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

Return flights

29 Dec - 11 Jan	AirAsia X
31 Dec - 07 Jan	VietJet Air
27 Dec - 31 Dec	AirAsia X
29 Dec - 07 Jan	AirAsia X
27 Dec - 07 Jan	AirAsia X
31 Dec - 05 Jan	VietJet Air
31 Dec - 06 Jan	VietJet Air
27 Dec - 29 Dec	AirAsia X
27 Dec - 07 Jan	AirAsia X	direct
27 Dec - 13 Jan	AirAsia X	direct
29 Dec - 06 Jan	VietJet Air
31 Dec - 04 Jan	VietJet Air
29 Dec - 29 Dec	AirAsia X
28 Dec - 29 Dec	VietJet Air
27 Dec - 29 Dec	AirAsia X	direct
27 Dec - 31 Dec	AirAsia X	direct
28 Dec - 29 Dec	AirAsia X	direct
27 Dec - 28 Dec	AirAsia X	direct

Also check the deals for one-way flights from Kuala Lumpur 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 Kuala Lumpur to Seoul in December from 283€

Return flights