Cheapest flights from Ontario to San Francisco
Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from Ontario to San Francisco. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.
Cheapest one way flight
$30
Frontier Airlines
Direct flight
1h 33m
08/18/2025
The cheapest one-way flight from Ontario to San Francisco departs on 08/18/2025, is operated by Frontier Airlines and costs $30
Cheapest round trip flight
$70
Frontier Airlines
Direct flight
3h 2m
06/28/2025
The cheapest roundtrip flight from Ontario to San Francisco departs on 06/28/2025, is operated by Frontier Airlines and costs $70
The fastest flight
1h 27m
Fastest flight from Ontario to San Francisco takes 1h 27m
Direct flights
Several times a week
There are direct flights on this route 6 days a week: Su, Mo, Tu, Th, Fr, and Sa
Earliest flight
6:00 AM
Latest flight
6:48 PM
Direct flights count
36
Distance
597km
Timezone difference
0h
The distance between Ontario and San Francisco is 597km (370 miles). There are 36 direct flights from Ontario to San Francisco. Ontario and San Francisco are in the same time zone. Flights from Ontario begin at 6:00 AM. The latest flight from Ontario departs at 6:48 PM.
