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

Return flights

03 Dec - 21 Dec	Lufthansa
02 Dec - 08 Dec	Scandinavian Airlines
07 Dec - 26 Dec	Lufthansa
03 Dec - 10 Dec	Scandinavian Airlines
09 Dec - 16 Dec	Lufthansa
11 Dec - 27 Dec	Aer Lingus
29 Dec - 07 Jan	Lufthansa
13 Dec - 30 Dec	Air France
29 Dec - 10 Jan	Lufthansa
27 Dec - 20 Jan	Aer Lingus
16 Dec - 13 Jan	Lufthansa
18 Dec - 31 Dec	Scandinavian Airlines
23 Dec - 06 Jan	Lufthansa
23 Dec - 02 Jan	Lufthansa
15 Dec - 29 Dec	Transavia France
28 Dec - 20 Jan	Lufthansa
18 Dec - 26 Dec	Scandinavian Airlines
30 Dec - 03 Jan	Lufthansa
28 Dec - 11 Jan	Lufthansa
27 Dec - 15 Jan	KLM

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 485€

Return flights