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

Return flights

14 May - 21 May	British Airways
11 May - 28 May	British Airways
12 May - 21 May	British Airways
12 May - 25 May	British Airways
02 May - 30 May	Iberia
08 May - 20 May	Iberia
09 May - 21 May	Iberia
01 May - 16 May	Iberia
02 May - 16 May	Iberia
07 May - 23 May	Iberia
17 May - 01 Jun	Air Europa

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 $713

Return flights