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

Return flights

09 Dec - 13 Dec	Avianca	direct
23 Dec - 01 Jan	Aeromexico	direct
17 Dec - 06 Jan	Aeromexico	direct
03 Dec - 03 Dec	Avianca
04 Dec - 08 Dec	Avianca
05 Dec - 11 Dec	Avianca	direct
26 Dec - 01 Jan	Avianca	direct
03 Dec - 03 Dec	Avianca	direct
03 Dec - 07 Dec	Avianca
04 Dec - 10 Dec	Avianca
05 Dec - 10 Dec	Avianca	direct
05 Dec - 12 Dec	Avianca	direct
19 Dec - 27 Dec	Aeromexico	direct
26 Dec - 03 Jan	Avianca	direct
27 Dec - 01 Jan	Avianca	direct
29 Dec - 02 Jan	Avianca
22 Dec - 04 Jan	Avianca	direct
19 Dec - 04 Jan	Aeromexico
18 Dec - 02 Jan	Avianca
29 Dec - 02 Jan	Avianca	direct

Also check the deals for one-way flights from San Salvador to Mexico City 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 San Salvador to Mexico City in December from 231€

Return flights