Bus Tickets from San Diego, CA to Ontario, CA

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

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TomorrowApr 24
from $45
FriApr 25
from $45
SatApr 26
SunApr 27
from $46
MonApr 28
TueApr 29
WedApr 30
ThuMay 1

Cheap buses leaving tomorrow

One passenger / one way

  • This trip is recommended because it is: Cheapest + Fastest
    Departure time: April 24 at
    Departure city: San Diego
    Departure location: Cross Border Xpress CBX (USA)
    Arrival time: April 24 at
    Destination city: Ontario
    Destination location: Ontario Convention Center
    Operated by: Los LimousinesLos Limousines
    Vehicle: BusDuration:
  • Departure time: April 24 at
    Departure city: San Diego
    Departure location: San Diego (Old Town-FlixBus)
    Arrival time: April 24 at
    Destination city: Ontario
    Destination location: Montclair (Ontario)
    Operated by: FlixBusFlixBus
    Vehicle: BusDuration:
  • Departure time: April 24 at
    Departure city: San Diego
    Departure location: Cross Border Xpress CBX (USA)
    Arrival time: April 24 at
    Destination city: Ontario
    Destination location: Ontario Convention Center
    Operated by: Los LimousinesLos Limousines
    Vehicle: BusDuration:
  • Departure time: April 24 at
    Departure city: San Diego
    Departure location: San Diego (Old Town-FlixBus)
    Arrival time: April 25 at
    Destination city: Ontario
    Destination location: Montclair (Ontario)
    Operated by: FlixBusFlixBus
    Vehicle: BusDuration:
  • Departure time: April 24 at
    Departure city: San Diego
    Departure location: Cross Border Xpress CBX (USA)
    Arrival time: April 24 at
    Destination city: Ontario
    Destination location: Ontario Convention Center
    Operated by: Los LimousinesLos Limousines
    Vehicle: BusDuration:

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Bus San Diego to Ontario: Trip Overview

Average ticket price$50
Average bus trip duration5h 55m
Number of daily buses14
Earliest bus departure12:30am
Distance88 miles (141 km)
Latest bus departure10:30pm

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 traveling 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 for your trip San Diego - Ontario

Find cheapest prices for buses

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

Best price found
04/21
No data
04/22
$46
Today
$41
04/24
$45
04/25
$46
04/26
$33
04/27
$47
04/28
$35
busbud logoThe cheapest trip from San Diego to Ontario was searched and found on Apr 26, 2025 with a price of $33

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 $33 to $51 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 $33 which is on 2025-04-26.

Usually FlixBus Inc., 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?

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Busbud makes bus travel easy. We help travelers 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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