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

Return flights

24 Aug - 08 Sep	Etihad Airways
24 Aug - 04 Sep	Etihad Airways
18 Aug - 22 Sep	Ryanair
18 Aug - 15 Sep	Ryanair
29 Aug - 12 Sep	Air France
21 Aug - 28 Aug	Aer Lingus
18 Aug - 04 Sep	Air France
25 Aug - 28 Aug	Ryanair
23 Aug - 30 Aug	Aer Lingus
26 Aug - 02 Sep	Aer Lingus
06 Aug - 10 Sep	Scandinavian Airlines
11 Aug - 17 Aug	Ryanair
05 Aug - 01 Sep	Etihad Airways
22 Aug - 06 Sep	Air France
21 Aug - 24 Aug	Aer Lingus
16 Aug - 23 Aug	Ryanair
13 Aug - 20 Aug	Ryanair
07 Aug - 14 Aug	Scandinavian Airlines
11 Aug - 16 Aug	Ryanair
05 Aug - 07 Aug	Ryanair

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

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 August from 599€

Return flights