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

Return flights

08 May - 17 May	Iberia
14 May - 11 Jun	Iberia
16 May - 06 Jun	Iberia
08 May - 09 Jun	Air Europa
12 May - 09 Jun	Air Europa
28 May - 18 Jun	Air Europa
03 May - 22 May	Royal Air Maroc
01 May - 27 May	Air Europa
05 May - 21 May	Air Europa
11 May - 27 May	Air Europa
11 May - 21 May	Air Europa
01 May - 20 May	Air Europa
09 May - 19 May	Air Europa
05 May - 26 May	Air Europa
06 May - 21 May	Air Europa
14 May - 04 Jun	Air Europa
23 May - 06 Jun	Iberia
25 May - 05 Jun	Iberia

Also check the deals for one-way flights from Porto 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 Porto to Sao Paulo in May from $626

Return flights