Cheapest return flights from San Francisco to Mexico City in December from $311

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

Return flights

09 Dec - 12 Dec Frontier Airlines
03 Dec - 08 Dec Frontier Airlines
04 Dec - 06 Dec Frontier Airlines
06 Dec - 18 Dec Frontier Airlines
04 Dec - 09 Dec Frontier Airlines
09 Dec - 16 Dec Frontier Airlines
08 Dec - 11 Dec Frontier Airlines
13 Dec - 17 Dec Frontier Airlines
10 Dec - 13 Dec Frontier Airlines
10 Dec - 16 Dec Frontier Airlines
14 Dec - 13 Jan Frontier Airlines
24 Dec - 21 Jan Frontier Airlines
10 Dec - 06 Jan Frontier Airlines
31 Dec - 07 Jan Aeromexico
23 Dec - 09 Jan Frontier Airlines
31 Dec - 06 Jan Frontier Airlines
16 Dec - 23 Jan Frontier Airlines
22 Dec - 09 Jan Hawaiian Airlines
22 Dec - 07 Jan Frontier Airlines
31 Dec - 07 Jan Aeromexico direct

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

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