What is the best way to travel from St. Louis, MO to Phoenix, AZ?
Looking for a trip? Compare all the available Buses and Flights for the journey to Phoenix, AZ from St. Louis, MO. 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 Phoenix, AZ from St. Louis, MO?
You can get to Phoenix, AZ with just $70 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 Airlines3h 31m012:07 PMSt. Louis Lambert AirportSt. Louis Lambert Airport2:38 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/5/2025 12:07:00 PM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/5/2025 2:38:00 PM. 50 Economy ticket for $122 per person are available. Travel duration is 3h 31m
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Frontier Airlines6h 15m01:16 PMSt. Louis Lambert AirportSt. Louis Lambert Airport6:31 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/5/2025 1:16:00 PM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/5/2025 6:31:00 PM. 50 Economy ticket for $174 per person are available. Travel duration is 6h 15m
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United Airlines6h 55m06:15 AMSt. Louis Lambert AirportSt. Louis Lambert Airport12:10 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from United Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/5/2025 6:15:00 AM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/5/2025 12:10:00 PM. 50 Economy ticket for $554 per person are available. Travel duration is 6h 55m
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United Airlines7h 15m08:00 AMSt. Louis Lambert AirportSt. Louis Lambert Airport2:15 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from United Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/5/2025 8:00:00 AM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/5/2025 2:15:00 PM. 50 Economy ticket for $554 per person are available. Travel duration is 7h 15m
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Alaska Airlines13h 14m07:00 AMSt. Louis Lambert AirportSt. Louis Lambert Airport7:14 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Alaska Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/5/2025 7:00:00 AM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/5/2025 7:14:00 PM. 50 Economy ticket for $592 per person are available. Travel duration is 13h 14m
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Greyhound US30h 50m01:20 AMSt. Louis, MOGateway Station7:10 AMPhoenix, AZBus Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 12/5/2025 1:20:00 AM to Bus Station, Phoenix, AZ (USA) arriving at 12/6/2025 7:10:00 AM. 50 Economy ticket for $127 per person are available. Travel duration is 30h 50m
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Greyhound US39h 40m04:30 PMSt. Louis, MOGateway Station7:10 AMPhoenix, AZBus Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 12/5/2025 4:30:00 PM to Bus Station, Phoenix, AZ (USA) arriving at 12/7/2025 7:10:00 AM. 50 Economy ticket for $182 per person are available. Travel duration is 39h 40m
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FlixBus47h 35m04:00 PMSt. Louis, MOGateway Station2:35 PMPhoenix, AZBus Station0EconomyA Bus from FlixBus goes from Gateway Station, St. Louis, MO (USA) at 12/5/2025 4:00:00 PM to Bus Station, Phoenix, AZ (USA) arriving at 12/7/2025 2:35:00 PM. 50 Economy ticket for $246 per person are available. Travel duration is 47h 35m
Cheapest Flights Friday
Cheapest Buses Friday
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FlixBus47h 35m04:00 PMSt. Louis, MOGateway Station2:35 PMPhoenix, AZBus Station0EconomyA Bus from FlixBus goes from Gateway Station, St. Louis, MO (USA) at 12/6/2025 4:00:00 PM to Bus Station, Phoenix, AZ (USA) arriving at 12/8/2025 2:35:00 PM. 50 Economy ticket for $165 per person are available. Travel duration is 47h 35m
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Greyhound US30h 50m01:20 AMSt. Louis, MOGateway Station7:10 AMPhoenix, AZBus Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 12/6/2025 1:20:00 AM to Bus Station, Phoenix, AZ (USA) arriving at 12/7/2025 7:10:00 AM. 50 Economy ticket for $166 per person are available. Travel duration is 30h 50m
Cheapest Buses Saturday
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Frontier Airlines22h 17m09:14 PMSt. Louis Lambert AirportSt. Louis Lambert Airport6:31 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/7/2025 9:14:00 PM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/8/2025 6:31:00 PM. 50 Economy ticket for $70 per person are available. Travel duration is 22h 17m
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Frontier Airlines12h 34m09:14 PMSt. Louis Lambert AirportSt. Louis Lambert Airport8:48 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/7/2025 9:14:00 PM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/8/2025 8:48:00 AM. 50 Economy ticket for $103 per person are available. Travel duration is 12h 34m
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Alaska Airlines14h 17m07:00 AMSt. Louis Lambert AirportSt. Louis Lambert Airport8:17 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Alaska Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/7/2025 7:00:00 AM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/7/2025 8:17:00 PM. 50 Economy ticket for $519 per person are available. Travel duration is 14h 17m
