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

Return flights

11 Mar - 22 Mar	Ryanair
06 Mar - 20 Mar	Ryanair
06 Mar - 18 Mar	Iberia
16 Mar - 27 Mar	Iberia
17 Mar - 29 Mar	Air Europa
05 Mar - 21 Mar	Air Europa
14 Mar - 21 Mar	Air Europa
15 Mar - 27 Mar	Ryanair
20 Mar - 06 Apr	easyJet
20 Mar - 05 Apr	easyJet
28 Mar - 04 Apr	Ryanair
24 Mar - 09 Apr	Vueling Airlines
25 Mar - 05 Apr	Ryanair
30 Mar - 04 Apr	Ryanair
27 Mar - 03 Apr	Ryanair
21 Mar - 05 Apr	Ryanair
22 Mar - 08 Apr	Vueling Airlines
26 Mar - 09 Apr	easyJet

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

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 March from 496€

Return flights