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

Return flights

11 Sep - 14 Oct	Royal Air Maroc
11 Sep - 23 Sep	Royal Air Maroc
21 Sep - 29 Sep	Iberia
21 Sep - 01 Oct	Iberia
05 Sep - 06 Oct	Iberia
24 Sep - 23 Oct	Iberia
22 Sep - 26 Oct	Iberia
02 Sep - 12 Oct	Iberia
17 Sep - 01 Oct	Air Europa
15 Sep - 02 Oct	Air Europa
07 Sep - 29 Sep	Air Europa
18 Sep - 09 Oct	Air Europa
24 Sep - 01 Oct	Iberia
01 Sep - 30 Sep	Iberia
18 Sep - 20 Sep	Royal Air Maroc
20 Sep - 28 Sep	Iberia
07 Sep - 22 Sep	Iberia
01 Sep - 15 Sep	Iberia
12 Sep - 24 Sep	Iberia
01 Sep - 08 Sep	Ryanair

Also check the deals for one-way flights from Porto to Sao Paulo in September.

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 September from 513€

Return flights