AirHint found the following cheapest return flights from Mexico City (MEX) to San Antonio (SAT) in December 2025 (see full year).

Return flights

05 Dec - 08 Dec	Viva
11 Dec - 31 Dec	Viva
04 Dec - 06 Dec	Viva
09 Dec - 09 Jan	Viva	direct
08 Dec - 08 Dec	Volaris	direct
09 Dec - 09 Dec	Viva	direct
11 Dec - 31 Dec	Viva	direct
03 Dec - 08 Dec	Viva	direct
05 Dec - 08 Dec	Viva	direct
04 Dec - 09 Dec	Viva	direct
04 Dec - 06 Dec	Viva	direct
15 Dec - 15 Jan	Volaris	direct
18 Dec - 12 Jan	Viva
15 Dec - 13 Jan	Viva
03 Dec - 31 Jan	Viva	direct
15 Dec - 16 Jan	Viva
25 Dec - 12 Jan	Viva
25 Dec - 13 Jan	Viva
24 Dec - 12 Jan	Viva
24 Dec - 13 Jan	Viva

Also check the deals for one-way flights from Mexico City to San Antonio in December.

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 Mexico City to San Antonio in December from $210

Return flights