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

Return flights

27 Aug - 03 Sep	Avianca
20 Aug - 03 Sep	Avianca
20 Aug - 10 Sep	Avianca
10 Aug - 22 Aug	Delta
13 Aug - 25 Aug	Delta
14 Aug - 17 Aug	Delta
15 Aug - 29 Aug	Delta
13 Aug - 29 Aug	Delta
18 Aug - 01 Sep	Delta
14 Aug - 29 Sep	Delta
22 Aug - 04 Sep	Delta
31 Aug - 05 Sep	Delta
06 Aug - 13 Aug	LATAM Airlines Group
10 Aug - 17 Aug	LATAM Airlines Group
12 Aug - 19 Aug	LATAM Airlines Group
14 Aug - 21 Aug	LATAM Airlines Group
18 Aug - 25 Aug	LATAM Airlines Group
26 Aug - 02 Sep	LATAM Airlines Group
28 Aug - 04 Sep	LATAM Airlines Group
29 Aug - 05 Sep	LATAM Airlines Group

Also check the deals for one-way flights from Montreal to Sao Paulo in August.

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 August from 485€

Return flights