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

Return flights

24 Sep - 14 Oct	Ryanair
23 Sep - 18 Oct	Ryanair
24 Sep - 18 Oct	Ryanair
24 Sep - 15 Oct	Ryanair
17 Sep - 24 Sep	Ryanair
16 Sep - 23 Sep	Ryanair
10 Sep - 17 Sep	Ryanair
22 Sep - 25 Sep	Ryanair
22 Sep - 08 Oct	Ryanair
10 Sep - 23 Sep	Ryanair
10 Sep - 08 Oct	Ryanair
09 Sep - 24 Sep	Ryanair
17 Sep - 10 Oct	Ryanair
13 Sep - 22 Sep	Ryanair
29 Sep - 14 Oct	KLM
02 Sep - 08 Sep	Ryanair
27 Sep - 21 Oct	LOT
27 Sep - 20 Oct	LOT
11 Sep - 15 Sep	Ryanair
02 Sep - 09 Sep	Ryanair

Also check the deals for one-way flights from Hamburg 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 Hamburg to Seoul in September from $683

Return flights