| Outbound | Return | Airlines | Shop | Baggage | Price | ||
|---|---|---|---|---|---|---|---|
| Best option Denver St. Louis | Outbound 06/20/25 direct F93302 02h 12min | Return 07/19/25 direct F94567 02h 31min |  Frontier Airlines |  | $88 | ||
| Denver St. Louis | Outbound 06/20/25 direct F93302 02h 12min | Return 07/19/25 direct F94567 02h 31min | Frontier Airlines |  | $93 | ||
| Denver St. Louis | Outbound 06/20/25 direct F93302 02h 12min | Return 07/19/25 direct F94567 02h 31min | Frontier Airlines |  | $96 | ||
| Denver St. Louis | Outbound 06/20/25 direct F93302 02h 12min | Return 07/19/25 direct F94567 02h 31min | Frontier Airlines |  | ? | $97 | |
| Denver St. Louis | Outbound 04/21/25 direct F93302 02h 06min | Return 05/19/25 1 Stopover (MCO) F92630, F91733 15h 31min | Frontier Airlines | | $98 | ||
| Denver St. Louis | Outbound 04/21/25 direct F93302 02h 06min | Return 05/19/25 1 Stopover (MCO) F92630, F91733 15h 31min | Frontier Airlines |  | $102 | ||
| Denver St. Louis | Outbound 04/21/25 direct F93302 02h 06min | Return 05/19/25 1 Stopover (MCO) F92630, F91733 15h 31min | Frontier Airlines | | ? | $103 | |
| Denver St. Louis | Outbound 04/21/25 direct F93302 02h 06min | Return 05/19/25 direct F94567 02h 29min | Frontier Airlines |  | ? | $106 | |
| Denver St. Louis | Outbound 04/21/25 direct F93302 02h 06min | Return 05/19/25 direct F94567 02h 29min | Frontier Airlines | | $116 | ||
| Denver St. Louis | Outbound 06/18/25 direct F93302 02h 12min | Return 07/15/25 1 Stopover (DFW) AA1363, AA0662 07h 15min | Frontier Airlines |  | ? | $190 |
Tips and tricks to help you find cheap flights from Denver to St. Louis
Favorite airline: Frontier Airlines
Flight tickets on the route Denver – St. Louis are most frequently booked with Frontier Airlines.
Frontier Airlines
62 %
United Airlines
38 %