Cheapest return flights from Denver to Salt Lake City in September from $68

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

Return flights

23 Sep - 30 Sep Frontier Airlines direct
30 Sep - 02 Oct Frontier Airlines direct
29 Sep - 30 Sep Frontier Airlines direct
23 Sep - 25 Sep Frontier Airlines direct
26 Sep - 28 Sep Frontier Airlines
25 Sep - 28 Sep Frontier Airlines
22 Sep - 29 Sep Frontier Airlines
22 Sep - 22 Sep Frontier Airlines
19 Sep - 22 Sep Frontier Airlines
22 Sep - 22 Sep Frontier Airlines direct
25 Sep - 28 Sep Delta direct

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