2026 10:45:00 PM. 50 Economy ticket for $146 per person are available. Travel duration is 37h 25m
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FlixBus56h 5m012:40 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from FlixBus goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/2/2026 12:40:00 PM to Gateway Station, St. Louis, MO (USA) arriving at 6/4/2026 10:45:00 PM. 50 Economy ticket for $142 per person are available. Travel duration is 56h 5m
Fastest Flights Tuesday
Fastest Buses Tuesday
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Frontier Airlines6h 23m011:00 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport7:23 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/3/2026 11:00:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/3/2026 7:23:00 PM. 50 Economy ticket for $78 per person are available. Travel duration is 6h 23m
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United Airlines6h 56m06:50 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport3:46 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from United Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/3/2026 6:50:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/3/2026 3:46:00 PM. 50 Economy ticket for $196 per person are available. Travel duration is 6h 56m
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Alaska Airlines7h 37m07:00 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport4:37 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Alaska Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/3/2026 7:00:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/3/2026 4:37:00 PM. 50 Economy ticket for $207 per person are available. Travel duration is 7h 37m
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Alaska Airlines10h 45m06:00 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport6:45 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Alaska Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/3/2026 6:00:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/3/2026 6:45:00 PM. 50 Economy ticket for $207 per person are available. Travel duration is 10h 45m
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Frontier Airlines24h 26m012:05 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport2:31 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/3/2026 12:05:00 PM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/4/2026 2:31:00 PM. 50 Economy ticket for $86 per person are available. Travel duration is 24h 26m
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Greyhound US30h 25m010:45 PMPhoenix, AZBus Station7:10 AMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Bus Station, Phoenix, AZ (USA) at 6/3/2026 10:45:00 PM to Gateway Station, St. Louis, MO (USA) arriving at 6/5/2026 7:10:00 AM. 50 Economy ticket for $139 per person are available. Travel duration is 30h 25m
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Greyhound US35h 10m09:35 AMPhoenix, AZBus Station10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Bus Station, Phoenix, AZ (USA) at 6/3/2026 9:35:00 AM to Gateway Station, St. Louis, MO (USA) arriving at 6/4/2026 10:45:00 PM. 50 Economy ticket for $139 per person are available. Travel duration is 35h 10m
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Greyhound US37h 25m07:20 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/3/2026 7:20:00 AM to Gateway Station, St. Louis, MO (USA) arriving at 6/4/2026 10:45:00 PM. 50 Economy ticket for $177 per person are available. Travel duration is 37h 25m
Fastest Flights Wednesday
Fastest Buses Wednesday
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United Airlines6h 56m06:50 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport3:46 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from United Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/4/2026 6:50:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/4/2026 3:46:00 PM. 50 Economy ticket for $253 per person are available. Travel duration is 6h 56m
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Frontier Airlines10h 31m07:40 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport8:11 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/4/2026 7:40:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/4/2026 8:11:00 PM. 50 Economy ticket for $120 per person are available. Travel duration is 10h 31m
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Frontier Airlines12h 8m05:15 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport7:23 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/4/2026 5:15:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/4/2026 7:23:00 PM. 50 Economy ticket for $120 per person are available. Travel duration is 12h 8m
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Allegiant Air33h 1m09:10 AMPhoenix-Mesa Gateway AirportBus Stop8:11 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 6/4/2026 9:10:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/5/2026 8:11:00 PM. 50 Economy ticket for $243 per person are available. Travel duration is 33h 1m
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Allegiant Air45h 50m09:05 AMPhoenix-Mesa Gateway AirportBus Stop8:55 AMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 6/4/2026 9:05:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/6/2026 8:55:00 AM. 50 Economy ticket for $236 per person are available. Travel duration is 45h 50m
