Next bus departures
| Operated by | Vehicle type | Departure time | Departure location | Trip duration | Arrival time | Arrival location | Recommended | Price and booking link |
|---|---|---|---|---|---|---|---|---|
 | Bus | S Euclid Avenue | San Ysidro Bus Station | CheapestFastest | ||||
 | Bus | Montclair (Ontario) | San Ysidro Bus terminal | No tags | ||||
Greyhound Lines, Inc. + FlixBus | Bus | Montclair / Ontario / Claremont | San Ysidro Bus terminal | No tags | ||||
| Bus | S Euclid Avenue | San Ysidro Bus Station | No tags | ||||
 | Bus | Ontario Convention Center | San Ysidro Greyhound Bus Station | No tags |
Last refresh of the prices: Yesterday at 17:22 PST.
Get from Ontario to San Ysidro
The journey takes about 6 hours 15 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 Ysidro?
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
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Frequently asked questions about travelling by bus from Ontario, CA to San Ysidro, CA
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 Ysidro?
The cheapest coach tickets from Ontario to San Ysidro start from £25. The average price for this route is around £38. 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 Ysidro?
The average bus journey time from Ontario to San Ysidro is 6h 15m, covering a distance of 109 miles. The fastest bus can take you there in 2h 30m and is operated by Executive Lines.
Which bus companies service the Ontario to San Ysidro route?
Several major bus companies operate on this route with 23 buses available per day, including services from Executive Lines, Los Limousines, FlixBus, Greyhound.
What is the earliest and latest departure time for the bus from Ontario to San Ysidro?
The earliest bus departs from Ontario to San Ysidro at 04:20. And the latest bus departs at 22:25.
What are the CO₂ emissions for the bus trip from Ontario to San Ysidro?
A bus journey from Ontario to San Ysidro 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 Ysidro?
According to Busbud customers, the highest-rated bus company on this route is Executive Lines, with an average rating of 3.5 out of 5 stars based on 87 reviews.
Which company has the best Wi-Fi from Ontario to San Ysidro?
Based on Busbud reviews, the bus company Executive Lines has the best Wi-Fi rating with a score of 3.4.
Which bus company offers the most punctual service from Ontario to San Ysidro?
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 Ysidro?
According to Busbud traveller reviews, the bus company with the cleanest buses on this route is Executive Lines, with a cleanliness rating of 4.9 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 Ysidro, CA was searched and found on 27 Jan 2026 with a price of £24To 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 Ysidro, CA as early as possible.
You can expect to pay from £24 to £53 for a bus ticket from Ontario, CA to San Ysidro, CA based on the last 2 days. You can expect to find the cheapest price for the trip at £24, which is on 2026-01-27.
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.
