| Outbound | Return | Airlines | Shop | Baggage | Price | ||
|---|---|---|---|---|---|---|---|
| Best option Denver Seattle-Tacoma | Outbound 03/28/26 direct AS0643 03h 10min | Return 04/25/26 direct F91176 02h 52min |  Alaska Airlines |  | $184 | ||
| Denver Seattle-Tacoma | Outbound 03/28/26 direct AS0643 03h 10min | Return 04/25/26 direct AS0602 02h 49min | Alaska Airlines |  | ? | $186 | |
| Denver Seattle-Tacoma | Outbound 03/28/26 direct AS0643 03h 10min | Return 04/25/26 direct F91176 02h 52min | Alaska Airlines |  | ? | $195 | |
| Denver Seattle-Tacoma | Outbound 03/28/26 direct AS0682 03h 06min | Return 04/25/26 direct F91176 02h 52min | Alaska Airlines |  | ? | $205 | |
| Denver Seattle-Tacoma | Outbound 05/16/26 direct F94545 03h 12min | Return 05/29/26 direct AS1332 02h 57min |  Frontier Airlines | | $210 | ||
| Denver Seattle-Tacoma | Outbound 05/16/26 direct F94545 03h 12min | Return 05/29/26 direct AS0642 02h 52min | Frontier Airlines | | ? | $221 | |
| Denver Seattle-Tacoma | Outbound 03/28/26 direct HA4869 03h 06min | Return 04/25/26 direct F91176 02h 52min |  Hawaiian Airlines |  | $222 | ||
| Denver Seattle-Tacoma | Outbound 03/28/26 direct AS0643 03h 10min | Return 04/25/26 direct AS0682 02h 49min | Alaska Airlines |  | ? | $224 | |
| Denver Seattle-Tacoma | Outbound 07/26/26 direct AS0643 03h 05min | Return 08/05/26 direct F93406 02h 58min | Alaska Airlines |  | ? | $228 | |
| Denver Seattle-Tacoma | Outbound 07/26/26 direct F94545 03h 10min | Return 08/05/26 direct F93406 02h 58min | Frontier Airlines | | ? | $240 |
Tips and tricks to help you find cheap flights from Denver to Seattle Tacoma
Favorite airline: Frontier Airlines
Frontier Airlines is the most popular airline for flights from Denver to Seattle-Tacoma.
Frontier Airlines
50 %
Delta
22 %
United Airlines
17 %