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

Return flights

13 May - 20 May	Copa
20 May - 27 May	Copa
06 May - 13 May	Air Canada	direct
13 May - 20 May	Air Canada	direct
20 May - 27 May	Air Canada	direct
01 May - 08 May	LATAM Airlines Group
12 May - 19 May	Copa
14 May - 21 May	Copa
19 May - 26 May	Copa
25 May - 01 Jun	Copa
27 May - 03 Jun	Air Canada	direct
04 May - 11 May	Air Canada
31 May - 07 Jun	Copa
29 May - 05 Jun	Copa
25 May - 05 Jun	Air Canada

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

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 May from $550

Return flights