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

Return flights

11 Dec - 23 Jan	Arajet
11 Dec - 24 Jan	Arajet
01 Dec - 08 Dec	Copa
03 Dec - 08 Dec	Copa
03 Dec - 10 Dec	Copa
10 Dec - 08 Jan	Avianca
12 Dec - 17 Jan	Avianca
08 Dec - 17 Jan	Avianca
11 Dec - 30 Jan	Arajet
11 Dec - 31 Dec	Arajet
09 Dec - 07 Jan	Delta
10 Dec - 06 Jan	Delta
01 Dec - 30 Jan	Copa
13 Dec - 19 Jan	LATAM Airlines Group
09 Dec - 15 Dec	LATAM Airlines Group
23 Dec - 31 Dec	LATAM Airlines Group
24 Dec - 31 Dec	LATAM Airlines Group
05 Dec - 13 Dec	Arajet
05 Dec - 12 Dec	Copa
22 Dec - 31 Dec	LATAM Airlines Group

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 558€

Return flights