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

Return flights

03 Dec - 11 Dec	Turkish Airlines
10 Dec - 30 Dec	LOT
10 Dec - 20 Dec	LOT
20 Dec - 30 Dec	LOT
28 Dec - 05 Jan	Scandinavian Airlines
03 Dec - 02 Jan	Lufthansa
25 Dec - 02 Jan	Lufthansa
24 Dec - 06 Jan	LOT
20 Dec - 02 Jan	Lufthansa
26 Dec - 04 Jan	LOT
26 Dec - 12 Jan	Singapore Airlines

Also check the deals for one-way flights from Stuttgart to Seoul in December.

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 December from 654€

Return flights