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

Return flights

10 Dec - 13 Jan	Turkish Airlines
27 Dec - 03 Jan	Turkish Airlines
26 Dec - 05 Jan	Turkish Airlines
05 Dec - 05 Jan	Turkish Airlines
06 Dec - 06 Jan	Turkish Airlines
04 Dec - 18 Dec	Scoot
03 Dec - 17 Dec	Turkish Airlines
28 Dec - 08 Jan	Scoot
25 Dec - 08 Jan	Scoot
28 Dec - 15 Jan	Scoot
04 Dec - 17 Dec	Turkish Airlines
11 Dec - 18 Dec	Scoot
11 Dec - 25 Dec	Turkish Airlines
23 Dec - 27 Dec	Turkish Airlines
20 Dec - 04 Jan	Etihad Airways
15 Dec - 15 Jan	Turkish Airlines

Also check the deals for one-way flights from Sydney 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 Sydney to Brussels in December from $1210

Return flights