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

Return flights

06 Aug - 13 Aug	Air France
18 Aug - 26 Aug	China Southern
07 Aug - 12 Aug	Air France
07 Aug - 17 Aug	China Southern
18 Aug - 27 Aug	China Eastern
19 Aug - 26 Aug	China Southern
01 Aug - 20 Aug	Air France
05 Aug - 12 Aug	KLM
18 Aug - 28 Aug	China Southern
08 Aug - 21 Aug	Air France
04 Aug - 04 Sep	KLM
04 Aug - 07 Sep	KLM
30 Aug - 07 Sep	Etihad Airways
14 Aug - 03 Sep	Lufthansa
29 Aug - 02 Sep	KLM
23 Aug - 06 Sep	KLM
26 Aug - 23 Sep	Air Canada

Also check the deals for one-way flights from Seoul to Dublin 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 Seoul to Dublin in August from 592€

Return flights