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

Return flights

11 Dec - 14 Dec	Aeromexico
10 Dec - 22 Dec	Copa
11 Dec - 23 Dec	Aeromexico
13 Dec - 16 Dec	Avianca
25 Dec - 30 Dec	Aeromexico
11 Dec - 23 Dec	Avianca	direct
13 Dec - 16 Dec	Avianca	direct
27 Dec - 01 Jan	Avianca	direct
26 Dec - 31 Dec	Aeromexico
23 Dec - 30 Dec	Aeromexico
20 Dec - 17 Jan	Volaris
23 Dec - 27 Dec	Aeromexico

Also check the deals for one-way flights from Cancun to San Salvador 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 Cancun to San Salvador in December from $288

Return flights