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

Return flights

05 May - 26 May	Air Europa
14 May - 27 May	Royal Air Maroc
05 May - 21 May	Air Europa
21 May - 09 Jun	Air Europa
15 May - 05 Jun	Air Europa
29 May - 17 Jun	Air Europa
05 May - 19 May	Air Europa
01 May - 31 May	Royal Air Maroc
08 May - 17 May	Royal Air Maroc
03 May - 17 May	Royal Air Maroc
07 May - 19 May	Air Europa
10 May - 28 May	Air Europa
12 May - 30 May	Air Europa
02 May - 30 Jun	Air Europa
30 May - 15 Jun	Iberia
12 May - 09 Jun	Ryanair
28 May - 14 Jun	Iberia
31 May - 25 Jun	TAP
29 May - 14 Jun	TAP

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 $599

Return flights