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

Return flights

06 May - 13 May	Aer Lingus
27 May - 07 Jun	Aer Lingus
26 May - 07 Jun	Aer Lingus
25 May - 07 Jun	Aer Lingus
18 May - 24 May	Aer Lingus
02 May - 09 May	Aer Lingus
19 May - 09 Jun	Lufthansa
20 May - 03 Jun	Lufthansa
18 May - 27 May	Lufthansa
19 May - 08 Jun	Lufthansa
31 May - 17 Jun	Lufthansa
28 May - 17 Jun	Lufthansa
26 May - 13 Jun	Lufthansa
25 May - 09 Jun	Lufthansa
11 May - 25 May	Lufthansa
05 May - 18 May	Lufthansa
04 May - 14 May	Lufthansa
07 May - 20 May	Lufthansa
14 May - 28 May	Lufthansa
14 May - 26 May	Lufthansa

Also check the deals for one-way flights from Dublin 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 Dublin to Seoul in May from 388€

Return flights