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

Return flights

16 Sep - 28 Oct	Wizz Air
25 Sep - 13 Oct	AJet
28 Sep - 13 Oct	AJet
30 Sep - 11 Oct	LOT
24 Sep - 06 Oct	Eurowings
22 Sep - 06 Oct	Air Serbia
21 Sep - 25 Sep	Pegasus Airlines
27 Sep - 13 Oct	Pegasus Airlines
23 Sep - 27 Sep	Wizz Air Malta
09 Sep - 21 Sep	Eurowings
19 Sep - 24 Sep	Eurowings
12 Sep - 15 Sep	Pegasus Airlines
12 Sep - 19 Sep	Pegasus Airlines
22 Sep - 28 Sep	Air Serbia
19 Sep - 21 Sep	Eurowings
10 Sep - 13 Sep	Eurowings
15 Sep - 22 Sep	Lufthansa
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 631€

Return flights