Cheapest return flights from Dallas-Fort Worth to Denver in September from $109

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

Return flights

13 Sep - 16 Sep Frontier Airlines direct
27 Sep - 30 Sep Frontier Airlines direct
09 Sep - 16 Sep Frontier Airlines direct
06 Sep - 06 Sep Frontier Airlines direct
27 Sep - 29 Sep Frontier Airlines direct
03 Sep - 07 Sep Frontier Airlines direct
19 Sep - 24 Sep Frontier Airlines direct
10 Sep - 14 Sep Frontier Airlines direct
26 Sep - 28 Sep Frontier Airlines direct
01 Sep - 04 Sep Frontier Airlines direct
27 Sep - 01 Oct American Airlines direct
01 Sep - 04 Oct Frontier Airlines direct
26 Sep - 03 Oct United

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

Skyscanner

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.

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