| Outbound | Return | Airlines | Shop | Baggage | Price | ||
|---|---|---|---|---|---|---|---|
| Best option Denver San Diego | Outbound 03/28/26 direct F94989 02h 39min | Return 04/25/26 direct F94990 02h 41min |  Frontier Airlines |  | ? | $43 | |
| Denver San Diego | Outbound 03/28/26 direct F94989 02h 39min | Return 04/25/26 direct F94990 02h 41min | Frontier Airlines |  | $61 | ||
| Denver San Diego | Outbound 03/28/26 direct F94989 02h 39min | Return 04/25/26 direct F94990 02h 41min | Frontier Airlines |  | ? | $71 | |
| Denver San Diego | Outbound 03/28/26 direct F92817 02h 41min | Return 04/25/26 direct F94990 02h 41min | Frontier Airlines |  | $126 | ||
| Denver San Diego | Outbound 03/28/26 direct AS1428 02h 38min | Return 04/25/26 direct F94990 02h 41min |  Alaska Airlines |  | ? | $160 | |
| 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 found 3 days ago | |
| Denver San Diego | Outbound 03/28/26 direct AS0220 02h 41min | Return 04/25/26 direct AS1492 02h 25min | Alaska Airlines |  | ? | $202 | |
| Denver San Diego | Outbound 04/03/26 direct AS1428 02h 23min | Return 04/16/26 direct AS1429 02h 18min | Alaska Airlines |  | ? | $248 | |
| Denver San Diego | Outbound 04/03/26 direct HA7487 02h 23min | Return 04/16/26 direct HA7522 02h 22min |  Hawaiian Airlines | | ? | $265 | |
| Denver San Diego | Outbound 03/28/26 direct HA7521 02h 41min | Return 04/25/26 direct AS1492 02h 25min | Hawaiian Airlines |  | ? | $325 |
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 %