AirHint found the following cheapest return flights from Guadalajara (GDL) to San Antonio (SAT) in September 2025 (see full year).

Return flights

25 Sep - 29 Sep	Aeromexico
29 Sep - 04 Oct	Volaris
26 Sep - 29 Sep	Aeromexico
25 Sep - 28 Sep	Aeromexico
24 Sep - 28 Sep	Aeromexico
26 Sep - 30 Sep	Aeromexico
23 Sep - 25 Sep	Viva
25 Sep - 29 Sep	Frontier Airlines	direct
26 Sep - 28 Sep	Aeromexico
17 Sep - 19 Sep	Viva
26 Sep - 30 Sep	Frontier Airlines	direct
29 Sep - 04 Oct	Frontier Airlines	direct

Also check the deals for one-way flights from Guadalajara to San Antonio 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 Guadalajara to San Antonio in September from $261

Return flights