| Outbound | Return | Airlines | Shop | Baggage | Price | ||
|---|---|---|---|---|---|---|---|
| Best option Denver San Diego | Outbound 05/16/26 direct F92711 02h 36min | Return 05/29/26 direct AS3021 02h 34min |  Frontier Airlines |  | $124 | ||
| Denver San Diego | Outbound 05/16/26 direct F92711 02h 36min | Return 05/29/26 direct AS3021 02h 34min | Frontier Airlines |  | ? | $138 | |
| Denver San Diego | Outbound 06/25/26 direct F94989 02h 26min | Return 06/30/26 direct F92818 02h 44min | Frontier Airlines |  | ? | $144 | |
| Denver San Diego | Outbound 06/25/26 direct F94989 02h 26min | Return 06/30/26 direct F92818 02h 44min | Frontier Airlines | | $146 | ||
| Denver San Diego | Outbound 06/25/26 direct F94989 02h 26min | Return 06/30/26 direct F92818 02h 44min | Frontier Airlines |  | $158 | ||
| Denver San Diego | Outbound 05/16/26 direct F92711 02h 36min | Return 05/29/26 1 Stopover (PDX) AS1402, AS0711 06h 28min | Frontier Airlines |  | ? | $172 | |
| Denver San Diego | Outbound 07/26/26 direct F92421 02h 29min | Return 08/05/26 direct AS1619 02h 32min | Frontier Airlines | | ? | $183 | |
| Denver San Diego | Outbound 05/16/26 direct AS3017 02h 42min | Return 05/29/26 direct AS3021 02h 34min |  Alaska Airlines |  | ? | $204 | |
| Denver San Diego | Outbound 07/26/26 direct AS1617 02h 36min | Return 08/05/26 direct AS3012 02h 33min | Alaska Airlines | | ? | $203 | |
| Denver San Diego | Outbound 05/16/26 direct F92711 02h 36min | Return 05/29/26 2 Stopovers (SFO, PDX) AS3305, AS1302, AS0711 11h 27min | Frontier Airlines | | ? | $336 |
Tips and tricks to help you find cheap flights from Denver to San Diego
Favorite airline: Frontier Airlines
65 % of flights from Denver to San Diego are booked with Frontier Airlines.
Frontier Airlines
65 %
United Airlines
29 %
Sun Country Airlines
6 %