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United Airlines6h 55m06:15 AMSt. Louis Lambert AirportSt. Louis Lambert Airport12:10 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from United Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/7/2025 6:15:00 AM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/7/2025 12:10:00 PM. 50 Economy ticket for $554 per person are available. Travel duration is 6h 55m
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United Airlines7h 2m06:30 AMSt. Louis Lambert AirportSt. Louis Lambert Airport12:32 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from United Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/7/2025 6:30:00 AM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/7/2025 12:32:00 PM. 50 Economy ticket for $554 per person are available. Travel duration is 7h 2m
Cheapest Flights Sunday
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Frontier Airlines9h 10m01:16 PMSt. Louis Lambert AirportSt. Louis Lambert Airport9:26 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/8/2025 1:16:00 PM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/8/2025 9:26:00 PM. 50 Economy ticket for $103 per person are available. Travel duration is 9h 10m
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Frontier Airlines6h 1m07:43 PMSt. Louis Lambert AirportSt. Louis Lambert Airport12:44 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/8/2025 7:43:00 PM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/9/2025 12:44:00 AM. 50 Economy ticket for $109 per person are available. Travel duration is 6h 1m
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Alaska Airlines13h 14m07:00 AMSt. Louis Lambert AirportSt. Louis Lambert Airport7:14 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Alaska Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/8/2025 7:00:00 AM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/8/2025 7:14:00 PM. 50 Economy ticket for $496 per person are available. Travel duration is 13h 14m
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United Airlines6h 55m06:15 AMSt. Louis Lambert AirportSt. Louis Lambert Airport12:10 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from United Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/8/2025 6:15:00 AM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/8/2025 12:10:00 PM. 50 Economy ticket for $554 per person are available. Travel duration is 6h 55m
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United Airlines7h 2m06:30 AMSt. Louis Lambert AirportSt. Louis Lambert Airport12:32 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from United Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/8/2025 6:30:00 AM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/8/2025 12:32:00 PM. 50 Economy ticket for $554 per person are available. Travel duration is 7h 2m
Cheapest Flights Monday
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Frontier Airlines13h 23m07:43 PMSt. Louis Lambert AirportSt. Louis Lambert Airport8:06 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/10/2025 7:43:00 PM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/11/2025 8:06:00 AM. 50 Economy ticket for $87 per person are available. Travel duration is 13h 23m
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Frontier Airlines28h 1m03:30 PMSt. Louis Lambert AirportSt. Louis Lambert Airport6:31 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/10/2025 3:30:00 PM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/11/2025 6:31:00 PM. 50 Economy ticket for $132 per person are available. Travel duration is 28h 1m
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Alaska Airlines13h 14m07:00 AMSt. Louis Lambert AirportSt. Louis Lambert Airport7:14 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Alaska Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/10/2025 7:00:00 AM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/10/2025 7:14:00 PM. 50 Economy ticket for $453 per person are available. Travel duration is 13h 14m
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United Airlines8h 55m06:15 AMSt. Louis Lambert AirportSt. Louis Lambert Airport2:10 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from United Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/10/2025 6:15:00 AM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/10/2025 2:10:00 PM. 50 Economy ticket for $520 per person are available. Travel duration is 8h 55m
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United Airlines7h 26m09:00 AMSt. Louis Lambert AirportSt. Louis Lambert Airport3:26 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from United Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/10/2025 9:00:00 AM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/10/2025 3:26:00 PM. 50 Economy ticket for $520 per person are available. Travel duration is 7h 26m
Cheapest Flights Wednesday
What are the fastest trips from St. Louis, MO to Phoenix, AZ?
