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	WestJet
02 Dec - 09 Dec	Avianca	direct
04 Dec - 11 Dec	Avianca	direct
02 Dec - 11 Dec	Avianca	direct
06 Dec - 13 Dec	Avianca	direct
03 Dec - 10 Dec	WestJet
05 Dec - 25 Dec	Porter Airlines (Canada) Ltd
06 Dec - 15 Dec	Avianca
01 Dec - 08 Dec	Porter Airlines (Canada) Ltd
11 Dec - 18 Dec	Avianca
09 Dec - 12 Jan	WestJet
25 Dec - 01 Jan	United
15 Dec - 11 Jan	Avianca
15 Dec - 12 Jan	Avianca
15 Dec - 10 Jan	Avianca
26 Dec - 19 Jan	Air Transat	direct
25 Dec - 12 Jan	United
30 Dec - 12 Jan	WestJet
12 Dec - 09 Jan	Avianca
28 Dec - 08 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 376€

Return flights