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

Return flights

15 Oct - 29 Oct	Wizz Air Malta
04 Oct - 17 Oct	easyJet
20 Oct - 25 Oct	Ryanair
19 Oct - 27 Oct	TAP
19 Oct - 26 Oct	TAP
03 Oct - 10 Oct	Ryanair
03 Oct - 19 Oct	Ryanair
03 Oct - 18 Oct	Ryanair
13 Oct - 21 Oct	easyJet
16 Oct - 19 Oct	Transavia France
18 Oct - 01 Nov	Ryanair
20 Oct - 01 Nov	KLM

Also check the deals for one-way flights from Porto to Seoul in October.

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 October from 572€

Return flights