AirHint found the following cheapest return flights from Rio De Janeiro (GIG) to Porto (OPO) in August 2026 (see full year).

Return flights

10 Aug - 19 Aug	Avianca
10 Aug - 20 Aug	Avianca
10 Aug - 18 Aug	Avianca
17 Aug - 27 Aug	British Airways
07 Aug - 17 Aug	Air Europa
10 Aug - 15 Aug	Avianca
10 Aug - 16 Aug	Avianca
10 Aug - 17 Aug	Avianca
19 Aug - 28 Aug	British Airways
19 Aug - 27 Aug	British Airways
21 Aug - 21 Sep	British Airways
21 Aug - 25 Sep	British Airways
27 Aug - 04 Sep	British Airways
26 Aug - 04 Sep	British Airways
25 Aug - 04 Sep	British Airways
01 Aug - 01 Sep	SWISS
25 Aug - 01 Sep	TAP
25 Aug - 02 Sep	TAP
12 Aug - 23 Sep	TAP
19 Aug - 23 Sep	TAP

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 794€

Return flights