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

Return flights

02 Dec - 16 Dec	Avianca	direct
02 Dec - 23 Dec	Avianca	direct
02 Dec - 11 Dec	Avianca	direct
02 Dec - 09 Dec	Avianca	direct
03 Dec - 11 Dec	Avianca
12 Dec - 13 Dec	Avianca
03 Dec - 24 Dec	United
09 Dec - 30 Dec	Avianca
10 Dec - 31 Dec	Avianca
10 Dec - 24 Dec	Avianca
11 Dec - 01 Jan	Avianca
24 Dec - 14 Jan	Avianca
25 Dec - 15 Jan	Avianca
29 Dec - 19 Jan	Porter Airlines (Canada) Ltd
29 Dec - 16 Jan	Porter Airlines (Canada) Ltd
22 Dec - 12 Jan	Delta
30 Dec - 12 Jan	Delta
28 Dec - 10 Jan	Porter Airlines (Canada) Ltd
29 Dec - 19 Jan	Air Transat	direct
24 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 341€

Return flights