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

Return flights

01 Dec - 14 Dec	Lufthansa
02 Dec - 12 Dec	Lufthansa
02 Dec - 17 Dec	Lufthansa
30 Dec - 12 Jan	Scandinavian Airlines
01 Dec - 07 Dec	Etihad Airways
06 Dec - 13 Dec	Turkish Airlines
16 Dec - 20 Jan	Lufthansa
07 Dec - 01 Jan	Lufthansa
14 Dec - 09 Jan	Scandinavian Airlines
14 Dec - 02 Jan	Scandinavian Airlines
23 Dec - 31 Dec	Scandinavian Airlines
16 Dec - 02 Jan	Lufthansa
15 Dec - 02 Jan	Lufthansa
27 Dec - 02 Jan	SWISS
24 Dec - 31 Dec	Finnair
15 Dec - 27 Dec	KLM
26 Dec - 16 Jan	Ryanair
18 Dec - 01 Jan	Lufthansa
19 Dec - 21 Dec	Lufthansa

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

Book a cheap hotel in Seoul

Cheap car rent in Seoul

Cheapest return flights from Dublin to Seoul in December from 476€

Return flights