AirHint found the following cheapest return flights from Montreal (YUL) to Sao Paulo (GRU) in September 2026 (see full year).

Return flights

16 Sep - 29 Sep	Arajet
09 Sep - 24 Sep	Arajet
09 Sep - 01 Oct	Arajet
07 Sep - 15 Sep	Arajet
01 Sep - 22 Sep	LATAM Airlines Group
03 Sep - 22 Sep	LATAM Airlines Group
22 Sep - 29 Sep	Avianca
16 Sep - 23 Sep	Copa
24 Sep - 01 Oct	Copa
28 Sep - 05 Oct	Copa
30 Sep - 07 Oct	Copa
29 Sep - 15 Oct	Copa
15 Sep - 06 Oct	Copa
15 Sep - 07 Oct	Copa
15 Sep - 25 Sep	LATAM Airlines Group
16 Sep - 25 Sep	LATAM Airlines Group
08 Sep - 21 Sep	LATAM Airlines Group
30 Sep - 16 Oct	Delta
09 Sep - 07 Oct	Copa
23 Sep - 18 Oct	Copa

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

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 September from 446€

Return flights