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

Return flights

19 Sep - 26 Sep	Volaris	direct
01 Sep - 07 Sep	Frontier Airlines	direct
04 Sep - 07 Sep	Frontier Airlines	direct
12 Sep - 15 Sep	Frontier Airlines	direct
12 Sep - 16 Sep	United
12 Sep - 16 Sep	Volaris	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 $256

Return flights