AirHint found the following cheapest return flights from Seoul (ICN) to Dublin (DUB) in December 2025 (see full year).

Return flights

25 Dec - 04 Jan	KLM
23 Dec - 31 Dec	Lufthansa
26 Dec - 03 Jan	Lufthansa
25 Dec - 03 Jan	Lufthansa
24 Dec - 30 Dec	Scandinavian Airlines
26 Dec - 02 Jan	Lufthansa
24 Dec - 03 Jan	Asiana Airlines
19 Dec - 27 Dec	Scandinavian Airlines
24 Dec - 31 Dec	KLM
25 Dec - 02 Jan	KLM

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

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 Seoul to Dublin in December from 492€

Return flights