| Outbound | Return | Airlines | Shop | Baggage | Price | ||
|---|---|---|---|---|---|---|---|
| Best option San Francisco Ontario | Outbound 09/04/25 direct F92678 01h 27min | Return 09/07/25 direct F92677 01h 35min |  Frontier Airlines |  | $68 | ||
| San Francisco Ontario | Outbound 09/04/25 direct F92678 01h 27min | Return 09/07/25 direct F92677 01h 35min | Frontier Airlines |  | $69 | ||
| San Francisco Ontario | Outbound 09/05/25 direct F92678 01h 27min | Return 09/08/25 direct F92677 01h 29min | Frontier Airlines | | $78 | ||
| San Francisco Ontario | Outbound 09/05/25 direct F92678 01h 27min | Return 09/08/25 direct F92677 01h 29min | Frontier Airlines | | $88 | ||
| San Francisco Ontario | Outbound 09/05/25 direct F92678 01h 27min | Return 09/08/25 direct F92677 01h 29min | Frontier Airlines | | $89 | ||
| San Francisco Ontario | Outbound 09/05/25 direct F92678 01h 27min | Return 09/08/25 direct F92677 01h 29min | Frontier Airlines |  | ? | $96 | |
| San Francisco Ontario | Outbound 09/05/25 direct F92678 01h 27min | Return 09/08/25 direct F92677 01h 29min | Frontier Airlines | | ? | $105 | |
| San Francisco Ontario | Outbound 09/04/25 direct F92678 01h 27min | Return 09/07/25 direct F92677 01h 35min | Frontier Airlines |  | ? | $114 | |
| San Francisco Ontario | Outbound 09/05/25 direct F92678 01h 27min | Return 09/08/25 direct F92677 01h 29min | Frontier Airlines | | ? | $124 | |
| San Francisco Ontario | Outbound 09/05/25 direct UA1697 01h 28min | Return 09/08/25 direct UA0393 01h 19min |  United Airlines |  | ? | $157 |
Tips and tricks to help you find cheap flights from San Francisco to Ontario
Favorite airline: Frontier Airlines
99 % of travelers choose to book flights on this route with Frontier Airlines and United Airlines.
Frontier Airlines
83 %
United Airlines
16 %