Find coaches from San Diego, CA to Ontario, CA

Find affordable coach tickets from San Diego, CA to Ontario, CA with flexible options. Book your journey now

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Today20 May
from US$46
Tomorrow21 May
Thu22 May
from US$40
Fri23 May
Sat24 May
Sun25 May
Mon26 May
Tue27 May

Cheap buses leaving Thursday

One passenger / one way

  • This trip is recommended because it is the: Cheapest
    Departure time: 22 May at
    Departure city: San Diego
    Departure location: San Diego (Old Town-FlixBus)
    Arrival time: 22 May at
    Destination city: Ontario
    Destination location: Montclair (Ontario)
    Operated by: FlixBusFlixBus
    Vehicle: BusDuration:
  • This trip is recommended because it is the: Fastest
    Departure time: 22 May at
    Departure city: San Diego
    Departure location: Cross Border Xpress CBX (USA)
    Arrival time: 22 May at
    Destination city: Ontario
    Destination location: Ontario Convention Center
    Operated by: Los LimousinesLos Limousines
    Vehicle: BusDuration:
  • Departure time: 22 May at
    Departure city: San Diego
    Departure location: San Diego (Old Town-FlixBus)
    Arrival time: 23 May at
    Destination city: Ontario
    Destination location: Montclair (Ontario)
    Operated by: FlixBusFlixBus
    Vehicle: BusDuration:
  • Departure time: 22 May at
    Departure city: San Diego
    Departure location: Greyhound Bus Stop
    Arrival time: 23 May at
    Destination city: Ontario
    Destination location: Montclair (Ontario)
    Operated by: Greyhound Lines, Inc. + FlixBus
    Greyhound Lines, Inc. + FlixBus
    Vehicle: BusDuration:
  • Departure time: 22 May at
    Departure city: San Diego
    Departure location: Cross Border Xpress CBX (USA)
    Arrival time: 22 May at
    Destination city: Ontario
    Destination location: Ontario Convention Center
    Operated by: Los LimousinesLos Limousines
    Vehicle: BusDuration:

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Compare 3 ways to travel from San Diego to Ontario

Bus
Average priceUS$30 - US$96Average duration6h
4kg CO₂e5 out of 5 stars
CheapestFastestMost eco-friendly
Train
Average priceUS$49 - US$59Average duration6h 44m
14kg CO₂e1 out of 5 stars
Shuttle
Average priceUS$129 - US$136Average duration7h 13m
5kg CO₂e4 out of 5 stars
busbud logoBusbud recommends taking the bus from San Diego to Ontario

Among the sustainable travel choices, the bus stands out as a good way to reach Ontario. The journey takes about 6 hours and with fares starting at just US$30, it presents an excellent value for a comfortable ride.

14bus per day
6hAverage duration
US$30Cheapest ticket
4kgCO₂ emissions

Bus San Diego to Ontario: Trip Overview

Average ticket priceUS$51
Average bus trip duration6h
Number of daily buses14
Earliest bus departure00:30
Distance111 miles
Latest bus departure22:30

San Diego to Ontario Bus

Busbud helps you find a bus from San Diego to Ontario. Get the best fare and schedule, book a round trip ticket or find buses with WiFi and electrical outlets.

Bus service from San Diego to Ontario will be provided by the most trusted bus companies.

From cheap bus tickets to more luxurious buses travelling from San Diego to Ontario, 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 San Diego - Ontario

  1. How much does it cost to go to Ontario by bus?

    For coach travel from San Diego to Ontario, ticket prices typically start at US$30 and can reach a maximum of US$96. These prices can change depending on factors like the date, the class and the coach company you choose. Keep in mind that booking tickets on the day of travel might result in higher prices.

  2. How long is a coach from San Diego to Ontario?

    The average duration for a trip from San Diego to Ontario by coach is around 6h. The quickest coach journey typically takes 3h 20m. Please be aware that the time it takes for your journey may vary depending on the traffic conditions along the route.

  3. At what time is the first coach from San Diego to Ontario?

    The first coach to Ontario from San Diego departs at 00:30. Keep in mind that departure times might change on weekends and holidays.

  4. What's the distance between San Diego and Ontario by coach?

    The distance between San Diego and Ontario by coach is approximately 98 miles (157 km).

  5. What is the best way to go from San Diego to Ontario without a car?

    The best way to go from San Diego to Ontario without a car is by coach. They are frequent and reliable, offering a convenient and eco-friendly journey. You can also consider rideshare services depending on your preferences.

Find cheapest prices for buses

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

Best price found
18/05
US$47
19/05
US$34
Today
US$47
21/05
US$34
22/05
US$40
23/05
US$45
24/05
US$40
25/05
US$36
busbud logoThe cheapest trip from San Diego to Ontario was searched and found on 19 May 2025 with a price of US$34

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

You can expect to pay from US$34 to US$78 for a bus ticket from San Diego to Ontario based on the last 2 days. You can expect to find the cheapest price for the trip at US$34, which is on 2025-05-21.

Usually LLIO 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

Make friends with the driver. They usually know a lot about your destination and may even recommend which side of the bus to sit on to get the best views on the road between San Diego and Ontario!

Much more than a mere vehicle taking you from San Diego to Ontario, riding the bus will expose you to some of the most stunning panoramas while enroute to your final bus stop.

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 San Diego to Ontario that are otherwise impossible to come by with a plane.

Tune out to the fine sounds of your best music playlist on your bus trip from San Diego to Ontario while indulging in miles on end of beautiful scenic views.

Did you know?

It takes 27 hours to go by bus from Lima to Cusco, one of the craziest bus trips on the world. This route is used daily by locals and backpackers.

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

The Superbus, created by a Dutch engineer is the world's fastest bus with 250 km/h. Too bad it's only a prototype for now.

What's the cheapest way to go from San Diego to Ontario?

busbud logoThe bus is the cheapest travel choice for this destination

Will you be returning to San Diego by bus?

Bus from San Diego to Ontario

You can also go to Ontario by train

Train from San Diego to Ontario

Why choose Busbud?

The Best Way To Book Bus and Train Tickets

Busbud makes bus travel easy. We help travellers find a bus, plot routes, and book intercity bus tickets all over the world. 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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Popular Buses Connecting Ontario

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