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

Return flights

07 Dec - 14 Dec	Delta
03 Dec - 15 Dec	Delta
03 Dec - 14 Dec	Delta
02 Dec - 13 Dec	Delta
03 Dec - 13 Dec	Delta
03 Dec - 10 Dec	Delta
06 Dec - 13 Dec	LATAM Airlines Group
08 Dec - 15 Dec	LATAM Airlines Group
10 Dec - 17 Dec	LATAM Airlines Group
05 Dec - 12 Dec	LATAM Airlines Group
25 Dec - 18 Jan	Air Transat
27 Dec - 11 Jan	Air Canada
24 Dec - 17 Jan	United
28 Dec - 12 Jan	Air Canada
31 Dec - 07 Jan	Air Canada
12 Dec - 05 Jan	Porter Airlines (Canada) Ltd
25 Dec - 18 Jan	Air Canada	direct
20 Dec - 18 Jan	Air Canada
21 Dec - 17 Jan	WestJet
26 Dec - 17 Jan	United

Also check the deals for one-way flights from Montreal to Santiago 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 Santiago in December from 441€

Return flights