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

Return flights

01 Dec - 08 Dec	Arajet
05 Dec - 12 Dec	Arajet
08 Dec - 15 Dec	Arajet
03 Dec - 15 Dec	Arajet
03 Dec - 10 Dec	Arajet
02 Dec - 09 Dec	Copa
04 Dec - 11 Dec	Copa
06 Dec - 13 Dec	LATAM Airlines Group
07 Dec - 14 Dec	LATAM Airlines Group
09 Dec - 16 Dec	Copa
22 Dec - 22 Jan	Arajet
10 Dec - 07 Jan	Arajet
24 Dec - 16 Jan	LATAM Airlines Group
22 Dec - 23 Jan	Delta
31 Dec - 07 Jan	LATAM Airlines Group
22 Dec - 23 Jan	Air Canada	direct
24 Dec - 11 Jan	Delta
17 Dec - 04 Jan	Hahn Air Technologies
10 Dec - 07 Jan	Air Canada	direct
31 Dec - 07 Jan	Air Canada	direct

Also check the deals for one-way flights from Montreal to Sao Paulo 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 Sao Paulo in December from 505€

Return flights