AirHint found the following cheapest return flights from Brussels (BRU) to Singapore (SIN) in September 2025 (see full year).

Return flights

20 Sep - 29 Sep	Austrian Airlines
20 Sep - 28 Sep	IndiGo
04 Sep - 28 Sep	IndiGo
22 Sep - 29 Sep	IndiGo
09 Sep - 28 Sep	IndiGo
15 Sep - 29 Sep	British Airways
08 Sep - 16 Sep	IndiGo
01 Sep - 16 Sep	IndiGo
09 Sep - 17 Sep	Finnair
02 Sep - 14 Sep	Finnair
11 Sep - 01 Oct	Finnair
16 Sep - 08 Oct	Finnair
29 Sep - 06 Oct	Finnair
26 Sep - 29 Oct	Finnair
27 Sep - 05 Oct	Finnair
28 Sep - 05 Oct	Finnair
17 Sep - 02 Oct	Wizz Air Malta
11 Sep - 01 Oct	Singapore Airlines	direct
27 Sep - 05 Oct	Singapore Airlines	direct
29 Sep - 06 Oct	Singapore Airlines	direct

Also check the deals for one-way flights from Brussels to Singapore 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 Brussels to Singapore in September from $436

Return flights