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

Return flights

07 Dec - 17 Dec	Ryanair
07 Dec - 14 Dec	Ryanair
07 Dec - 10 Dec	Ryanair
09 Dec - 13 Dec	Aer Lingus
10 Dec - 26 Dec	Aer Lingus
08 Dec - 15 Dec	Ryanair
10 Dec - 17 Dec	Aer Lingus
09 Dec - 19 Dec	Ryanair
08 Dec - 31 Jan	Air France
30 Dec - 21 Jan	Air France
11 Dec - 22 Dec	Aer Lingus
06 Dec - 08 Dec	Ryanair
31 Dec - 09 Jan	Aer Lingus
22 Dec - 20 Jan	Ryanair
18 Dec - 19 Jan	Aer Lingus
14 Dec - 01 Jan	Ryanair
29 Dec - 13 Jan	Ryanair
27 Dec - 10 Jan	Ryanair
18 Dec - 16 Jan	Ryanair
24 Dec - 01 Jan	Ryanair

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.

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Cheapest return flights from Dublin to Seoul in December from 527€

Return flights