Bus Ontario, CA to San Diego - Compare all Companies

Compare all timetables for the bus from Ontario, CA to San Diego

Here is a selection of the cheapest bus trips from the schedule from Ontario, CA to San Diego from various bus operators like Greyhound US, FlixBus or Limousine Express for the next days.

today

$26

tomorrow

$28

Thursday

$33

Friday

$36

Saturday

$29

Sunday

$37

Monday

Cheapest bus trips today
BertCompanyCountOneCompanyName	Duration	Departure time	From	Departure	Arrival time	To	Destination	Seat classes	Price
Greyhound US	5h 45m	4:20 AM	Ontario, CA	Montclair Place	10:05 AM	San Diego	Seaport Village	Economy	$26	A Bus from Greyhound US goes from Montclair Place, Ontario, CA (USA) at 3/24/2026 4:20:00 AM to Seaport Village, San Diego (USA) arriving at 3/24/2026 10:05:00 AM. 50 Economy ticket for $26 per person are available. Travel duration is 5h 45m
Greyhound US	7h 15m	3:00 PM	Ontario, CA	Montclair Place	10:15 PM	San Diego	Seaport Village	Economy	$26	A Bus from Greyhound US goes from Montclair Place, Ontario, CA (USA) at 3/24/2026 3:00:00 PM to Seaport Village, San Diego (USA) arriving at 3/24/2026 10:15:00 PM. 50 Economy ticket for $26 per person are available. Travel duration is 7h 15m
FlixBus	5h 25m	4:40 AM	Ontario, CA	Montclair Place	10:05 AM	San Diego	Seaport Village	Economy	$26	A Bus from FlixBus goes from Montclair Place, Ontario, CA (USA) at 3/24/2026 4:40:00 AM to Seaport Village, San Diego (USA) arriving at 3/24/2026 10:05:00 AM. 50 Economy ticket for $26 per person are available. Travel duration is 5h 25m
FlixBus	7h 55m	2:20 PM	Ontario, CA	Montclair Place	10:15 PM	San Diego	Seaport Village	Economy	$26	A Bus from FlixBus goes from Montclair Place, Ontario, CA (USA) at 3/24/2026 2:20:00 PM to Seaport Village, San Diego (USA) arriving at 3/24/2026 10:15:00 PM. 50 Economy ticket for $26 per person are available. Travel duration is 7h 55m
Executive Lines	2h 30m	6:50 AM	Ontario, CA	S Euclid Ave	9:20 AM	San Diego	San Ysidro Transit Center	Economy	$42	A Bus from Executive Lines goes from S Euclid Ave, Ontario, CA (USA) at 3/24/2026 6:50:00 AM to San Ysidro Transit Center, San Diego (USA) arriving at 3/24/2026 9:20:00 AM. 50 Economy ticket for $42 per person are available. Travel duration is 2h 30m

