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

Return flights

06 May - 14 May	Iberia
09 May - 03 Jun	Iberia
04 May - 18 May	Iberia
05 May - 19 May	Iberia
14 May - 21 May	Air Europa
22 May - 31 May	Iberia
05 May - 12 May	Iberia
19 May - 26 May	Iberia
02 May - 20 May	Air Europa
19 May - 15 Jun	Iberia
24 May - 02 Jun	Iberia
28 May - 12 Jun	Iberia
26 May - 02 Jun	Iberia
19 May - 10 Jun	Iberia
19 May - 17 Jun	Iberia
06 May - 16 May	Iberia
09 May - 23 May	Air Europa
07 May - 09 Jun	Iberia
29 May - 11 Jun	Iberia
19 May - 30 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 554€

Return flights