AirHint found the following cheapest return flights from Seoul (ICN) to Bandar Seri Begawan (BWN) in December 2025 (see full year).

Return flights

06 Dec - 09 Dec	Cebu Pacific
02 Dec - 09 Dec	Philippines AirAsia Inc.
15 Dec - 22 Dec	AirAsia X
01 Dec - 08 Dec	Singapore Airlines
07 Dec - 08 Dec	AirAsia X
23 Dec - 31 Dec	Singapore Airlines
22 Dec - 01 Jan	Singapore Airlines
23 Dec - 01 Jan	Singapore Airlines
24 Dec - 01 Jan	Singapore Airlines
22 Dec - 11 Jan	AirAsia X
01 Dec - 07 Dec	AirAsia X
01 Dec - 09 Dec	AirAsia X
01 Dec - 13 Dec	AirAsia X
01 Dec - 11 Dec	AirAsia X
25 Dec - 11 Jan	AirAsia X
21 Dec - 11 Jan	AirAsia X
16 Dec - 06 Jan	AirAsia X
22 Dec - 06 Jan	AirAsia X
21 Dec - 06 Jan	AirAsia X
27 Dec - 03 Jan	Philippines AirAsia Inc.

Also check the deals for one-way flights from Seoul to Bandar Seri Begawan 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 Seoul to Bandar Seri Begawan in December from $317

Return flights