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

Return flights

26 Sep - 28 Sep	Spirit Airlines
22 Sep - 29 Sep	Frontier Airlines
02 Sep - 06 Sep	Spirit Airlines
23 Sep - 30 Sep	Frontier Airlines
05 Sep - 08 Sep	Spirit Airlines
04 Sep - 08 Sep	Frontier Airlines
02 Sep - 08 Sep	Spirit Airlines
12 Sep - 17 Sep	Frontier Airlines
26 Sep - 06 Oct	Frontier Airlines
12 Sep - 15 Sep	Frontier Airlines
26 Sep - 13 Oct	Spirit Airlines
13 Sep - 18 Sep	Spirit Airlines
26 Sep - 13 Oct	Delta	direct
26 Sep - 06 Oct	Delta	direct

Also check the deals for one-way flights from Salt Lake City to Guadalajara in September.

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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Cheapest return flights from Salt Lake City to Guadalajara in September from 213€

Return flights