Cheapest return flights from Sao Paulo to Porto in September from $763

AirHint found the following cheapest return flights from Sao Paulo (GRU) to Porto (OPO) in September 2025 (see full year).

Return flights

26 Sep - 13 Oct TAAG Angola Airlines
15 Sep - 25 Sep Ethiopian Airlines
15 Sep - 30 Sep Ethiopian Airlines
15 Sep - 22 Sep Ethiopian Airlines
22 Sep - 02 Oct Ethiopian Airlines
24 Sep - 09 Oct Ethiopian Airlines
24 Sep - 23 Oct Ethiopian Airlines
24 Sep - 10 Oct TAAG Angola Airlines
15 Sep - 06 Oct Ethiopian Airlines
28 Sep - 10 Oct TAAG Angola Airlines
28 Sep - 03 Oct TAAG Angola Airlines
28 Sep - 12 Oct TAAG Angola Airlines
14 Sep - 22 Sep Ethiopian Airlines
14 Sep - 30 Sep Ethiopian Airlines
15 Sep - 27 Sep Ethiopian Airlines
21 Sep - 02 Oct Ethiopian Airlines
14 Sep - 29 Sep Ethiopian Airlines
16 Sep - 23 Sep Copa
12 Sep - 23 Sep Copa
13 Sep - 16 Sep Copa

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

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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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