AirHint found the following cheapest one-way flights from Brussels (BRU) to Sydney (SYD) in December 2025 (see full year).

One-Way flights

01 Dec	Ryanair
28 Dec	Hainan Airlines
31 Dec	Ryanair
05 Dec	Etihad Airways
12 Dec	Brussels Airlines
29 Dec	Etihad Airways
27 Dec	Etihad Airways
26 Dec	Qatar Airways
20 Dec	Cathay Pacific
03 Dec	British Airways

Also check the deals for return flights from Brussels to Sydney 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 one-way flights from Brussels to Sydney in December from $492

One-Way flights