Next bus departures
| Operated by | Vehicle type | Departure time | Departure location | Trip duration | Arrival time | Arrival location | Recommended | Price and booking link |
|---|---|---|---|---|---|---|---|---|
 | Bus | Montclair / Ontario / Claremont | Greyhound Bus Stop | Cheapest | ||||
 | Bus | Ontario Convention Center | Cross Border Xpress CBX (USA) | Fastest | ||||
 | Bus | Montclair (Ontario) | San Diego (Old Town-FlixBus) | No tags | ||||
FlixBus + Greyhound Lines, Inc. | Bus | Montclair (Ontario) | Greyhound Bus Stop | No tags | ||||
| Bus | Montclair / Ontario / Claremont | Greyhound Bus Stop | No tags |
Last refresh of the prices: Last Sunday at 22:41 PST.
Get from Ontario to San Diego
The journey takes about 6 hours 50 minutes, and with fares starting at just £25, it presents an excellent value for a comfortable ride.
Where are the popular stops in Ontario and San Diego?
Stops in Ontario
- A
Ontario California Bus Stop Carl's Jr & Teriyaki House
1625 E 4th St, Ontario, CA 91764, USA - B
Ontario Tufesa Bus Stop
1739 S Euclid Ave, Ontario, CA 91762, USA
Stops in San Diego
- A
Mission Valley Sheraton
1433 Camino del Rio S, San Diego, CA 92108, USA - B
Old Town Courtyard Marriot
2435 Jefferson St, San Diego, CA 92110, USA - C
Downtown Holiday Inn
1617 1st Ave, San Diego, CA 92101, USA - D
Greyhound Station
1313 National Ave, San Diego, CA 92101, USA - E
Market St. & Park Blvd
601 Park Boulevard, San Diego, CA 92101, USA - F
San Ysidro McDonald's
727 E San Ysidro Blvd, San Diego, CA 92173, USA
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Frequently asked questions about travelling by bus from Ontario, CA to San Diego, CA, US
Please note that timetables, routes, or operator details shown here may be updated or vary at the time of your journey.
How much is the bus ticket from Ontario to San Diego?
The cheapest coach tickets from Ontario to San Diego start from £25. The average price for this route is around £35. Busbud recommends that you book your tickets in advance for a better chance to get the lowest possible price.
How long is the bus journey from Ontario to San Diego?
The average bus journey time from Ontario to San Diego is 6h 50m, covering a distance of 111 miles. The fastest bus can take you there in 3h 35m and is operated by Los Limousines.
Which bus companies service the Ontario to San Diego route?
Several major bus companies operate on this route with 25 buses available per day, including services from Los Limousines, FlixBus, Greyhound.
What is the earliest and latest departure time for the bus from Ontario to San Diego?
The earliest bus departs from Ontario to San Diego at 03:20. And the latest bus departs at 22:25.
What are the CO₂ emissions for the bus trip from Ontario to San Diego?
A bus journey from Ontario to San Diego produces an estimated 4 kg of CO₂, making it a highly eco-friendly choice and a mode of travel recommended by Busbud.
Which is the best bus company from Ontario to San Diego?
According to Busbud customers, the highest-rated bus company on this route is FlixBus, with an average rating of 3.5 out of 5 stars based on 11380 reviews.
Which company has the best Wi-Fi from Ontario to San Diego?
Based on Busbud reviews, the bus company Los Limousines has the best Wi-Fi rating with a score of 2.8.
Which bus company offers the most punctual service from Ontario to San Diego?
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.
Which bus company has the cleanest buses from Ontario to San Diego?
According to Busbud traveller reviews, the bus company with the cleanest buses on this route is FlixBus, with a cleanliness rating of 4.1 out of 5 stars.
Find cheapest prices for buses
Price is for a one-way ticket for one passenger and based on past searches.
The cheapest trip from Ontario, CA to San Diego, CA, US was searched and found on 3 Dec 2025 with a price of £20To 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 £20 to £84 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 £20, which is on 2025-12-03.
Usually 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.
