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

Return flights

29 May - 14 Jun	Iberia
26 May - 10 Jun	Iberia
31 May - 29 Jun	Iberia
31 May - 28 Jun	Iberia
11 May - 13 Jun	Iberia
27 May - 11 Jun	Iberia
30 May - 27 Jun	Iberia
03 May - 29 May	Royal Air Maroc
02 May - 21 May	Iberia
02 May - 30 May	TAP
22 May - 25 May	TAP
23 May - 26 May	TAP
05 May - 16 May	KLM

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 $622

Return flights