| Outbound | Return | Airlines | Shop | Baggage | Price | ||
|---|---|---|---|---|---|---|---|
| Best option Denver St. Louis | Outbound 11/03/25 direct F93302 02h 07min | Return 11/12/25 direct F94567 02h 28min |  Frontier Airlines |  | ? | $119 | |
| Denver St. Louis | Outbound 11/03/25 direct F93302 02h 07min | Return 11/12/25 direct F94567 02h 28min | Frontier Airlines |  | $127 | ||
| Denver St. Louis | Outbound 11/03/25 direct F93302 02h 07min | Return 11/12/25 direct F94567 02h 28min | Frontier Airlines |  | $133 | ||
| Denver St. Louis | Outbound 11/03/25 direct F93302 02h 07min | Return 11/12/25 direct F94567 02h 28min | Frontier Airlines |  | $134 | ||
| Denver St. Louis | Outbound 10/10/25 direct F93302 02h 07min | Return 11/04/25 direct F94567 02h 28min | Frontier Airlines | | ? | $156 | |
| Denver St. Louis | Outbound 07/08/25 direct WN2813 02h 05min | Return 08/07/25 1 Stopover (ATL) F94474, F91449 07h 41min |  Southwest Airlines |  | ? | $189 | |
| Denver St. Louis | Outbound 10/18/25 direct UA5617 02h 13min | Return 11/17/25 direct UA2132 02h 20min |  United Airlines |  | ? | $214 | |
| Denver St. Louis | Outbound 09/04/25 direct UA0652 02h 03min | Return 09/28/25 1 Stopover (ORD) UA1156, UA2296 06h 48min | United Airlines | | ? | $216 | |
| Denver St. Louis | Outbound 07/02/25 direct F93302 02h 12min | Return 07/25/25 1 Stopover (CLT) AA0831, AA3156 07h 33min | Frontier Airlines | | ? | $217 | |
| Denver St. Louis | Outbound 10/18/25 direct UA5617 02h 13min | Return 11/17/25 direct UA1396 02h 22min | United Airlines |  | ? | $220 |
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 %