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

Return flights

03 Sep - 09 Sep	Arajet
03 Sep - 16 Sep	Arajet
01 Sep - 11 Sep	Arajet
03 Sep - 29 Sep	Arajet
03 Sep - 17 Sep	Arajet
01 Sep - 29 Sep	Arajet
24 Sep - 08 Oct	Arajet
17 Sep - 24 Sep	Arajet
23 Sep - 07 Oct	Copa
29 Sep - 13 Oct	Copa
30 Sep - 14 Oct	Copa
29 Sep - 06 Oct	Copa
24 Sep - 06 Oct	Copa
22 Sep - 06 Oct	Arajet
28 Sep - 12 Oct	Copa
21 Sep - 05 Oct	Arajet
07 Sep - 14 Sep	Delta
09 Sep - 16 Sep	Delta
15 Sep - 22 Sep	Delta
26 Sep - 10 Oct	Delta

Also check the deals for one-way flights from Sao Paulo to Montreal 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 Sao Paulo to Montreal in September from $458

Return flights