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

Return flights

04 Dec - 08 Dec	AirAsia
31 Dec - 05 Jan	AirAsia
30 Dec - 04 Jan	AirAsia
03 Dec - 07 Dec	AirAsia
28 Dec - 03 Jan	AirAsia
12 Dec - 14 Dec	Indonesia AirAsia
17 Dec - 21 Dec	AirAsia
03 Dec - 17 Dec	AirAsia
03 Dec - 10 Dec	AirAsia
06 Dec - 13 Dec	AirAsia
05 Dec - 12 Dec	AirAsia
03 Dec - 06 Dec	Royal Brunei	direct
30 Dec - 04 Jan	Royal Brunei	direct
05 Dec - 07 Dec	AirAsia
27 Dec - 04 Jan	Royal Brunei	direct
30 Dec - 06 Jan	Royal Brunei	direct
28 Dec - 03 Jan	Royal Brunei	direct
29 Dec - 01 Jan	Singapore Airlines
29 Dec - 05 Jan	Singapore Airlines
26 Dec - 01 Jan	Singapore Airlines

Also check the deals for one-way flights from Bangkok 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.

Book a cheap hotel in Bandar Seri Begawan

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Cheapest return flights from Bangkok to Bandar Seri Begawan in December from $301

Return flights