AirHint found the following cheapest return flights from Dublin (DUB) to Seoul (ICN) in April 2026 (see full year).

Return flights

28 Apr - 14 May	Lufthansa
20 Apr - 14 May	Lufthansa
14 Apr - 25 Apr	Aer Lingus
06 Apr - 15 Apr	Aer Lingus
21 Apr - 06 May	Lufthansa
20 Apr - 05 May	Lufthansa
28 Apr - 15 May	Lufthansa
20 Apr - 18 May	Lufthansa
28 Apr - 08 May	Lufthansa
29 Apr - 12 May	Lufthansa
26 Apr - 12 May	Lufthansa
27 Apr - 11 May	Lufthansa
14 Apr - 24 Apr	Scandinavian Airlines
09 Apr - 22 Apr	Scandinavian Airlines
07 Apr - 21 Apr	Lufthansa
11 Apr - 27 Apr	Ryanair
14 Apr - 28 Apr	Lufthansa
16 Apr - 24 Apr	Scandinavian Airlines
11 Apr - 28 Apr	Lufthansa
09 Apr - 23 Apr	Etihad Airways

Also check the deals for one-way flights from Dublin to Seoul in April.

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 Dublin to Seoul in April from 493€

Return flights