AirHint found the following cheapest return flights from Dublin (DUB) to Seoul (ICN) in September 2026 (see full year).

Return flights

10 Sep - 30 Sep	SWISS
05 Sep - 12 Sep	Etihad Airways
01 Sep - 14 Sep	Qatar Airways
01 Sep - 10 Sep	Qatar Airways
07 Sep - 14 Sep	Qatar Airways
21 Sep - 05 Oct	Qatar Airways
15 Sep - 29 Sep	Qatar Airways
04 Sep - 14 Sep	Qatar Airways
21 Sep - 11 Oct	Etihad Airways
21 Sep - 27 Sep	Qatar Airways
04 Sep - 11 Sep	Qatar Airways
05 Sep - 18 Sep	Ryanair
12 Sep - 03 Oct	Turkish Airlines
30 Sep - 07 Oct	Etihad Airways
29 Sep - 04 Oct	Air France

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

Cheap car rent in Seoul

Cheapest return flights from Dublin to Seoul in September from 569€

Return flights