Cheapest bus trips tomorrow
BertCompanyCountOneCompanyName	Duration	Departure time	From	Departure	Arrival time	To	Destination	Seat classes	Price
Greyhound US	7h 25m	4:20 AM	Ontario, CA	Montclair Place	11:45 AM	San Diego	Old Town Transit Center	Economy	$28	A Bus from Greyhound US goes from Montclair Place, Ontario, CA (USA) at 3/25/2026 4:20:00 AM to Old Town Transit Center, San Diego (USA) arriving at 3/25/2026 11:45:00 AM. 50 Economy ticket for $28 per person are available. Travel duration is 7h 25m
Greyhound US	6h 50m	9:35 AM	Ontario, CA	Montclair Place	4:25 PM	San Diego	Old Town Transit Center	Economy	$28	A Bus from Greyhound US goes from Montclair Place, Ontario, CA (USA) at 3/25/2026 9:35:00 AM to Old Town Transit Center, San Diego (USA) arriving at 3/25/2026 4:25:00 PM. 50 Economy ticket for $28 per person are available. Travel duration is 6h 50m
FlixBus	6h 10m	12:00 PM	Ontario, CA	Montclair Place	6:10 PM	San Diego	Old Town Transit Center	Economy	$28	A Bus from FlixBus goes from Montclair Place, Ontario, CA (USA) at 3/25/2026 12:00:00 PM to Old Town Transit Center, San Diego (USA) arriving at 3/25/2026 6:10:00 PM. 50 Economy ticket for $28 per person are available. Travel duration is 6h 10m
Greyhound US	8h 50m	3:00 PM	Ontario, CA	Montclair Place	11:50 PM	San Diego	Old Town Transit Center	Economy	$29	A Bus from Greyhound US goes from Montclair Place, Ontario, CA (USA) at 3/25/2026 3:00:00 PM to Old Town Transit Center, San Diego (USA) arriving at 3/25/2026 11:50:00 PM. 50 Economy ticket for $29 per person are available. Travel duration is 8h 50m
FlixBus	9h 15m	2:35 PM	Ontario, CA	Montclair Place	11:50 PM	San Diego	Old Town Transit Center	Economy	$29	A Bus from FlixBus goes from Montclair Place, Ontario, CA (USA) at 3/25/2026 2:35:00 PM to Old Town Transit Center, San Diego (USA) arriving at 3/25/2026 11:50:00 PM. 50 Economy ticket for $29 per person are available. Travel duration is 9h 15m

Cheapest bus trips Thursday
BertCompanyCountOneCompanyName	Duration	Departure time	From	Departure	Arrival time	To	Destination	Seat classes	Price
Greyhound US	9h 50m	4:20 AM	Ontario, CA	Montclair Place	2:10 PM	San Diego	Old Town Transit Center	Economy	$33	A Bus from Greyhound US goes from Montclair Place, Ontario, CA (USA) at 3/26/2026 4:20:00 AM to Old Town Transit Center, San Diego (USA) arriving at 3/26/2026 2:10:00 PM. 50 Economy ticket for $33 per person are available. Travel duration is 9h 50m
Greyhound US	7h 25m	4:20 AM	Ontario, CA	Montclair Place	11:45 AM	San Diego	Old Town Transit Center	Economy	$33	A Bus from Greyhound US goes from Montclair Place, Ontario, CA (USA) at 3/26/2026 4:20:00 AM to Old Town Transit Center, San Diego (USA) arriving at 3/26/2026 11:45:00 AM. 50 Economy ticket for $33 per person are available. Travel duration is 7h 25m
Greyhound US	6h 50m	9:35 AM	Ontario, CA	Montclair Place	4:25 PM	San Diego	Old Town Transit Center	Economy	$33	A Bus from Greyhound US goes from Montclair Place, Ontario, CA (USA) at 3/26/2026 9:35:00 AM to Old Town Transit Center, San Diego (USA) arriving at 3/26/2026 4:25:00 PM. 50 Economy ticket for $33 per person are available. Travel duration is 6h 50m
FlixBus	9h 15m	2:35 PM	Ontario, CA	Montclair Place	11:50 PM	San Diego	Old Town Transit Center	Economy	$33	A Bus from FlixBus goes from Montclair Place, Ontario, CA (USA) at 3/26/2026 2:35:00 PM to Old Town Transit Center, San Diego (USA) arriving at 3/26/2026 11:50:00 PM. 50 Economy ticket for $33 per person are available. Travel duration is 9h 15m
FlixBus	7h 40m	2:35 PM	Ontario, CA	Montclair Place	10:15 PM	San Diego	Seaport Village	Economy	$33	A Bus from FlixBus goes from Montclair Place, Ontario, CA (USA) at 3/26/2026 2:35:00 PM to Seaport Village, San Diego (USA) arriving at 3/26/2026 10:15:00 PM. 50 Economy ticket for $33 per person are available. Travel duration is 7h 40m

