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

Return flights

01 Dec - 08 Dec	British Airways
21 Dec - 30 Dec	British Airways
06 Dec - 11 Dec	British Airways
08 Dec - 15 Dec	British Airways
01 Dec - 08 Dec	Singapore Airlines	direct
08 Dec - 13 Dec	Turkish Airlines
19 Dec - 26 Dec	Turkish Airlines
15 Dec - 22 Dec	British Airways
21 Dec - 04 Jan	IndiGo
22 Dec - 29 Dec	Singapore Airlines	direct
21 Dec - 30 Dec	Singapore Airlines	direct

Also check the deals for one-way flights from Singapore to Brussels 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 Singapore to Brussels in December from 543€

Return flights