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

Return flights

30 Aug - 06 Sep	Aer Lingus
25 Aug - 07 Sep	Aer Lingus
19 Aug - 25 Aug	Ryanair
31 Aug - 13 Sep	Hainan Airlines
26 Aug - 02 Sep	Ryanair
26 Aug - 09 Sep	Ryanair
26 Aug - 10 Sep	Ryanair
28 Aug - 07 Sep	Ryanair
26 Aug - 11 Sep	Ryanair
27 Aug - 11 Sep	Ryanair
25 Aug - 02 Sep	Ryanair
19 Aug - 29 Aug	Ryanair
28 Aug - 31 Aug	Ryanair
18 Aug - 25 Aug	Ryanair
25 Aug - 27 Aug	Ryanair
18 Aug - 29 Aug	SunExpress
20 Aug - 29 Aug	Ryanair
19 Aug - 28 Aug	Ryanair
19 Aug - 26 Aug	Ryanair
23 Aug - 31 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 614€

Return flights