AirHint found the following cheapest return flights from Rio De Janeiro (GIG) to Porto (OPO) in September 2025 (see full year).

Return flights

18 Sep - 23 Sep	LATAM Airlines Group
23 Sep - 07 Oct	Ethiopian Airlines
22 Sep - 07 Oct	SWISS
29 Sep - 28 Oct	GOL Linhas Aéreas
05 Sep - 14 Sep	Copa
11 Sep - 23 Sep	Avianca
05 Sep - 18 Sep	Copa
29 Sep - 14 Oct	GOL Linhas Aéreas
09 Sep - 16 Sep	LATAM Airlines Group
29 Sep - 31 Oct	GOL Linhas Aéreas
30 Sep - 28 Oct	GOL Linhas Aéreas
29 Sep - 12 Oct	GOL Linhas Aéreas
25 Sep - 22 Oct	GOL Linhas Aéreas
28 Sep - 30 Oct	GOL Linhas Aéreas
25 Sep - 02 Oct	GOL Linhas Aéreas
11 Sep - 18 Sep	Avianca
05 Sep - 08 Sep	Copa
18 Sep - 26 Sep	LATAM Airlines Group
09 Sep - 14 Sep	LATAM Airlines Group
13 Sep - 18 Sep	LATAM Airlines Group

Also check the deals for one-way flights from Rio De Janeiro to Porto 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 Rio De Janeiro to Porto in September from $891

Return flights