| Outbound | Return | Airlines | Shop | Baggage | Price | ||
|---|---|---|---|---|---|---|---|
| Best option Ontario San Francisco | Outbound 07/25/25 direct F92677 01h 33min | Return 08/17/25 direct F92678 01h 29min |  Frontier Airlines |  | $109 | ||
| Ontario San Francisco | Outbound 09/04/25 direct F92677 01h 32min | Return 09/28/25 direct F92678 01h 29min | Frontier Airlines | | $111 | ||
| Ontario San Francisco | Outbound 09/04/25 direct F92677 01h 32min | Return 09/28/25 direct F92678 01h 29min | Frontier Airlines |  | $117 | ||
| Ontario San Francisco | Outbound 09/04/25 direct F92677 01h 32min | Return 09/28/25 direct F92678 01h 29min | Frontier Airlines |  | ? | $121 | |
| Ontario San Francisco | Outbound 07/25/25 direct F92677 01h 33min | Return 08/17/25 direct F92678 01h 29min | Frontier Airlines |  | $125 | ||
| Ontario San Francisco | Outbound 07/25/25 direct F92677 01h 33min | Return 08/17/25 direct F92678 01h 29min | Frontier Airlines |  | $130 | ||
| Ontario San Francisco | Outbound 10/18/25 1 Stopover (LAS) F91358, F93801 04h 07min | Return 11/17/25 direct F92678 01h 29min | Frontier Airlines | | $141 | ||
| Ontario San Francisco | Outbound 10/18/25 1 Stopover (LAS) F92232, F94401 13h 22min | Return 11/17/25 direct F92678 01h 29min | Frontier Airlines | | $144 | ||
| Ontario San Francisco | Outbound 10/18/25 1 Stopover (LAS) F92232, F94401 13h 22min | Return 11/17/25 direct F92678 01h 29min | Frontier Airlines | | $149 | ||
| Ontario San Francisco | Outbound 07/25/25 direct UA2332 01h 27min | Return 08/17/25 direct UA0368 01h 27min |  United Airlines |  | ? | $180 |
Tips and tricks to help you find cheap flights from Ontario to San Francisco
Favorite airline: Frontier Airlines
The favorite airline for flights from Ontario to San Francisco is Frontier Airlines.
Frontier Airlines
90 %
United Airlines
10 %