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

Return flights

05 Dec - 07 Jan	Ryanair
25 Dec - 29 Jan	Hainan Airlines
27 Dec - 18 Jan	Turkish Airlines
20 Dec - 18 Jan	Wizz Air Malta
25 Dec - 14 Jan	Hainan Airlines
04 Dec - 14 Dec	Ryanair
01 Dec - 15 Dec	Ryanair
27 Dec - 24 Jan	Turkish Airlines
07 Dec - 14 Dec	Ryanair
31 Dec - 18 Jan	Ryanair
25 Dec - 10 Jan	Hainan Airlines
31 Dec - 15 Jan	Ryanair
14 Dec - 03 Jan	Ryanair
10 Dec - 17 Dec	Ryanair
05 Dec - 20 Dec	Juneyao Airlines
27 Dec - 31 Dec	Pegasus Airlines
03 Dec - 16 Dec	Turkish Airlines
19 Dec - 26 Dec	Ryanair
18 Dec - 29 Dec	LOT
09 Dec - 21 Dec	Turkish Airlines

Also check the deals for one-way 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 return flights from Brussels to Sydney in December from $1109

Return flights