Bus from Ontario, CA to San Francisco, US: Tickets & Schedules

Next departures

Next departures for Ontario to San Francisco on December 11
Operated byVehicle typeDeparture timeDeparture locationTrip durationArrival timeArrival locationRecommendedPrice and booking link
FlixBus + Greyhound Lines, Inc.
Montclair (Ontario)
San Francisco Bus StationCheapest
Greyhound Lines, Inc.
Montclair / Ontario / Claremont
San Francisco Bus StationFastest
Greyhound Lines, Inc. + FlixBus
Montclair / Ontario / Claremont
San Francisco Bus StationNo tags
Amtrak
Ontario Station
Mission St & Fremont StNo tags
Amtrak
Ontario Station
Mission St & Fremont StNo tags

Last refresh of the prices: Last Wednesday at 5:20 PM PST.

Get from Ontario to San Francisco

This route is served by bus only

The journey takes about 14 hours 50 minutes, and with fares starting at just $87, it presents an excellent value for a comfortable ride.

5bus per day
14h 50mAverage Duration
591 kmDistance
15kgCO₂ emissions

Frequently asked questions about travelling from Ontario, CA to San Francisco, US by bus

Please note that schedules, routes, or operator details shown here may be updated or vary at the time of your trip.

  1. How much is the bus ticket from Ontario to San Francisco?

    The cheapest bus tickets from Ontario to San Francisco start from $87. The average price for this route is around $174. Busbud recommends that you book your tickets in advance for a better chance to get the lowest possible price.

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

    The average bus travel time from Ontario to San Francisco is 14h 50m, covering a distance of 591 km. The quickest bus can get you there in 10h 10m and is operated by Greyhound.

  3. Which bus companies service the Ontario to San Francisco route?

    Several major bus companies operate on this route with 5 buses available per day, including services from Amtrak, Greyhound, FlixBus.

  4. What are the earliest and latest departure times for the bus from Ontario to San Francisco?

    The earliest bus departs from Ontario to San Francisco at 4:20am. And the latest bus departs at 9:05pm.

  5. What are the CO₂ emissions for the bus trip from Ontario to San Francisco?

    A bus trip from Ontario to San Francisco generates an estimated 15 kg of CO₂, making it a highly eco-friendly travel option and a mode of travel recommended by Busbud.

  6. What is the best bus company from Ontario to San Francisco?

    According to Busbud customers, the highest-rated bus company on this route is Amtrak, with an average rating of 4.1 out of 5 stars based on 5627 reviews.

  7. Which bus company has the best Wi-Fi from Ontario to San Francisco?

    Based on Busbud reviews, the bus company Amtrak has the highest Wi-Fi rating with a score of 3.6.

  8. Which bus company has the best on-time performance from Ontario to San Francisco?

    According to Busbud traveller reviews, the most punctual bus company on this route is FlixBus, with a punctuality rating of 3.9 out of 5 stars.

  9. Which bus company has the cleanest buses from Ontario to San Francisco?

    According to Busbud traveller reviews, the bus company with the cleanest buses on this route is Amtrak, with a cleanliness rating of 4.5 out of 5 stars.

Find cheapest prices for buses

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

Best price found
12-07
$125
12-08
$125
Today
No data
12-10
$117
12-11
$125
12-12
$125
12-13
No data
12-14
$125
busbud logoThe cheapest trip from Ontario, CA to San Francisco, US was searched and found on Dec 10, 2025 with a price of $117

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 Francisco, US, as early as possible.

You can expect to pay from $117 to $235 for a bus ticket from Ontario, CA to San Francisco, US based on the last 2 days. You can expect to find the cheapest price for the trip at $117 which is on 2025-12-10.

Usually Greyhound 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.

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