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Greyhound US30h 25m010:45 PMPhoenix, AZBus Station7:10 AMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Bus Station, Phoenix, AZ (USA) at 6/4/2026 10:45:00 PM to Gateway Station, St. Louis, MO (USA) arriving at 6/6/2026 7:10:00 AM. 50 Economy ticket for $144 per person are available. Travel duration is 30h 25m
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Greyhound US35h 10m09:35 AMPhoenix, AZBus Station10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Bus Station, Phoenix, AZ (USA) at 6/4/2026 9:35:00 AM to Gateway Station, St. Louis, MO (USA) arriving at 6/5/2026 10:45:00 PM. 50 Economy ticket for $131 per person are available. Travel duration is 35h 10m
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Greyhound US37h 25m07:20 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/4/2026 7:20:00 AM to Gateway Station, St. Louis, MO (USA) arriving at 6/5/2026 10:45:00 PM. 50 Economy ticket for $153 per person are available. Travel duration is 37h 25m
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FlixBus56h 5m012:40 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from FlixBus goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/4/2026 12:40:00 PM to Gateway Station, St. Louis, MO (USA) arriving at 6/6/2026 10:45:00 PM. 50 Economy ticket for $155 per person are available. Travel duration is 56h 5m
Fastest Flights Thursday
Fastest Buses Thursday
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Alaska Airlines7h 37m07:00 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport4:37 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Alaska Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/5/2026 7:00:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/5/2026 4:37:00 PM. 50 Economy ticket for $261 per person are available. Travel duration is 7h 37m
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Frontier Airlines22h 32m06:51 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport7:23 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/5/2026 6:51:00 PM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/6/2026 7:23:00 PM. 50 Economy ticket for $190 per person are available. Travel duration is 22h 32m
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Frontier Airlines25h 6m04:17 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport7:23 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/5/2026 4:17:00 PM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/6/2026 7:23:00 PM. 50 Economy ticket for $190 per person are available. Travel duration is 25h 6m
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Allegiant Air29h 37m09:57 AMPhoenix-Mesa Gateway AirportBus Stop5:34 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 6/5/2026 9:57:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/6/2026 5:34:00 PM. 50 Economy ticket for $284 per person are available. Travel duration is 29h 37m
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Allegiant Air31h 37m07:57 AMPhoenix-Mesa Gateway AirportBus Stop5:34 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 6/5/2026 7:57:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/6/2026 5:34:00 PM. 50 Economy ticket for $273 per person are available. Travel duration is 31h 37m
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Greyhound US30h 25m010:45 PMPhoenix, AZBus Station7:10 AMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Bus Station, Phoenix, AZ (USA) at 6/5/2026 10:45:00 PM to Gateway Station, St. Louis, MO (USA) arriving at 6/7/2026 7:10:00 AM. 50 Economy ticket for $152 per person are available. Travel duration is 30h 25m
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Greyhound US35h 10m09:35 AMPhoenix, AZBus Station10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Bus Station, Phoenix, AZ (USA) at 6/5/2026 9:35:00 AM to Gateway Station, St. Louis, MO (USA) arriving at 6/6/2026 10:45:00 PM. 50 Economy ticket for $143 per person are available. Travel duration is 35h 10m
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Greyhound US37h 25m07:20 AMPhoenix, AZ44th St/Washington10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from 44th St/Washington, Phoenix, AZ (USA) at 6/5/2026 7:20:00 AM to Gateway Station, St. Louis, MO (USA) arriving at 6/6/2026 10:45:00 PM. 50 Economy ticket for $157 per person are available. Travel duration is 37h 25m
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FlixBus56h 5m012:40 PMPhoenix, AZ44th St/Washington10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from FlixBus goes from 44th St/Washington, Phoenix, AZ (USA) at 6/5/2026 12:40:00 PM to Gateway Station, St. Louis, MO (USA) arriving at 6/7/2026 10:45:00 PM. 50 Economy ticket for $162 per person are available. Travel duration is 56h 5m
Fastest Flights Friday
Fastest Buses Friday
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United Airlines6h 56m06:50 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport3:46 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from United Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/6/2026 6:50:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/6/2026 3:46:00 PM. 50 Economy ticket for $263 per person are available. Travel duration is 6h 56m
