Bus Tickets from Ontario, CA to San Diego, CA

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

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TomorrowApr 24
from $39
FriApr 25
from $37
SatApr 26
SunApr 27
MonApr 28
from $42
TueApr 29
WedApr 30
ThuMay 1

Cheap buses leaving tomorrow

One passenger / one way

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

Accepted payments

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Bus Ontario to San Diego: Trip Overview

Average ticket price$50
Average bus trip duration6h
Number of daily buses19
Earliest bus departure4:40am
Distance111 miles (179 km)
Latest bus departure10:25pm

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 traveling 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 for your trip Ontario - San Diego

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
$31
04/22
$41
Today
$40
04/24
$39
04/25
$37
04/26
$36
04/27
No data
04/28
$42
busbud logoThe cheapest trip from Ontario to San Diego was searched and found on Apr 21, 2025 with a price of $31

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

You can expect to pay from $31 to $50 for a bus ticket from Ontario to San Diego based on the last 2 days. You can expect to find the cheapest price for the trip at $36 which is on 2025-04-26.

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

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 by bus?

Bus from Ontario to San Diego

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 worldwide 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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