Cheapest bus trips Friday
BertCompanyCountOneCompanyName	Duration	Departure time	From	Departure	Arrival time	To	Destination	Seat classes	Price
Greyhound US	5h 45m	4:20 AM	Ontario, CA	Montclair Place	10:05 AM	San Diego	Seaport Village	Economy	$36	A Bus from Greyhound US goes from Montclair Place, Ontario, CA (USA) at 3/27/2026 4:20:00 AM to Seaport Village, San Diego (USA) arriving at 3/27/2026 10:05:00 AM. 50 Economy ticket for $36 per person are available. Travel duration is 5h 45m
Greyhound US	7h 15m	3:00 PM	Ontario, CA	Montclair Place	10:15 PM	San Diego	Seaport Village	Economy	$36	A Bus from Greyhound US goes from Montclair Place, Ontario, CA (USA) at 3/27/2026 3:00:00 PM to Seaport Village, San Diego (USA) arriving at 3/27/2026 10:15:00 PM. 50 Economy ticket for $36 per person are available. Travel duration is 7h 15m
Greyhound US	7h 25m	4:20 AM	Ontario, CA	Montclair Place	11:45 AM	San Diego	Old Town Transit Center	Economy	$36	A Bus from Greyhound US goes from Montclair Place, Ontario, CA (USA) at 3/27/2026 4:20:00 AM to Old Town Transit Center, San Diego (USA) arriving at 3/27/2026 11:45:00 AM. 50 Economy ticket for $36 per person are available. Travel duration is 7h 25m
FlixBus	7h 40m	2:35 PM	Ontario, CA	Montclair Place	10:15 PM	San Diego	Seaport Village	Economy	$36	A Bus from FlixBus goes from Montclair Place, Ontario, CA (USA) at 3/27/2026 2:35:00 PM to Seaport Village, San Diego (USA) arriving at 3/27/2026 10:15:00 PM. 50 Economy ticket for $36 per person are available. Travel duration is 7h 40m
FlixBus	6h 10m	12:00 PM	Ontario, CA	Montclair Place	6:10 PM	San Diego	Old Town Transit Center	Economy	$36	A Bus from FlixBus goes from Montclair Place, Ontario, CA (USA) at 3/27/2026 12:00:00 PM to Old Town Transit Center, San Diego (USA) arriving at 3/27/2026 6:10:00 PM. 50 Economy ticket for $36 per person are available. Travel duration is 6h 10m

Cheapest bus trips Saturday
BertCompanyCountOneCompanyName	Duration	Departure time	From	Departure	Arrival time	To	Destination	Seat classes	Price
Greyhound US	9h 50m	4:20 AM	Ontario, CA	Montclair Place	2:10 PM	San Diego	Old Town Transit Center	Economy	$29	A Bus from Greyhound US goes from Montclair Place, Ontario, CA (USA) at 3/28/2026 4:20:00 AM to Old Town Transit Center, San Diego (USA) arriving at 3/28/2026 2:10:00 PM. 50 Economy ticket for $29 per person are available. Travel duration is 9h 50m
Greyhound US	5h 45m	4:20 AM	Ontario, CA	Montclair Place	10:05 AM	San Diego	Seaport Village	Economy	$30	A Bus from Greyhound US goes from Montclair Place, Ontario, CA (USA) at 3/28/2026 4:20:00 AM to Seaport Village, San Diego (USA) arriving at 3/28/2026 10:05:00 AM. 50 Economy ticket for $30 per person are available. Travel duration is 5h 45m
Greyhound US	7h 15m	3:00 PM	Ontario, CA	Montclair Place	10:15 PM	San Diego	Seaport Village	Economy	$30	A Bus from Greyhound US goes from Montclair Place, Ontario, CA (USA) at 3/28/2026 3:00:00 PM to Seaport Village, San Diego (USA) arriving at 3/28/2026 10:15:00 PM. 50 Economy ticket for $30 per person are available. Travel duration is 7h 15m
FlixBus	7h 40m	2:35 PM	Ontario, CA	Montclair Place	10:15 PM	San Diego	Seaport Village	Economy	$30	A Bus from FlixBus goes from Montclair Place, Ontario, CA (USA) at 3/28/2026 2:35:00 PM to Seaport Village, San Diego (USA) arriving at 3/28/2026 10:15:00 PM. 50 Economy ticket for $30 per person are available. Travel duration is 7h 40m
FlixBus	6h 10m	12:00 PM	Ontario, CA	Montclair Place	6:10 PM	San Diego	Old Town Transit Center	Economy	$30	A Bus from FlixBus goes from Montclair Place, Ontario, CA (USA) at 3/28/2026 12:00:00 PM to Old Town Transit Center, San Diego (USA) arriving at 3/28/2026 6:10:00 PM. 50 Economy ticket for $30 per person are available. Travel duration is 6h 10m

