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

Return flights

08 Dec - 14 Dec	Air China
30 Dec - 06 Jan	Air China
17 Dec - 13 Jan	Lufthansa
04 Dec - 07 Dec	Lufthansa
01 Dec - 11 Dec	Scandinavian Airlines
17 Dec - 27 Jan	Lufthansa
03 Dec - 10 Dec	Air France
19 Dec - 30 Dec	Scandinavian Airlines
22 Dec - 03 Jan	China Eastern
26 Dec - 15 Jan	Lufthansa
25 Dec - 31 Dec	KLM
26 Dec - 09 Jan	Lufthansa
23 Dec - 29 Jan	Air France
18 Dec - 27 Dec	China Eastern
08 Dec - 21 Dec	Air China
19 Dec - 28 Dec	Air China
19 Dec - 03 Jan	China Eastern
16 Dec - 30 Jan	Lufthansa
19 Dec - 02 Jan	China Eastern
19 Dec - 31 Dec	China Eastern

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 427€

Return flights