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

Return flights

20 Sep - 13 Oct	Ethiopian Airlines
30 Sep - 06 Oct	Ethiopian Airlines
16 Sep - 14 Oct	Ethiopian Airlines
26 Sep - 14 Oct	Air France
19 Sep - 22 Sep	Air Europa
08 Sep - 12 Sep	Copa
24 Sep - 14 Oct	Air France
07 Sep - 14 Sep	Copa
08 Sep - 23 Sep	Copa
18 Sep - 23 Sep	Copa
29 Sep - 20 Oct	Azul Airlines
28 Sep - 13 Oct	LATAM Airlines Group
16 Sep - 23 Sep	Copa
29 Sep - 14 Oct	KLM
15 Sep - 28 Oct	Copa
01 Sep - 09 Sep	LATAM Airlines Group
18 Sep - 24 Sep	Copa
26 Sep - 06 Oct	Air France
08 Sep - 22 Sep	LATAM Airlines Group
11 Sep - 18 Sep	Iberia

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 797€

Return flights