Cheapest bus trips Sunday
BertCompanyCountOneCompanyName	Duration	Departure time	From	Departure	Arrival time	To	Destination	Seat classes	Price
Greyhound US	5h 45m	4:20 AM	Ontario, CA	Montclair Place	10:05 AM	San Diego	Seaport Village	Economy	$37	A Bus from Greyhound US goes from Montclair Place, Ontario, CA (USA) at 3/29/2026 4:20:00 AM to Seaport Village, San Diego (USA) arriving at 3/29/2026 10:05:00 AM. 50 Economy ticket for $37 per person are available. Travel duration is 5h 45m
Greyhound US	7h 15m	3:00 PM	Ontario, CA	Montclair Place	10:15 PM	San Diego	Seaport Village	Economy	$37	A Bus from Greyhound US goes from Montclair Place, Ontario, CA (USA) at 3/29/2026 3:00:00 PM to Seaport Village, San Diego (USA) arriving at 3/29/2026 10:15:00 PM. 50 Economy ticket for $37 per person are available. Travel duration is 7h 15m
Greyhound US	9h 50m	4:20 AM	Ontario, CA	Montclair Place	2:10 PM	San Diego	Old Town Transit Center	Economy	$37	A Bus from Greyhound US goes from Montclair Place, Ontario, CA (USA) at 3/29/2026 4:20:00 AM to Old Town Transit Center, San Diego (USA) arriving at 3/29/2026 2:10:00 PM. 50 Economy ticket for $37 per person are available. Travel duration is 9h 50m
FlixBus	7h 40m	2:35 PM	Ontario, CA	Montclair Place	10:15 PM	San Diego	Seaport Village	Economy	$37	A Bus from FlixBus goes from Montclair Place, Ontario, CA (USA) at 3/29/2026 2:35:00 PM to Seaport Village, San Diego (USA) arriving at 3/29/2026 10:15:00 PM. 50 Economy ticket for $37 per person are available. Travel duration is 7h 40m
FlixBus	9h 15m	2:35 PM	Ontario, CA	Montclair Place	11:50 PM	San Diego	Old Town Transit Center	Economy	$37	A Bus from FlixBus goes from Montclair Place, Ontario, CA (USA) at 3/29/2026 2:35:00 PM to Old Town Transit Center, San Diego (USA) arriving at 3/29/2026 11:50:00 PM. 50 Economy ticket for $37 per person are available. Travel duration is 9h 15m

Best Price Offer: The price for the cheapest bus from Ontario, CA to San Diego is $26 on 3/24/2026. Flexible travelers save on ticket prices.

Frequency of bus connections between Ontario, CA and San Diego

See here how frequent the connections between Ontario, CA and San Diego are, during different times and days of the week.

Tuesday is the busiest day, with more than 25 daily buses from Ontario, CA to San Diego. Thursday has instead the fewest connections, with only 8 daily coaches between Ontario, CA and San Diego.

The busiest time of the day is the Afternoon, with 56 buses from Ontario, CA to San Diego, while Evening sees the fewest connections between Ontario, CA and San Diego, with 4 offers.

Facts about the bus from Ontario, CA to San Diego

Compare all providers like Greyhound US, FlixBus and Limousine Express that travel 17 times every day by bus from Ontario, CA to San Diego in one click! Book your bus ticket from Ontario, CA to San Diego starting from $26!

