| Outbound | Return | Airlines | Shop | Baggage | Price | ||
|---|---|---|---|---|---|---|---|
| Denver St. Louis | Outbound 02/13/26 direct F93302 02h 12min | Return 02/26/26 1 Stopover (ATL) F94474, F93599 11h 56min |  Frontier Airlines |  | $306 | ||
| Best option Denver St. Louis | Outbound 02/13/26 direct UA1315 02h 04min | Return 02/26/26 direct UA0551 02h 34min |  United Airlines |  | ? | $310 | |
| Denver St. Louis | Outbound 02/13/26 direct UA1422 02h 05min | Return 02/26/26 direct UA0551 02h 34min | United Airlines |  | ? | $321 | |
| Denver St. Louis | Outbound 02/13/26 direct F93302 02h 12min | Return 02/26/26 1 Stopover (ATL) F94474, F93599 11h 56min | Frontier Airlines |  | $322 | ||
| Denver St. Louis | Outbound 02/13/26 direct F93302 02h 12min | Return 02/26/26 1 Stopover (ATL) F94474, F93599 11h 56min | Frontier Airlines |  | $334 | ||
| Denver St. Louis | Outbound 04/03/26 direct UA1422 02h 09min | Return 04/16/26 direct UA1415 02h 34min | United Airlines | | ? | $390 found yesterday | |
| Denver St. Louis | Outbound 02/13/26 direct F93302 02h 12min | Return 02/26/26 1 Stopover (SEA) AS0314, AS0642 08h 44min | Frontier Airlines |  | ? | $406 | |
| Denver St. Louis | Outbound 02/13/26 1 Stopover (CLT) AA2511, AA2475 07h 07min | Return 02/26/26 1 Stopover (ORD) AA1699, AA2334 04h 56min |  American Airlines |  | ? | $464 | |
| Denver St. Louis | Outbound 02/13/26 1 Stopover (CLT) AA2511, AA2475 07h 07min | Return 02/26/26 1 Stopover (ORD) AA1699, AA2334 04h 56min | American Airlines |  | ? | $512 | |
| Denver St. Louis | Outbound 04/03/26 1 Stopover (LAS) F91765, F93108 08h 48min | Return 04/16/26 3 Stopovers (BOS, LHR, ORD) IB4924, IB4027, BA1546, BA2421 31h 14min | Frontier Airlines |  | ? | $1,464 found yesterday |
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 %