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

Return flights

22 Sep - 12 Oct	Eurowings
10 Sep - 17 Sep	Ryanair
28 Sep - 11 Oct	LOT
27 Sep - 11 Oct	LOT
28 Sep - 10 Oct	LOT
16 Sep - 23 Sep	Turkish Airlines
01 Sep - 14 Sep	easyJet
01 Sep - 22 Sep	Turkish Airlines
30 Sep - 23 Oct	LOT
02 Sep - 09 Sep	Turkish Airlines
22 Sep - 28 Sep	Eurowings
01 Sep - 15 Sep	Turkish Airlines
02 Sep - 04 Sep	Turkish Airlines
26 Sep - 11 Oct	LOT
14 Sep - 27 Sep	Air France
15 Sep - 05 Oct	Eurowings
07 Sep - 22 Sep	Turkish Airlines
24 Sep - 18 Oct	Turkish Airlines
19 Sep - 18 Oct	easyJet
22 Sep - 06 Oct	KLM

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 584€

Return flights