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: Today at 11:19 AM PST.
Get from Ontario to San Ysidro
The journey takes about 6 hours 9 minutes and with fares starting at just $35, 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 traveling from Ontario, CA to San Ysidro, CA by bus
Please note that schedules, routes, or operator details shown here may be updated or vary at the time of your trip.
How much is the bus ticket from Ontario to San Ysidro?
The cheapest bus tickets from Ontario to San Ysidro start from $35. The average price for this route is around $49. Busbud recommends that you book your tickets in advance for a better chance to get the lowest possible price.
How long is the bus ride from Ontario to San Ysidro?
The average bus trip duration from Ontario to San Ysidro is 6h 9m, covering a distance of 109 miles (175 km). The quickest bus can get 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 22 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 3:20am. And the latest bus departs at 10:25pm.
What are the CO₂ emissions for the bus trip from Ontario to San Ysidro?
A bus trip from Ontario to San Ysidro generates an estimated 4 kg of CO₂, making it a highly eco-friendly travel option and recommended mode of travel by Busbud.
What 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 3.6 out of 5 stars based on 83 reviews.
Which bus company has the best Wi-Fi from Ontario to San Ysidro?
Based on reviews on Busbud, the bus company Executive Lines has the best Wi-Fi rating with a score of 3.4.
Which bus company has the most timely service from Ontario to San Ysidro?
According to Busbud traveller reviews, the most timely 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 Nov 27, 2025 with a price of $42To 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 $42 to $106 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 $42 which is on 2025-11-30.
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.
