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

Return flights

29 May - 13 Jun	LOT
13 May - 02 Jun	easyJet
28 May - 09 Jun	Ryanair
28 May - 12 Jun	Ryanair
14 May - 29 May	easyJet
05 May - 19 May	Lufthansa
01 May - 13 May	Iberia
01 May - 15 May	Ryanair
01 May - 20 May	Ryanair
04 May - 18 May	easyJet
01 May - 11 May	Ryanair
01 May - 16 May	Air Europa
26 May - 04 Jun	Lufthansa

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

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 May from 645€

Return flights