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

Return flights

15 Sep - 22 Sep	Etihad Airways
13 Sep - 20 Sep	Air India
14 Sep - 20 Sep	Air India
24 Sep - 27 Sep	IndiGo
27 Sep - 07 Oct	Etihad Airways
29 Sep - 06 Oct	IndiGo
13 Sep - 19 Sep	Air India
26 Sep - 29 Sep	IndiGo
08 Sep - 15 Sep	IndiGo
04 Sep - 19 Sep	IndiGo
11 Sep - 24 Sep	IndiGo
13 Sep - 18 Sep	Juneyao Airlines
29 Sep - 06 Oct	Singapore Airlines	direct

Also check the deals for one-way flights from Singapore to Brussels 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 Brussels in September from 551€

Return flights