| Outbound | Return | Airlines | Shop | Baggage | Price | ||
|---|---|---|---|---|---|---|---|
| Denver St. Louis | Outbound 11/09/25 direct F93302 02h 07min | Return 12/07/25 1 Stopover (ATL) DL1393, DL0956 06h 14min |  Frontier Airlines |  | ? | $135 found 2 days ago | |
| Best option Denver St. Louis | Outbound 09/25/25 direct F93302 02h 06min | Return 10/05/25 direct F94567 02h 25min | Frontier Airlines |  | $138 | ||
| Denver St. Louis | Outbound 11/09/25 3 Stopovers (MSP, BNA, JBR) SY0652, SY0633, 9X0459, 9X0454 32h 22min | Return 12/07/25 3 Stopovers (FLL, DFW, CVN) NK2158, NK2555, KG5411, KG5414 26h 20min |   Sun Country Airlines, Southern Airways Express |  | $505 found 2 days ago | ||
| Denver St. Louis | Outbound 09/25/25 direct F93302 02h 06min | Return 10/05/25 direct F94567 02h 25min | Frontier Airlines | | $141 | ||
| Denver St. Louis | Outbound 09/25/25 direct F93302 02h 06min | Return 10/05/25 direct F94567 02h 25min | Frontier Airlines | | ? | $161 | |
| Denver St. Louis | Outbound 09/25/25 direct F93302 02h 06min | Return 10/05/25 direct F94567 02h 25min | Frontier Airlines |  | $162 | ||
| Denver St. Louis | Outbound 09/25/25 direct F93302 02h 06min | Return 10/05/25 direct F94567 02h 25min | Frontier Airlines |  | ? | $179 | |
| Denver St. Louis | Outbound 11/09/25 direct F93302 02h 07min | Return 12/07/25 1 Stopover (MCO) F91632, F93311 14h 19min | Frontier Airlines | | ? | $180 found 2 days ago | |
| Denver St. Louis | Outbound 11/09/25 direct F93302 02h 07min | Return 12/07/25 1 Stopover (LAS) F93107, F91994 07h 08min | Frontier Airlines | | $224 found 2 days ago | ||
| Denver St. Louis | Outbound 11/09/25 direct F93302 02h 07min | Return 12/07/25 1 Stopover (LAS) F93107, F91994 07h 08min | Frontier Airlines | | $225 found 2 days ago |
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 %