AirHint found the following cheapest return flights from Dallas-Fort Worth (DFW) to Denver (DEN) in December 2025 (see full year).

Return flights

15 Dec - 15 Dec	Frontier Airlines	direct
11 Dec - 14 Dec	Frontier Airlines	direct
31 Dec - 04 Jan	United	direct
30 Dec - 03 Jan	United	direct
21 Dec - 27 Dec	United	direct
27 Dec - 03 Jan	Frontier Airlines	direct
26 Dec - 04 Jan	United	direct
30 Dec - 06 Jan	Alaska Airlines

Also check the deals for one-way flights from Dallas-Fort Worth to Denver in December.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Denver

Cheap car rent in Denver

Cheapest return flights from Dallas-Fort Worth to Denver in December from $164

Return flights