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

Return flights

23 Dec - 27 Dec	Indonesia AirAsia
19 Dec - 21 Dec	Indonesia AirAsia
16 Dec - 02 Jan	AirAsia
16 Dec - 03 Jan	AirAsia
26 Dec - 02 Jan	AirAsia
26 Dec - 14 Jan	AirAsia
26 Dec - 16 Jan	AirAsia
26 Dec - 15 Jan	AirAsia
13 Dec - 04 Jan	Singapore Airlines
28 Dec - 04 Jan	Royal Brunei	direct
19 Dec - 02 Jan	AirAsia
26 Dec - 03 Jan	AirAsia
02 Dec - 03 Dec	Royal Brunei	direct
16 Dec - 23 Dec	AirAsia
16 Dec - 27 Dec	AirAsia
16 Dec - 26 Dec	AirAsia
16 Dec - 21 Dec	AirAsia
26 Dec - 27 Dec	AirAsia
10 Dec - 23 Dec	Thai AirAsia
19 Dec - 23 Dec	AirAsia

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.

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Cheapest return flights from Bangkok to Bandar Seri Begawan in December from 287€

Return flights