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

Return flights

23 Apr - 08 May	Aer Lingus
15 Apr - 11 May	Aer Lingus
26 Apr - 09 May	Hainan Airlines
25 Apr - 08 May	Hainan Airlines
29 Apr - 06 May	Ryanair
25 Apr - 13 May	Hainan Airlines
21 Apr - 09 May	Ryanair
22 Apr - 09 May	Ryanair
14 Apr - 07 May	Etihad Airways
18 Apr - 28 Apr	Ryanair
13 Apr - 07 May	Etihad Airways
13 Apr - 19 Apr	Etihad Airways
01 Apr - 20 Apr	KLM
09 Apr - 22 Apr	Etihad Airways
14 Apr - 22 Apr	Ryanair
05 Apr - 13 Apr	Ryanair
16 Apr - 26 Apr	Ryanair
13 Apr - 27 Apr	Ryanair
09 Apr - 15 Apr	Etihad Airways
02 Apr - 13 Apr	Ryanair

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 542€

Return flights