Cheapest return flights from Salt Lake City to Denver in September from $78

AirHint found the following cheapest return flights from Salt Lake City (SLC) to Denver (DEN) in September 2025 (see full year).

Return flights

03 Sep - 04 Sep Frontier Airlines direct
03 Sep - 09 Sep Frontier Airlines direct
18 Sep - 21 Sep Frontier Airlines direct
11 Sep - 15 Sep Frontier Airlines direct
25 Sep - 30 Sep Frontier Airlines direct
26 Sep - 30 Sep Frontier Airlines direct
06 Sep - 07 Sep Frontier Airlines direct
06 Sep - 06 Sep Frontier Airlines
06 Sep - 06 Sep Delta direct

Also check the deals for one-way flights from Salt Lake City 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.

Book a cheap hotel in Denver

Cheap car rent in Denver

Feel free to contact us with any feedback or request another flight research.