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

Return flights

03 Dec - 08 Dec	Avianca
11 Dec - 30 Jan	WestJet
08 Dec - 17 Jan	Delta
11 Dec - 31 Dec	WestJet
11 Dec - 09 Jan	Delta
13 Dec - 19 Jan	Avianca
17 Dec - 16 Jan	WestJet
16 Dec - 11 Jan	WestJet
11 Dec - 05 Jan	WestJet
13 Dec - 13 Jan	Avianca
01 Dec - 01 Jan	Avianca
17 Dec - 12 Jan	WestJet
10 Dec - 17 Dec	LATAM Airlines Group
15 Dec - 22 Dec	Avianca
08 Dec - 29 Dec	Avianca
05 Dec - 26 Dec	Arajet
24 Dec - 30 Dec	LATAM Airlines Group
10 Dec - 26 Dec	Avianca
22 Dec - 31 Dec	LATAM Airlines Group
08 Dec - 29 Dec	Air Canada	direct

Also check the deals for one-way flights from Sao Paulo to Montreal 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 Sao Paulo to Montreal in December from $604

Return flights