You can get to Phoenix, AZ from St. Louis, MO in just 3h 31m with a Flight from Frontier 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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Frontier Airlines3h 31m012:07 PMSt. Louis Lambert AirportSt. Louis Lambert Airport2:38 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/5/2025 12:07:00 PM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/5/2025 2:38:00 PM. 50 Economy ticket for $122 per person are available. Travel duration is 3h 31m
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Frontier Airlines6h 15m01:16 PMSt. Louis Lambert AirportSt. Louis Lambert Airport6:31 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/5/2025 1:16:00 PM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/5/2025 6:31:00 PM. 50 Economy ticket for $174 per person are available. Travel duration is 6h 15m
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United Airlines6h 55m06:15 AMSt. Louis Lambert AirportSt. Louis Lambert Airport12:10 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from United Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/5/2025 6:15:00 AM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/5/2025 12:10:00 PM. 50 Economy ticket for $554 per person are available. Travel duration is 6h 55m
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United Airlines7h 15m08:00 AMSt. Louis Lambert AirportSt. Louis Lambert Airport2:15 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from United Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/5/2025 8:00:00 AM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/5/2025 2:15:00 PM. 50 Economy ticket for $554 per person are available. Travel duration is 7h 15m
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Alaska Airlines13h 14m07:00 AMSt. Louis Lambert AirportSt. Louis Lambert Airport7:14 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Alaska Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/5/2025 7:00:00 AM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/5/2025 7:14:00 PM. 50 Economy ticket for $592 per person are available. Travel duration is 13h 14m
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Greyhound US30h 50m01:20 AMSt. Louis, MOGateway Station7:10 AMPhoenix, AZBus Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 12/5/2025 1:20:00 AM to Bus Station, Phoenix, AZ (USA) arriving at 12/6/2025 7:10:00 AM. 50 Economy ticket for $127 per person are available. Travel duration is 30h 50m
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Greyhound US39h 40m04:30 PMSt. Louis, MOGateway Station7:10 AMPhoenix, AZBus Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 12/5/2025 4:30:00 PM to Bus Station, Phoenix, AZ (USA) arriving at 12/7/2025 7:10:00 AM. 50 Economy ticket for $182 per person are available. Travel duration is 39h 40m
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FlixBus47h 35m04:00 PMSt. Louis, MOGateway Station2:35 PMPhoenix, AZBus Station0EconomyA Bus from FlixBus goes from Gateway Station, St. Louis, MO (USA) at 12/5/2025 4:00:00 PM to Bus Station, Phoenix, AZ (USA) arriving at 12/7/2025 2:35:00 PM. 50 Economy ticket for $246 per person are available. Travel duration is 47h 35m
Fastest Flights Friday
Fastest Buses Friday
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Greyhound US30h 50m01:20 AMSt. Louis, MOGateway Station7:10 AMPhoenix, AZBus Station0EconomyA Bus from Greyhound US goes from Gateway Station, St. Louis, MO (USA) at 12/6/2025 1:20:00 AM to Bus Station, Phoenix, AZ (USA) arriving at 12/7/2025 7:10:00 AM. 50 Economy ticket for $166 per person are available. Travel duration is 30h 50m
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FlixBus47h 35m04:00 PMSt. Louis, MOGateway Station2:35 PMPhoenix, AZBus Station0EconomyA Bus from FlixBus goes from Gateway Station, St. Louis, MO (USA) at 12/6/2025 4:00:00 PM to Bus Station, Phoenix, AZ (USA) arriving at 12/8/2025 2:35:00 PM. 50 Economy ticket for $165 per person are available. Travel duration is 47h 35m
Fastest Buses Saturday
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United Airlines6h 55m06:15 AMSt. Louis Lambert AirportSt. Louis Lambert Airport12:10 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from United Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/7/2025 6:15:00 AM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/7/2025 12:10:00 PM. 50 Economy ticket for $554 per person are available. Travel duration is 6h 55m
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United Airlines7h 2m06:30 AMSt. Louis Lambert AirportSt. Louis Lambert Airport12:32 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from United Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/7/2025 6:30:00 AM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/7/2025 12:32:00 PM. 50 Economy ticket for $554 per person are available. Travel duration is 7h 2m
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Frontier Airlines12h 34m09:14 PMSt. Louis Lambert AirportSt. Louis Lambert Airport8:48 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/7/2025 9:14:00 PM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/8/2025 8:48:00 AM. 50 Economy ticket for $103 per person are available. Travel duration is 12h 34m
