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

Return flights

03 Dec - 10 Dec	Ryanair
07 Dec - 16 Dec	Ryanair
03 Dec - 18 Dec	Ryanair
29 Dec - 17 Jan	LOT
06 Dec - 14 Dec	Ryanair
04 Dec - 11 Dec	Ryanair
04 Dec - 10 Dec	Ryanair
09 Dec - 15 Dec	Etihad Airways
08 Dec - 15 Dec	Etihad Airways
09 Dec - 16 Dec	Etihad Airways
02 Dec - 11 Dec	Etihad Airways
28 Dec - 17 Jan	LOT
27 Dec - 17 Jan	LOT
29 Dec - 13 Jan	Brussels Airlines
29 Dec - 12 Jan	Brussels Airlines
10 Dec - 01 Jan	Wizz Air
17 Dec - 17 Jan	SunExpress
27 Dec - 02 Jan	Turkish Airlines
17 Dec - 16 Jan	SunExpress
21 Dec - 15 Jan	TUI fly Belgium

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 494€

Return flights