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

Return flights

02 Aug - 02 Sep	TAP
04 Aug - 16 Sep	TAP
04 Aug - 17 Sep	TAP
04 Aug - 25 Aug	TAP
07 Aug - 25 Aug	TAP
18 Aug - 05 Sep	British Airways
03 Aug - 27 Aug	TAP
18 Aug - 27 Aug	British Airways
05 Aug - 04 Sep	KLM
19 Aug - 28 Sep	British Airways
04 Aug - 29 Aug	TAP
11 Aug - 29 Aug	TAP
10 Aug - 12 Sep	Air France
05 Aug - 14 Aug	Iberia
05 Aug - 16 Aug	Iberia
08 Aug - 08 Sep	TAP
05 Aug - 22 Aug	TAP
05 Aug - 15 Aug	British Airways
19 Aug - 02 Sep	British Airways
20 Aug - 10 Sep	LATAM Airlines Group

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 $749

Return flights