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

Return flights

20 May - 31 May	Avianca
20 May - 27 May	Avianca
04 May - 11 May	Avianca
06 May - 13 May	Avianca
11 May - 18 May	Avianca
18 May - 25 May	Avianca
13 May - 20 May	Avianca
24 May - 31 May	Avianca
20 May - 03 Jun	Delta
19 May - 03 Jun	Delta
19 May - 04 Jun	Delta
01 May - 08 May	Avianca
03 May - 10 May	Avianca
27 May - 03 Jun	Avianca
18 May - 03 Jun	Avianca
19 May - 03 Jun	Air Canada	direct
19 May - 04 Jun	Air Canada	direct
28 May - 04 Jun	Air Transat
01 May - 01 Jun	Arajet
26 May - 02 Jun	Copa

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 426€

Return flights