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

Return flights

17 Sep - 23 Sep	Scandinavian Airlines
17 Sep - 27 Sep	Scandinavian Airlines
10 Sep - 17 Sep	China Eastern
19 Sep - 25 Sep	Scandinavian Airlines
08 Sep - 18 Sep	China Eastern
19 Sep - 03 Oct	Scandinavian Airlines
19 Sep - 02 Oct	Scandinavian Airlines
08 Sep - 10 Sep	China Eastern
24 Sep - 30 Sep	T'way Air
09 Sep - 12 Sep	Air France
07 Sep - 18 Sep	Jeju Air
18 Sep - 24 Sep	Air France
18 Sep - 03 Oct	Air France
25 Sep - 02 Oct	T'way Air
29 Sep - 06 Oct	China Eastern
30 Sep - 31 Oct	Lufthansa
25 Sep - 09 Oct	Air France
27 Sep - 10 Oct	Air Canada

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

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 Dublin

Cheap car rent in Dublin

Cheapest return flights from Seoul to Dublin in September from $592

Return flights