AirHint found the following cheapest return flights from Singapore (SIN) to Bandar Seri Begawan (BWN) in September 2025 (see full year).

Return flights

27 Sep - 13 Oct	AirAsia
27 Sep - 14 Oct	AirAsia
03 Sep - 07 Sep	Singapore Airlines	direct
03 Sep - 06 Sep	Singapore Airlines	direct
06 Sep - 07 Sep	Royal Brunei	direct
01 Sep - 05 Sep	Royal Brunei	direct
09 Sep - 12 Sep	Royal Brunei	direct
10 Sep - 12 Sep	Royal Brunei	direct
11 Sep - 12 Sep	Royal Brunei	direct
19 Sep - 21 Sep	Royal Brunei	direct
19 Sep - 19 Sep	Royal Brunei	direct
26 Sep - 28 Sep	Royal Brunei	direct
27 Sep - 10 Oct	AirAsia
26 Sep - 13 Oct	AirAsia
24 Sep - 13 Oct	AirAsia
26 Sep - 14 Oct	AirAsia
24 Sep - 14 Oct	AirAsia
27 Sep - 12 Oct	AirAsia
27 Sep - 05 Oct	AirAsia
26 Sep - 10 Oct	AirAsia

Also check the deals for one-way flights from Singapore to Bandar Seri Begawan in September.

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 Singapore to Bandar Seri Begawan in September from $258

Return flights