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

Return flights

09 Dec - 16 Dec	Air Transat
01 Dec - 08 Dec	Avianca
03 Dec - 10 Dec	Avianca
04 Dec - 18 Dec	Avianca	direct
04 Dec - 11 Dec	Avianca	direct
09 Dec - 16 Dec	Avianca	direct
11 Dec - 18 Dec	Avianca	direct
02 Dec - 09 Dec	Avianca
06 Dec - 13 Dec	Avianca
07 Dec - 14 Dec	Avianca
11 Dec - 01 Jan	Avianca
30 Dec - 11 Jan	Avianca
13 Dec - 05 Jan	Avianca
15 Dec - 05 Jan	Avianca
15 Dec - 06 Jan	United
12 Dec - 02 Jan	Avianca
30 Dec - 06 Jan	United
22 Dec - 19 Jan	Air Transat	direct
29 Dec - 09 Jan	United
30 Dec - 06 Jan	Avianca	direct

Also check the deals for one-way flights from Montreal 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 Montreal to San Salvador in December from 351€

Return flights