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

Return flights

11 Dec - 30 Jan	Arajet
11 Dec - 09 Jan	Arajet
13 Dec - 19 Jan	Air Canada
15 Dec - 31 Dec	WestJet
16 Dec - 16 Jan	Arajet
15 Dec - 05 Jan	Delta
11 Dec - 02 Jan	Arajet
01 Dec - 01 Jan	Delta
05 Dec - 02 Jan	Avianca
15 Dec - 01 Jan	Delta
24 Dec - 31 Dec	Arajet
15 Dec - 31 Dec	Air Canada	direct
22 Dec - 13 Jan	Air Canada	direct
24 Dec - 31 Dec	Air Canada	direct
04 Dec - 11 Dec	Air Canada	direct
05 Dec - 20 Dec	United
19 Dec - 29 Dec	United
19 Dec - 29 Dec	Air Canada	direct
05 Dec - 20 Dec	GOL Linhas Aéreas	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 $574

Return flights