Cheapest Bus	$26
Fastest Bus	2h 30m
Earliest Bus	4:20 AM
Latest Bus	3:00 PM
Daily Bus Routes	17 Ø
Distance	97.1 miles
Bus Companies	Greyhound US, FlixBus, Limousine Express and Executive Lines

Cheapest bus connections from Ontario, CA to San Diego

Every day, 17 buses from 4 bus companies leave Ontario, CA for San Diego: in the table below, you will find the cheapest prices for a bus ticket for this route, starting from 03/24/2026 and for the following days.

Sunday

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Sunday 03/22

Monday 03/23

Tuesday 03/24

$26

Wednesday 03/25

$40

Thursday 03/26

$33

Friday 03/27

$36

Saturday 03/28

$29

Sunday 03/29

$37

Monday 03/30

Tuesday 03/31

Wednesday 04/01

$32

Thursday 04/02

$37

Friday 04/03

Saturday 04/04

$32

Sunday 04/05

$29

Monday 04/06

$32

Tuesday 04/07

$27

Wednesday 04/08

$34

Thursday 04/09

$27

Friday 04/10

$29

Saturday 04/11

$27

Sunday 04/12

$30

Monday 04/13

$39

Tuesday 04/14

$27

Wednesday 04/15

$27

Thursday 04/16

$36

Friday 04/17

$36

Saturday 04/18

The cheapest time to travel from Ontario, CA to San Diego

See here on which day and which time of the day you can find the cheapest bus ticket from Ontario, CA to San Diego, for the next 30 days.

With a price starting from $26, Tuesday is the cheapest day for a bus from Ontario, CA to San Diego. Sunday instead is the most expensive day with prices starting from $29.

Night is the cheapest day time for bus tickets from Ontario, CA to San Diego, with $26. Evening is the most expensive time of the day with prices starting from $42.

How to save money travelling from Ontario, CA to San Diego

Travel can be expensive, but it doesn't need to be! Do you want to avoid paying a terrible price for your trip? Then follow these quick steps to save money:

Book the ticket from Ontario, CA to San Diego in advance! The earlier you book, the cheaper usually the price is. Also, you will be sure to have a place on the bus from Ontario, CA to San Diego, compared instead if you buy it at the last moment, or directly at the station.

If you can, avoid travelling at peak times. Instead of weekend, try travelling during the week. Travelling in the evening or at night it’s also cheaper, and later buses from Ontario, CA to San Diego are also emptier.

Beloved bus companies from Ontario, CA to San Diego

These are the most booked bus companies between Ontario, CA to San Diego from our users.

FlixBus from Ontario, CA to San Diego

Here you will find the key facts about the FlixBus bus route Ontario, CA to San Diego:

Cheapest Price	$26
Fastest Bus	5h 25m
Earliest Bus	4:40 AM
Last Bus	2:35 PM
Daily Connections	5 Ø
Found on	3/23/2026

Limousine Express from Ontario, CA to San Diego

Here you will find the key facts about the Limousine Express bus route Ontario, CA to San Diego:

Cheapest Price	$47
Fastest Bus	4h 0m
Earliest Bus	6:00 AM
Last Bus	10:25 PM
Daily Connections	7 Ø
Found on	2/21/2026

All bus stations and stops in Ontario, CA and San Diego

In the map below, you can see where to find all bus stations in Ontario, CA and San Diego.

Convention Center

E Holt Blvd 2200

Montclair Place

Moreno Street Montclair

Mills Drive Eb Fs

S Euclid Ave

Tufesa

E Francis St 642

Old Town Transit Center

Congress Street 2727

San Ysidro Transit Center

E San Ysidro Blvd 723

Santa Fe Depot

Kettner Blvd 1050

Seaport Village

W Harbor Dr 789

La Jolla Village

Hyatt Regency

Service and Comfort on the bus from Ontario, CA to San Diego

Want to know which seat classes are available on the buses from Ontario, CA to San Diego? Or which bus companies serve the route Ontario, CA to San Diego? Below you will find answers to your questions.