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Alaska Airlines14h 17m07:00 AMSt. Louis Lambert AirportSt. Louis Lambert Airport8:17 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Alaska Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/7/2025 7:00:00 AM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/7/2025 8:17:00 PM. 50 Economy ticket for $519 per person are available. Travel duration is 14h 17m
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Frontier Airlines22h 17m09:14 PMSt. Louis Lambert AirportSt. Louis Lambert Airport6:31 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/7/2025 9:14:00 PM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/8/2025 6:31:00 PM. 50 Economy ticket for $70 per person are available. Travel duration is 22h 17m
Fastest Flights Sunday
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Frontier Airlines6h 1m07:43 PMSt. Louis Lambert AirportSt. Louis Lambert Airport12:44 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/8/2025 7:43:00 PM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/9/2025 12:44:00 AM. 50 Economy ticket for $109 per person are available. Travel duration is 6h 1m
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United Airlines6h 55m06:15 AMSt. Louis Lambert AirportSt. Louis Lambert Airport12:10 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from United Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/8/2025 6:15:00 AM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/8/2025 12:10:00 PM. 50 Economy ticket for $554 per person are available. Travel duration is 6h 55m
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United Airlines7h 2m06:30 AMSt. Louis Lambert AirportSt. Louis Lambert Airport12:32 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from United Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/8/2025 6:30:00 AM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/8/2025 12:32:00 PM. 50 Economy ticket for $554 per person are available. Travel duration is 7h 2m
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Frontier Airlines9h 10m01:16 PMSt. Louis Lambert AirportSt. Louis Lambert Airport9:26 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/8/2025 1:16:00 PM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/8/2025 9:26:00 PM. 50 Economy ticket for $103 per person are available. Travel duration is 9h 10m
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Alaska Airlines13h 14m07:00 AMSt. Louis Lambert AirportSt. Louis Lambert Airport7:14 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Alaska Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/8/2025 7:00:00 AM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/8/2025 7:14:00 PM. 50 Economy ticket for $496 per person are available. Travel duration is 13h 14m
Fastest Flights Monday
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United Airlines7h 26m09:00 AMSt. Louis Lambert AirportSt. Louis Lambert Airport3:26 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from United Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/10/2025 9:00:00 AM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/10/2025 3:26:00 PM. 50 Economy ticket for $520 per person are available. Travel duration is 7h 26m
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United Airlines8h 55m06:15 AMSt. Louis Lambert AirportSt. Louis Lambert Airport2:10 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from United Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/10/2025 6:15:00 AM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/10/2025 2:10:00 PM. 50 Economy ticket for $520 per person are available. Travel duration is 8h 55m
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Alaska Airlines13h 14m07:00 AMSt. Louis Lambert AirportSt. Louis Lambert Airport7:14 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Alaska Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/10/2025 7:00:00 AM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/10/2025 7:14:00 PM. 50 Economy ticket for $453 per person are available. Travel duration is 13h 14m
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Frontier Airlines13h 23m07:43 PMSt. Louis Lambert AirportSt. Louis Lambert Airport8:06 AMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/10/2025 7:43:00 PM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/11/2025 8:06:00 AM. 50 Economy ticket for $87 per person are available. Travel duration is 13h 23m
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Frontier Airlines28h 1m03:30 PMSt. Louis Lambert AirportSt. Louis Lambert Airport6:31 PMPhoenix Sky Harbor AirportPhoenix Sky Harbor Airport0EconomyA Flight from Frontier Airlines goes from St. Louis Lambert Airport, St. Louis Lambert Airport (USA) at 12/10/2025 3:30:00 PM to Phoenix Sky Harbor Airport, Phoenix Sky Harbor Airport (USA) arriving at 12/11/2025 6:31:00 PM. 50 Economy ticket for $132 per person are available. Travel duration is 28h 1m
Fastest Flights Wednesday
Here you will find all operators and timetables for a
Bus from St. Louis, MO to Phoenix, AZ
What are the most popular stations in St. Louis, MO and Phoenix, AZ?
