AirHint found the following cheapest return flights from Porto (OPO) to Seoul (ICN) in August 2025 (see full year).

Return flights

18 Aug - 28 Aug	Ryanair
12 Aug - 19 Aug	Ryanair
20 Aug - 27 Aug	Ryanair
04 Aug - 08 Aug	Ryanair
04 Aug - 18 Aug	Ryanair
05 Aug - 09 Aug	Ryanair
14 Aug - 20 Aug	easyJet
16 Aug - 23 Aug	Ryanair
14 Aug - 24 Aug	easyJet
08 Aug - 29 Aug	Ryanair
18 Aug - 16 Sep	Lufthansa

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.

Book a cheap hotel in Seoul

Cheap car rent in Seoul

Cheapest return flights from Porto to Seoul in August from 785€

Return flights