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Frontier Airlines12h 8m05:15 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport7:23 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/6/2026 5:15:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/6/2026 7:23:00 PM. 50 Economy ticket for $161 per person are available. Travel duration is 12h 8m
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Frontier Airlines16h 3m011:30 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport5:33 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/6/2026 11:30:00 PM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/7/2026 5:33:00 PM. 50 Economy ticket for $127 per person are available. Travel duration is 16h 3m
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Allegiant Air32h 28m07:05 AMPhoenix-Mesa Gateway AirportBus Stop5:33 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 6/6/2026 7:05:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/7/2026 5:33:00 PM. 50 Economy ticket for $227 per person are available. Travel duration is 32h 28m
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Allegiant Air47h 50m07:05 AMPhoenix-Mesa Gateway AirportBus Stop8:55 AMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 6/6/2026 7:05:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/8/2026 8:55:00 AM. 50 Economy ticket for $227 per person are available. Travel duration is 47h 50m
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Greyhound US30h 25m010:45 PMPhoenix, AZBus Station7:10 AMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Bus Station, Phoenix, AZ (USA) at 6/6/2026 10:45:00 PM to Gateway Station, St. Louis, MO (USA) arriving at 6/8/2026 7:10:00 AM. 50 Economy ticket for $167 per person are available. Travel duration is 30h 25m
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Greyhound US35h 10m09:35 AMPhoenix, AZBus Station10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Bus Station, Phoenix, AZ (USA) at 6/6/2026 9:35:00 AM to Gateway Station, St. Louis, MO (USA) arriving at 6/7/2026 10:45:00 PM. 50 Economy ticket for $144 per person are available. Travel duration is 35h 10m
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Greyhound US37h 25m07:20 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/6/2026 7:20:00 AM to Gateway Station, St. Louis, MO (USA) arriving at 6/7/2026 10:45:00 PM. 50 Economy ticket for $165 per person are available. Travel duration is 37h 25m
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FlixBus56h 5m012:40 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from FlixBus goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/6/2026 12:40:00 PM to Gateway Station, St. Louis, MO (USA) arriving at 6/8/2026 10:45:00 PM. 50 Economy ticket for $160 per person are available. Travel duration is 56h 5m
Fastest Flights Saturday
Fastest Buses Saturday
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United Airlines6h 56m06:50 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport3:46 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from United Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/7/2026 6:50:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/7/2026 3:46:00 PM. 50 Economy ticket for $283 per person are available. Travel duration is 6h 56m
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Alaska Airlines7h 37m07:00 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport4:37 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Alaska Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/7/2026 7:00:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/7/2026 4:37:00 PM. 50 Economy ticket for $321 per person are available. Travel duration is 7h 37m
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Frontier Airlines12h 8m05:15 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport7:23 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/7/2026 5:15:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/7/2026 7:23:00 PM. 50 Economy ticket for $126 per person are available. Travel duration is 12h 8m
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Aeroméxico36h 38m011:59 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport2:37 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Aeroméxico goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/7/2026 11:59:00 PM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/9/2026 2:37:00 PM. 50 Economy ticket for $841 per person are available. Travel duration is 36h 38m
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Allegiant Air46h 15m04:50 PMPhoenix-Mesa Gateway AirportBus Stop5:05 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 6/7/2026 4:50:00 PM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/9/2026 5:05:00 PM. 50 Economy ticket for $261 per person are available. Travel duration is 46h 15m
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Greyhound US30h 25m010:45 PMPhoenix, AZBus Station7:10 AMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Bus Station, Phoenix, AZ (USA) at 6/7/2026 10:45:00 PM to Gateway Station, St. Louis, MO (USA) arriving at 6/9/2026 7:10:00 AM. 50 Economy ticket for $157 per person are available. Travel duration is 30h 25m
