Cheapest return flights from Houston to Denver in December from $87

AirHint found the following cheapest return flights from Houston (HOU) to Denver (DEN) in December 2025 (see full year).

Return flights

06 Dec - 13 Dec Frontier Airlines direct
16 Dec - 16 Dec Frontier Airlines direct
06 Dec - 06 Dec Frontier Airlines direct
09 Dec - 11 Dec Frontier Airlines direct
09 Dec - 12 Dec Frontier Airlines direct
03 Dec - 06 Dec Frontier Airlines direct
10 Dec - 13 Dec Frontier Airlines direct
16 Dec - 17 Dec Frontier Airlines direct
07 Dec - 11 Dec Frontier Airlines direct
03 Dec - 10 Dec Frontier Airlines direct
18 Dec - 08 Jan Frontier Airlines direct
31 Dec - 07 Jan Frontier Airlines direct
30 Dec - 05 Jan Frontier Airlines
22 Dec - 05 Jan Frontier Airlines
17 Dec - 07 Jan Southwest Airlines direct
17 Dec - 11 Jan United direct
15 Dec - 06 Jan Southwest Airlines direct
24 Dec - 04 Jan Frontier Airlines
25 Dec - 01 Jan Frontier Airlines direct
25 Dec - 04 Jan Frontier Airlines direct

Also check the deals for one-way flights from Houston to Denver in December.

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