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

Return flights

21 Aug - 03 Sep	KLM
19 Aug - 26 Aug	KLM
16 Aug - 23 Aug	KLM
17 Aug - 24 Aug	KLM
16 Aug - 05 Sep	British Airways
25 Aug - 02 Sep	Copa
21 Aug - 28 Aug	KLM
21 Aug - 01 Sep	KLM
17 Aug - 03 Sep	Copa
20 Aug - 27 Aug	KLM
19 Aug - 05 Sep	Air France
18 Aug - 01 Sep	Copa
26 Aug - 10 Sep	LATAM Airlines Group
20 Aug - 10 Sep	Copa
17 Aug - 29 Aug	British Airways
17 Aug - 19 Aug	KLM
17 Aug - 31 Aug	Copa
29 Aug - 02 Sep	LATAM Airlines Group
18 Aug - 29 Aug	Iberia
22 Aug - 29 Aug	Air France

Also check the deals for one-way flights from Rio De Janeiro to Porto in August.

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 August from 813€

Return flights