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Greyhound US35h 10m09:35 AMPhoenix, AZBus Station10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Bus Station, Phoenix, AZ (USA) at 6/7/2026 9:35:00 AM to Gateway Station, St. Louis, MO (USA) arriving at 6/8/2026 10:45:00 PM. 50 Economy ticket for $139 per person are available. Travel duration is 35h 10m
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Greyhound US37h 25m07:20 AMPhoenix, AZ44th St/Washington10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from 44th St/Washington, Phoenix, AZ (USA) at 6/7/2026 7:20:00 AM to Gateway Station, St. Louis, MO (USA) arriving at 6/8/2026 10:45:00 PM. 50 Economy ticket for $147 per person are available. Travel duration is 37h 25m
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FlixBus56h 5m012:40 PMPhoenix, AZ44th St/Washington10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from FlixBus goes from 44th St/Washington, Phoenix, AZ (USA) at 6/7/2026 12:40:00 PM to Gateway Station, St. Louis, MO (USA) arriving at 6/9/2026 10:45:00 PM. 50 Economy ticket for $147 per person are available. Travel duration is 56h 5m
Fastest Flights Sunday
Fastest Buses Sunday
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United Airlines11h 51m010:06 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport11:57 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from United Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/8/2026 10:06:00 AM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/8/2026 11:57:00 PM. 50 Economy ticket for $267 per person are available. Travel duration is 11h 51m
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Frontier Airlines17h 3m010:27 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport5:30 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Frontier Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/8/2026 10:27:00 PM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/9/2026 5:30:00 PM. 50 Economy ticket for $125 per person are available. Travel duration is 17h 3m
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Allegiant Air24h 19m03:11 PMPhoenix-Mesa Gateway AirportBus Stop5:30 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Allegiant Air goes from Bus Stop, Phoenix-Mesa Gateway Airport (USA) at 6/8/2026 3:11:00 PM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/9/2026 5:30:00 PM. 50 Economy ticket for $242 per person are available. Travel duration is 24h 19m
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Alaska Airlines27h 38m06:16 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport11:54 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Alaska Airlines goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/8/2026 6:16:00 PM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/9/2026 11:54:00 PM. 50 Economy ticket for $304 per person are available. Travel duration is 27h 38m
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Aeroméxico36h 38m011:59 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport2:37 PMSt. Louis Lambert AirportSt. Louis Lambert Airport0EconomyA Flight from Aeroméxico goes from Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) at 6/8/2026 11:59:00 PM to St. Louis Lambert Airport, St. Louis Lambert Airport (USA) arriving at 6/10/2026 2:37:00 PM. 50 Economy ticket for $741 per person are available. Travel duration is 36h 38m
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Greyhound US30h 25m010:45 PMPhoenix, AZBus Station7:10 AMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Bus Station, Phoenix, AZ (USA) at 6/8/2026 10:45:00 PM to Gateway Station, St. Louis, MO (USA) arriving at 6/10/2026 7:10:00 AM. 50 Economy ticket for $127 per person are available. Travel duration is 30h 25m
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Greyhound US35h 10m09:35 AMPhoenix, AZBus Station10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from Bus Station, Phoenix, AZ (USA) at 6/8/2026 9:35:00 AM to Gateway Station, St. Louis, MO (USA) arriving at 6/9/2026 10:45:00 PM. 50 Economy ticket for $127 per person are available. Travel duration is 35h 10m
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Greyhound US37h 25m07:20 AMPhoenix, AZ44th St/Washington10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from Greyhound US goes from 44th St/Washington, Phoenix, AZ (USA) at 6/8/2026 7:20:00 AM to Gateway Station, St. Louis, MO (USA) arriving at 6/9/2026 10:45:00 PM. 50 Economy ticket for $140 per person are available. Travel duration is 37h 25m
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FlixBus56h 5m012:40 PMPhoenix, AZ44th St/Washington10:45 PMSt. Louis, MOGateway Station0EconomyA Bus from FlixBus goes from 44th St/Washington, Phoenix, AZ (USA) at 6/8/2026 12:40:00 PM to Gateway Station, St. Louis, MO (USA) arriving at 6/10/2026 10:45:00 PM. 50 Economy ticket for $138 per person are available. Travel duration is 56h 5m
Fastest Flights Monday
Fastest Buses Monday
Here you will find all operators and timetables for a
Bus from Phoenix, AZ to St. Louis, MO
What are the most popular stations in Phoenix, AZ and St. Louis, MO?
In Phoenix, AZ, you will usually depart from Washington St & 4th Av Bus Stop, 7th St & Roosevelt St Bus Stop or 24th St & Jefferson St Station, while in St. Louis, MO you will be arriving at Skinker Boulevard, Lindbergh @ Hackberry NB Bus Stop or Gateway Station, but there are many more stops to explore in both locations.
