Cheapest return flights from St. Louis to Denver in February from $63

AirHint found the following cheapest return flights from St. Louis (STL) to Denver (DEN) in February 2026 (see full year).

Return flights

28 Feb - 02 Mar Frontier Airlines direct
06 Feb - 08 Feb Frontier Airlines direct
06 Feb - 09 Feb Frontier Airlines direct
09 Feb - 11 Feb Frontier Airlines direct
28 Feb - 03 Mar Frontier Airlines
27 Feb - 02 Mar Frontier Airlines direct
18 Feb - 23 Feb Frontier Airlines
26 Feb - 02 Mar Frontier Airlines
11 Feb - 14 Feb Frontier Airlines direct
27 Feb - 01 Mar Frontier Airlines
06 Feb - 10 Feb Frontier Airlines
10 Feb - 11 Feb Frontier Airlines
05 Feb - 09 Feb Frontier Airlines
05 Feb - 08 Feb Frontier Airlines
07 Feb - 07 Feb Frontier Airlines
13 Feb - 01 Mar Frontier Airlines
28 Feb - 03 Mar Southwest Airlines direct
26 Feb - 02 Mar Southwest Airlines direct
13 Feb - 01 Mar United direct
27 Feb - 01 Mar United direct

Also check the deals for one-way flights from St. Louis to Denver in February.

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