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

Return flights

05 Dec - 17 Dec	China Southern
04 Dec - 15 Dec	Ryanair
12 Dec - 24 Dec	China Southern
05 Dec - 10 Dec	China Southern
05 Dec - 07 Dec	Turkish Airlines
26 Dec - 06 Jan	China Southern
15 Dec - 31 Jan	Luxair
26 Dec - 01 Jan	China Southern
23 Dec - 06 Jan	Ryanair
20 Dec - 30 Dec	Ryanair
26 Dec - 03 Jan	China Southern
26 Dec - 02 Jan	China Southern
12 Dec - 02 Jan	Lufthansa
23 Dec - 05 Jan	Ryanair
22 Dec - 03 Jan	Ryanair
24 Dec - 04 Jan	Ryanair

Also check the deals for one-way flights from Luxemburg 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 Luxemburg to Seoul in December from $402

Return flights