In St. Louis, MO, you will usually depart from Gateway Station, Lindbergh @ Hackberry NB Bus Stop or Skinker Boulevard, while in Phoenix, AZ you will be arriving at Washington St & 4th Av Bus Stop, 7th St & Roosevelt St Bus Stop or 24th St & Jefferson St 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 Phoenix, AZ from St. Louis, MO? With 5 connections between 2 Bus and Flight 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 St. Louis, MO and Phoenix, AZ, you can pay as low as $70 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 Frontier Airlines: you will get to Phoenix, AZ in just 3h 31m.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 St. Louis, MO and Phoenix, AZ are Frontier Airlines, United Airlines and Greyhound US, 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 St. Louis, MO and Phoenix, AZ 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 Sauget, IL or to Phoenix Sky Harbor Airport, and look at flights from St. Louis Lambert Airport, and landing at Phoenix Sky Harbor 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 St. Louis, MO to Phoenix, AZ?
The most popular companies between St. Louis, MO and Phoenix, AZ, are Frontier Airlines, United Airlines and Greyhound US. Be sure to check their seat class offers and the amenities that they provide.
Bus companies: Greyhound US and FlixBus
Airlines: Frontier Airlines, United Airlines and Alaska Airlines
All you need to know when you travel from St. Louis, MO to Phoenix, AZ
Check all information on comfort and services on all modes of transports from St. Louis, MO to Phoenix, AZ. See which seat classes are available, and what amenities are other advantages offered by the operators on your journey.
FAQs about the trip from St. Louis, MO to Phoenix, AZ
How can I reach Phoenix, AZ from St. Louis, MO?
Every day, there are on average 5 connections between Bus and Flight, with which you can get to Phoenix, AZ from St. Louis, MO.
How far is Phoenix, AZ from St. Louis, MO?
The distance between St. Louis, MO and Phoenix, AZ is 1,270.1 miles.
What is the most ecofriendly mode of transport between St. Louis, MO and Phoenix, AZ?
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 St. Louis, MO to Phoenix, AZ?
You can get to Phoenix, AZ with just $70 by taking a Flight from Frontier Airlines.
What is the fastest way to get from St. Louis, MO to Phoenix, AZ?
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 Phoenix, AZ in just 3h 31m with a Flight from Frontier Airlines.
More routes to St. Louis, MO and to Phoenix, AZ
Looking for more options? Here you can see the most popular routes to St. Louis, MO and to Phoenix, AZ. Simply click on a connection, and you’ll find all the details about the route!
- Trips to St. Louis, MO
- Atlanta, GA to St. Louis, MO
- Ciudad Juárez to St. Louis, MO
- Dallas to St. Louis, MO
- Mexico City to St. Louis, MO
- Monterrey, NL to St. Louis, MO
- Trips to Phoenix, AZ
- Aguascalientes to Phoenix, AZ
- Brownsville, TX to Phoenix, AZ
- Chihuahua to Phoenix, AZ
- Ciudad Juárez to Phoenix, AZ
- Ciudad Obregón to Phoenix, AZ
- Durango, DG to Phoenix, AZ
- El Paso, TX to Phoenix, AZ
- Guadalajara, JC to Phoenix, AZ
- Hermosillo to Phoenix, AZ
- Las Vegas to Phoenix, AZ
- Los Angeles to Phoenix, AZ
- Los Mochis to Phoenix, AZ
- Mexico City to Phoenix, AZ
- Salt Lake City, UT to Phoenix, AZ
- San Diego to Phoenix, AZ
- San Francisco to Phoenix, AZ
- San Jose, CA to Phoenix, AZ
- Tijuana Airport to Phoenix, AZ
- Tijuana, BC to Phoenix, AZ
- Torreón, CO to Phoenix, AZ
- Victorville, CA to Phoenix, AZ

