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

Return flights

20 Dec - 24 Jan	Viva	direct
05 Dec - 12 Dec	Viva	direct
05 Dec - 14 Dec	Viva	direct
05 Dec - 08 Dec	Viva	direct
12 Dec - 14 Dec	Viva	direct
05 Dec - 09 Dec	Viva	direct
15 Dec - 31 Dec	Viva	direct
12 Dec - 31 Dec	Viva	direct
20 Dec - 31 Dec	Viva	direct
17 Dec - 31 Dec	Viva	direct
22 Dec - 31 Dec	Viva	direct
20 Dec - 07 Jan	Viva
17 Dec - 07 Jan	Viva
22 Dec - 07 Jan	Viva
27 Dec - 02 Jan	Viva	direct
24 Dec - 07 Jan	Viva
23 Dec - 07 Jan	Viva
19 Dec - 07 Jan	Viva
29 Dec - 07 Jan	Viva
28 Dec - 07 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 187€

Return flights