| Outbound | Return | Airlines | Shop | Baggage | Price | ||
|---|---|---|---|---|---|---|---|
| Best option Seattle-Tacoma Denver | Outbound 07/25/25 direct F91176 02h 55min | Return 08/17/25 direct F93405 03h 05min |  Frontier Airlines |  | $182 | ||
| Seattle-Tacoma Denver | Outbound 09/19/25 direct AS0642 02h 47min | Return 09/29/25 direct AS0615 03h 02min |  Alaska Airlines |  | ? | $187 | |
| Seattle-Tacoma Denver | Outbound 07/25/25 direct F91176 02h 55min | Return 08/17/25 direct F91175 03h 09min | Frontier Airlines |  | $193 | ||
| Seattle-Tacoma Denver | Outbound 09/19/25 direct AS0642 02h 47min | Return 09/29/25 direct AS0735 03h 03min | Alaska Airlines |  | ? | $201 | |
| Seattle-Tacoma Denver | Outbound 07/25/25 direct F91176 02h 55min | Return 08/17/25 direct F91175 03h 09min | Frontier Airlines |  | $204 | ||
| Seattle-Tacoma Denver | Outbound 09/19/25 direct HA6652 02h 47min | Return 09/29/25 direct HA4801 03h 03min |  Hawaiian Airlines | | $207 | ||
| Seattle-Tacoma Denver | Outbound 07/25/25 direct F93406 02h 49min | Return 08/17/25 direct F93405 03h 05min | Frontier Airlines |  | ? | $229 | |
| Seattle-Tacoma Denver | Outbound 09/19/25 direct UA1218 02h 40min | Return 09/29/25 direct UA2651 02h 58min |  United Airlines |  | ? | $242 | |
| Seattle-Tacoma Denver | Outbound 09/19/25 direct AS0642 02h 47min | Return 09/29/25 direct HA4820 03h 02min | Alaska Airlines |  | ? | $328 | |
| Seattle-Tacoma Denver | Outbound 07/25/25 direct F91176 02h 55min | Return 08/17/25 direct F91175 03h 09min | Frontier Airlines |  | ? | $653 |
Tips and tricks to help you find cheap flights from Seattle Tacoma to Denver
Favorite airline: Frontier Airlines
84 % of bookings on this flight route are made with Frontier Airlines, Alaska Airlines and Delta.
Frontier Airlines
46 %
Alaska Airlines
23 %
Delta
15 %