AirHint found the following cheapest return flights from San Francisco (SFO) to Mexico City (MEX) in January 2026 (see full year).

Return flights

14 Jan - 21 Jan	Hawaiian Airlines
21 Jan - 25 Jan	Frontier Airlines
17 Jan - 22 Jan	Frontier Airlines
23 Jan - 26 Jan	Frontier Airlines
13 Jan - 16 Jan	Hawaiian Airlines
11 Jan - 18 Jan	Frontier Airlines
17 Jan - 31 Jan	Frontier Airlines
16 Jan - 21 Jan	Frontier Airlines
21 Jan - 01 Feb	Frontier Airlines
23 Jan - 25 Jan	Aeromexico	direct
22 Jan - 26 Jan	Aeromexico	direct
03 Jan - 03 Feb	Aeromexico	direct
03 Jan - 01 Feb	Aeromexico	direct
04 Jan - 01 Feb	Delta	direct
05 Jan - 05 Feb	United	direct
21 Jan - 01 Feb	United	direct
04 Jan - 05 Feb	Aeromexico
04 Jan - 05 Feb	United	direct

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

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 San Francisco to Mexico City in January from 268€

Return flights