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

Return flights

02 Dec - 25 Dec	Avianca	direct
02 Dec - 09 Dec	Avianca	direct
04 Dec - 11 Dec	Avianca	direct
06 Dec - 13 Dec	Avianca	direct
09 Dec - 16 Dec	Air Transat
01 Dec - 08 Dec	Porter Airlines (Canada) Ltd
03 Dec - 10 Dec	Porter Airlines (Canada) Ltd
11 Dec - 18 Dec	Avianca
02 Dec - 15 Dec	United
08 Dec - 15 Dec	Porter Airlines (Canada) Ltd
23 Dec - 01 Jan	Avianca	direct
25 Dec - 01 Jan	Avianca
27 Dec - 25 Jan	Avianca
30 Dec - 12 Jan	Air Canada
29 Dec - 12 Jan	Avianca
16 Dec - 12 Jan	Avianca
26 Dec - 24 Jan	Avianca
22 Dec - 01 Jan	WestJet
22 Dec - 19 Jan	Delta
12 Dec - 02 Jan	Avianca

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 $416

Return flights