How do I decide? Some tips and tricks from our experience
Are you having trouble deciding on how to get to St. Louis, MO from Phoenix, AZ? With 8 connections between 2 Flight and Bus operators, it can be difficult to find the one ride that will make you happy. But we have some tips that can help you make the best informed decision. First of all, the best trip is always the one that meets all your needs, so make a list of all the things that you want from this journey and look for something that will satisfy all of them. Here we will go through some of the factors mostly commonly taken into consideration.
Look for the lowest price
Ticket price is usually the main concern: even if you can afford to pay more, why do it if there are cheaper options? Saving on the trip means that you can spend more on the vacation itself! Between Phoenix, AZ and St. Louis, MO, you can pay as low as $78 with a Flight from Frontier Airlines.Travel duration
Time is also an important factor. An earlier departure may allow you to see a beautiful sunset or relax before an important event. And remember, time is money, so paying more for a shorter trip may be well worth it. For longer distances, flights are without doubt the best options, but be mindful of airport times and possible delays: a high-speed train may end up cheaper and faster! Here the quicker option is definitely the Flight from United Airlines: you will get to St. Louis, MO in just 5h 36m.Comfort makes all the difference
You should always take into account what your personal travelling preferences are. Is one hand luggage enough, or are you trasporting more? Would you like to have a snack during the journey? Can you relax in a busy compartment, or do you need space for yourself? Even among the same mode of transportation, different companies will offer you varying levels of comfort and amenities. The main operators connecting Phoenix, AZ and St. Louis, MO are Greyhound US, Frontier Airlines and Allegiant Air, but be sure to check what they have to offer!Save money with deals, and always compare
One last tip? Even if you live in Phoenix, AZ and St. Louis, MO is your only destination, it may be wise to check the offers from and to nearby cities or, if you are flyng, nearby airports. Check the trips from Phoenix Sky Harbor Airport or to Sauget, IL, and look at flights from Phoenix-Deer Valley Airport, and landing at St. Louis Lambert Airport. Comparing different routes may allow you to find deals or promotions you were not aware of. Consider also signing up to CheckMyBus to see even more exclusive promotions!Which companies offer a trip from Phoenix, AZ to St. Louis, MO?
The most popular companies between Phoenix, AZ and St. Louis, MO, are Greyhound US, Frontier Airlines and Allegiant Air. Be sure to check their seat class offers and the amenities that they provide.
Bus companies: Greyhound US and FlixBus
Airlines: Frontier Airlines, Allegiant Air, United Airlines and 2 more.
All you need to know when you travel from Phoenix, AZ to St. Louis, MO
Check all information on comfort and services on all modes of transports from Phoenix, AZ to St. Louis, MO. See which seat classes are available, and what amenities are other advantages offered by the operators on your journey.
FAQs about the trip from Phoenix, AZ to St. Louis, MO
How can I reach St. Louis, MO from Phoenix, AZ?
Every day, there are on average 8 connections between Flight and Bus, with which you can get to St. Louis, MO from Phoenix, AZ.
How far is St. Louis, MO from Phoenix, AZ?
The distance between Phoenix, AZ and St. Louis, MO is 1,270.1 miles.
What is the most ecofriendly mode of transport between Phoenix, AZ and St. Louis, MO?
Trains and buses are by far the greenest options, with trains surpassing buses on longer routes. Planes will always be the worst polluters, especially in shorter flights, were the emissions from the takeoff and landing are less offset by the distance.
On this particular route, a bus will emit, per person, a total of 55 kgs of CO2, a train 72 kgs, a car 347 kgs, and a flight 503 kgs.
What is the cheapest mode of transport from Phoenix, AZ to St. Louis, MO?
You can get to St. Louis, MO with just $78 by taking a Flight from Frontier Airlines.
What is the fastest way to get from Phoenix, AZ to St. Louis, MO?
While a plane is travelling fastest boarding and transfer to airport consumes a lot of time. Usually, high speed trains are better than flights if pure train travel time is below 4 hours. For this particular route, you can get to St. Louis, MO in just 5h 36m with a Flight from United Airlines.
More routes to Phoenix, AZ and to St. Louis, MO
Looking for more options? Here you can see the most popular routes to Phoenix, AZ and to St. Louis, MO. Simply click on a connection, and you’ll find all the details about the route!
