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

Return flights

01 May - 13 May	Iberia
14 May - 02 Jun	Iberia
01 May - 10 May	LATAM Airlines Group
06 May - 21 May	Royal Air Maroc
15 May - 28 May	Royal Air Maroc
10 May - 24 May	Royal Air Maroc
15 May - 29 May	Royal Air Maroc
17 May - 23 May	Royal Air Maroc
15 May - 19 Jun	Royal Air Maroc
31 May - 19 Jun	Royal Air Maroc
17 May - 31 May	Royal Air Maroc
10 May - 20 May	British Airways
01 May - 17 May	Iberia
25 May - 09 Jun	Iberia
14 May - 16 Jun	Iberia
14 May - 18 Jun	Iberia
14 May - 05 Jun	Iberia
05 May - 02 Jun	Iberia
19 May - 16 Jun	Iberia
19 May - 17 Jun	Iberia

Also check the deals for one-way flights from Sao Paulo to Porto 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 Sao Paulo to Porto in May from 611€

Return flights