Find coaches from Ontario, CA to San Diego, CA, US

Next departures

Next departures from Ontario to San Diego on 31 October
Operated byVehicle typeDeparture timeDeparture locationTrip durationArrival timeArrival locationRecommendedPrice and booking link
FlixBus + Greyhound Lines, Inc.
Montclair (Ontario)
Greyhound Bus StopCheapest
Los Limousines
Ontario Convention Center
Cross Border Xpress CBX (USA)Fastest
FlixBus
Montclair (Ontario)
San Diego (Old Town-FlixBus)No tags
FlixBus + Greyhound Lines, Inc.
Montclair (Ontario)
Greyhound Bus StopNo tags
Greyhound Lines, Inc.
Montclair / Ontario / Claremont
Greyhound Bus StopNo tags

Last refresh of the prices: Yesterday at 6:53 PM PDT.

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Get from Ontario to San Diego

busbud logoThis route is served by bus only

The journey takes about 6 hours 40 minutes, and with fares starting at just US$30, it presents an excellent value for a comfortable ride.

28bus per day
6h 40mAverage duration
156 kmDistance
4kgCO₂ emissions

Bus Ontario, CA to San Diego, CA, US: Trip Overview

Average ticket priceUS$44
Average bus trip duration6h 40m
Number of daily buses28
Earliest bus departure03:20
Distance155 km
Latest bus departure22:25

Ontario to San Diego Bus

Busbud shows you the best bus ticket fares and bus schedules so you can easily plan and book a trip by bus from Ontario to San Diego.

We make sure you can find a bus service from Ontario to San Diego from the most reliable bus companies operating this trip.

From cheap bus tickets to more luxurious buses travelling from Ontario to San Diego, we offer a wide range of bus services to best suit your needs depending on how much your budget is.

Frequently asked questions on the trip Ontario, CA - San Diego, CA, US

  1. How much does a bus ticket from Ontario to San Diego cost?

    The bus ticket price from Ontario to San Diego starts at US$30. The best way to find cheap bus tickets from Ontario to San Diego is to book your tickets as early as possible. Prices tend to rise as your travel date approaches, so book in advance to secure the best prices!

  2. How long is the bus ride from Ontario to San Diego?

    The average travel time between Ontario and San Diego is around 6h 40m, although the fastest bus will take about 3h 35m. This is the time it takes to travel the 157 km that separates the two cities.

  3. How many daily bus connections are there between Ontario and San Diego?

    The number of buses from Ontario to San Diego can differ depending on the day of the week. On average, there are 28 on this route. Some buses run direct routes, while others have layovers. Simplify your bus trip from Ontario to San Diego by comparing and selecting the bus that fits your travel style and budget on Busbud.

  4. Which bus companies travel from Ontario to San Diego?

    When taking the bus from Ontario to San Diego, you can travel comfortably and safely with Los Limousines, FlixBus, Greyhound.

  5. What are the departure and arrival stations when taking the bus from Ontario to San Diego?

    Buses travelling between Ontario and San Diego leave from Ontario California Bus Stop Carl's Jr & Teriyaki House or Ontario Tufesa Bus Stop and arrive at Mission Valley Sheraton, Old Town Courtyard Marriot, Downtown Holiday Inn.

Find cheapest prices for buses

Price is for a one-way ticket for one passenger and based on past searches.

Best price found
28/10
US$33
29/10
US$37
Today
US$36
31/10
US$37
01/11
US$31
02/11
US$35
03/11
US$30
04/11
US$27
busbud logoThe cheapest trip from Ontario, CA to San Diego, CA, US was searched and found on 04 Nov 2025 with a price of US$27

To save money and be sure you have the best seat, it's a good idea to buy your bus tickets from Ontario, CA to San Diego, CA, US as early as possible.

You can expect to pay from US$27 to US$83 for a bus ticket from Ontario, CA to San Diego, CA, US based on the last 2 days. You can expect to find the cheapest price for the trip at US$27, which is on 2025-11-04.

Usually Los Limousines, FlixBus will charge you higher prices for tickets closer to the departure date. To find the best prices, you should be flexible on your date of travel.

About Bus Travel

Bus Travel Tips

If you're abroad, study some local language. Not only could it get you out of a pickle during your bus trip from Ontario to San Diego but it'll also be endearing to native speakers who will surely appreciate your effort.

Start sightseeing the minute your bus leaves the station. If you're on the night bus from Ontario to San Diego, get comfy and count the stars.

Taking the bus creates the smallest carbon footprint compared to other modes of transport. Not to mention that buses will allow you to discover scenic gems from Ontario to San Diego that are otherwise impossible to come by with a plane.

Make a music playlist for your bus ride from Ontario to San Diego, and enjoy the scenery to tunes from your own personal soundtrack.

Did you know?

The word 'bus' is an abbreviation of 'omnibus" which means 'for all' in Latin as buses were meant to be transportation for everybody.

Did you know there are on average 4,400 intercity bus departures every day in the US only? This number has been growing for 9 years in a row, yay!

Did you know some bus companies in Germany offer to their passenger low-costs snacks and regional beer based on their destination? Prosit!

Will you be returning to Ontario, CA by bus?

Bus from San Diego, CA, US to Ontario, CA

Why choose Busbud?

The Best Way To Book Bus and Train Tickets

Busbud helps you easily search, compare and book intercity bus tickets on a worlwide scale with our comprehensive list of bus routes and schedules. With Busbud, wherever you go, you have a worldwide bus station within reach and available in your own language and currency. Busbud partners with safe and reliable bus companies throughout the world such as Greyhound, Eurolines, ALSA, OUIBUS (BlaBlaBus), National Express and many others so you can buy tickets without a worry.

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