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

Return flights

20 May - 24 Jun	Lufthansa
12 May - 26 May	Lufthansa
12 May - 02 Jun	Lufthansa
07 May - 20 May	Lufthansa
05 May - 20 May	Lufthansa
25 May - 03 Jun	Lufthansa
19 May - 02 Jun	Lufthansa
20 May - 06 Jun	Lufthansa
07 May - 23 May	Lufthansa
14 May - 25 May	Lufthansa
22 May - 06 Jun	Lufthansa
29 May - 15 Jun	Turkish Airlines
21 May - 27 May	KLM
07 May - 18 May	Lufthansa
02 May - 09 May	Lufthansa
02 May - 10 May	Lufthansa
01 May - 09 May	Scandinavian Airlines

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.

Book a cheap hotel in Seoul

Cheap car rent in Seoul

Cheapest return flights from Dublin to Seoul in May from 482€

Return flights