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

Return flights

01 Dec - 15 Dec	Wizz Air
01 Dec - 13 Dec	Wizz Air
01 Dec - 14 Dec	Wizz Air
01 Dec - 23 Dec	Wizz Air
04 Dec - 14 Dec	Ryanair
02 Dec - 14 Dec	Ryanair
03 Dec - 14 Dec	Ryanair
07 Dec - 22 Dec	Ryanair
10 Dec - 15 Dec	Ryanair
02 Dec - 24 Dec	Ryanair
29 Dec - 14 Jan	Ryanair
29 Dec - 17 Jan	Ryanair
29 Dec - 18 Jan	Ryanair
29 Dec - 16 Jan	Ryanair
11 Dec - 08 Jan	Hainan Airlines
29 Dec - 12 Jan	LOT
16 Dec - 16 Jan	Ryanair
17 Dec - 16 Jan	SunExpress
28 Dec - 07 Jan	Hainan Airlines
26 Dec - 10 Jan	Ryanair

Also check the deals for one-way flights from Brussels 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 Brussels to Seoul in December from 457€

Return flights