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

Return flights

29 Sep - 27 Oct	LOT
28 Sep - 11 Oct	LOT
30 Sep - 08 Oct	LOT
03 Sep - 09 Sep	LOT
04 Sep - 18 Oct	Wizz Air
06 Sep - 13 Sep	Turkish Airlines
02 Sep - 09 Sep	LOT
08 Sep - 14 Sep	Eurowings
08 Sep - 13 Sep	Wizz Air Malta
05 Sep - 13 Sep	Vueling Airlines
01 Sep - 09 Sep	Wizz Air
04 Sep - 08 Sep	Pegasus Airlines
29 Sep - 05 Oct	LOT
02 Sep - 14 Oct	KLM
28 Sep - 05 Oct	LOT
15 Sep - 26 Sep	Eurowings
27 Sep - 05 Oct	LOT
23 Sep - 30 Sep	LOT
27 Sep - 04 Oct	Eurowings
23 Sep - 05 Oct	KLM

Also check the deals for one-way flights from Stuttgart 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 Stuttgart to Seoul in September from 614€

Return flights