Cheapest return flights from Salt Lake City to Denver in September from $51

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

Return flights

30 Sep - 07 Oct Frontier Airlines direct
30 Sep - 01 Oct Frontier Airlines direct
28 Sep - 01 Oct Frontier Airlines
25 Sep - 27 Sep Frontier Airlines direct
25 Sep - 29 Sep Frontier Airlines direct
28 Sep - 29 Sep Frontier Airlines
27 Sep - 28 Sep Frontier Airlines
26 Sep - 28 Sep Frontier Airlines
28 Sep - 29 Sep Frontier Airlines direct
19 Sep - 21 Sep Frontier Airlines
28 Sep - 01 Oct Delta direct
19 Sep - 21 Sep Frontier Airlines direct
27 Sep - 28 Sep United direct
26 Sep - 28 Sep United 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.

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