AirHint found the following cheapest return flights from Porto (OPO) to Seoul (ICN) in August 2026 (see full year).

Return flights

30 Aug - 11 Sep	Ryanair
31 Aug - 12 Sep	Turkish Airlines
30 Aug - 12 Sep	LOT
03 Aug - 17 Aug	SWISS
10 Aug - 19 Aug	TAP
31 Aug - 11 Sep	Lufthansa
01 Aug - 16 Aug	Ryanair
05 Aug - 16 Aug	easyJet
01 Aug - 15 Aug	Ryanair
06 Aug - 16 Aug	Turkish Airlines
03 Aug - 07 Aug	Turkish Airlines
02 Aug - 10 Aug	Eurowings
15 Aug - 22 Aug	Lufthansa
07 Aug - 16 Aug	Turkish Airlines

Also check the deals for one-way flights from Porto to Seoul 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 Porto to Seoul in August from $988

Return flights