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

Return flights

15 Sep - 25 Sep	AirAsia
21 Sep - 23 Sep	AirAsia
19 Sep - 21 Sep	AirAsia
20 Sep - 23 Sep	AirAsia
28 Sep - 05 Oct	AirAsia
01 Sep - 20 Sep	AirAsia
28 Sep - 06 Oct	AirAsia
04 Sep - 09 Sep	Singapore Airlines	direct
13 Sep - 16 Sep	Singapore Airlines	direct
17 Sep - 21 Sep	Singapore Airlines	direct
08 Sep - 16 Sep	Singapore Airlines	direct
26 Sep - 03 Oct	Singapore Airlines	direct
09 Sep - 16 Sep	Singapore Airlines	direct
28 Sep - 05 Oct	Singapore Airlines	direct
28 Sep - 06 Oct	Singapore Airlines	direct
29 Sep - 06 Oct	AirAsia
28 Sep - 13 Oct	AirAsia
28 Sep - 07 Oct	AirAsia
29 Sep - 13 Oct	AirAsia
29 Sep - 07 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 167€

Return flights