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

Return flights

16 Sep - 16 Oct	Ryanair
18 Sep - 12 Oct	Ryanair
21 Sep - 12 Oct	Ryanair
08 Sep - 21 Sep	Ryanair
14 Sep - 13 Oct	Ryanair
08 Sep - 12 Oct	Ryanair
07 Sep - 21 Sep	Ryanair
08 Sep - 16 Sep	Ryanair
10 Sep - 24 Sep	Ryanair
10 Sep - 17 Sep	Ryanair
03 Sep - 18 Sep	Ryanair
15 Sep - 18 Sep	Ryanair
01 Sep - 16 Oct	Ryanair
08 Sep - 11 Sep	Ryanair
09 Sep - 17 Sep	Ryanair
03 Sep - 06 Sep	Ryanair
28 Sep - 11 Oct	Ryanair
02 Sep - 16 Oct	Ryanair
22 Sep - 06 Oct	Ryanair
30 Sep - 13 Oct	Wizz Air Malta

Also check the deals for one-way flights from Hahn 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.

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Cheapest return flights from Hahn to Seoul in September from $667

Return flights