FAQs about the Ontario, CA to San Diego bus

How much does a Ontario, CA San Diego bus trip cost?

This depends on, among other things, the day and time of travel. The cheapest trip is available from $26 and takes 5h 25m to reach San Diego. Compare offers to save money!

How much could I save by comparing buses from Ontario, CA to San Diego?

This route is offered by 4 companies with a range of ticket prices between $26 and $47. Thus, we recommend booking your ticket as early as possible to make sure you get the cheapest bus ticket to San Diego.

On average, how many connections are available from Ontario, CA to San Diego each day?

Every day, the Ontario, CA to San Diego bus route is served by approximately 17 connections. With our search, you can compare bus times to find the perfect trip.

How long does a bus journey from Ontario, CA to San Diego take?

The fastest bus from Ontario, CA to San Diego is offered by Executive Lines and takes 2h 30m. Bus tickets for this connection cost $42. In this context, bear in mind that the journey can take longer due to traffic.

What time is the first bus from Ontario, CA to San Diego?

The earliest bus arriving in San Diego from Ontario, CA starts at 4:20 AM. However, information regarding departure times may differ on weekends and holidays. Simply use our search to find exact times for your planned travel date.

What time is the last bus from Ontario, CA to San Diego?

The latest bus trip departing from Ontario, CA for San Diego starts at 3:00 PM. Please note that departure times may differ on weekends and holidays. So just use our search to find the exact times for your planned travel date.

Which bus companies operate the Ontario, CA San Diego route?

When traveling by bus from Ontario, CA to San Diego, passengers can travel with Greyhound US, FlixBus and Limousine Express. With our search, you can compare all available bus tickets to book the one that works for you.

Is there a direct bus between Ontario, CA and San Diego?

You can check all the direct connections between Ontario, CA and San Diego by using our search and looking at the Changes section in our filters. These are some of the companies which offer a direct bus: Greyhound US, FlixBus and Limousine Express.

What can I take with me on the Ontario, CA to San Diego bus route?

Depending on which provider you travel with, what you're allowed to bring with you can vary. Generally, you can take a suitcase and hand luggage with you on the Ontario, CA San Diego bus route free of charge. Simply use our search to find a bus that is best suited to your needs for your planned travel date.

What equipment is available for the Ontario, CA San Diego bus route?

The equipment on board differs depending on the provider. However, many long-distance buses have WiFi so you can tell your friends your exact location during the journey. To make traveling even more pleasant, air conditioning systems provide ventilation. It is best to use our search to get precise information about the equipment of the bus from Ontario, CA to San Diego on your planned travel date.

How does CheckMyBus find the best bus deals from Ontario, CA to San Diego?

CheckMyBus collaborates directly with companies around the world to provide you with the best options when searching for a trip. We retrieve their first-hand data to show you real-time prices, schedules, and seat availability for 17 daily trips between Ontario, CA and San Diego. With the most up-to-date information from verified sources, you can fairly compare all available options and choose the trip that suits you best.

How does CheckMyBus technology work for trips from Ontario, CA to San Diego?

Prices and availability for 17 trips between Ontario, CA and San Diego change constantly. To provide you with the most up-to-date information, we connect directly with bus operators, Online Travel Agencies (OTAs), and Global Distribution Systems (GDS) via real-time interfaces (APIs). The data collected from these sources undergoes strict quality checks, is processed within our infrastructure, and is then presented to you on our search results pages. Visit our About Us page to learn more.

Available seat classes which are offered on the bus route Ontario, CA to San Diego

Economy

The cheapest option available for your ticket, it usually comes with reclinable seats and AC.

More bus routes to Ontario, CA and to San Diego

Here’s an overview of the most popular bus routes to Ontario, CA and to San Diego. Simply click on the connection of your choice, and you will find all the details about your bus route!