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

Return flights

05 May - 14 May	Iberia
05 May - 13 May	Iberia
26 May - 09 Jun	Avianca
14 May - 21 May	LATAM Airlines Group
21 May - 28 May	LATAM Airlines Group
05 May - 26 May	Iberia
22 May - 05 Jun	Avianca
05 May - 21 May	LATAM Airlines Group
26 May - 25 Jun	British Airways
07 May - 10 May	Air Europa
03 May - 19 May	Azul Airlines
07 May - 14 May	Air Europa
26 May - 10 Jun	TAP
19 May - 10 Jun	TAP
18 May - 02 Jun	Avianca
29 May - 12 Jun	Avianca
07 May - 18 May	Air Europa
26 May - 19 Jun	Avianca
28 May - 16 Jun	Air Europa
26 May - 17 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 597€

Return flights