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

Return flights

21 Aug - 12 Sep	Finnair
16 Aug - 03 Sep	Ryanair
21 Aug - 03 Sep	Finnair
31 Aug - 10 Sep	Hainan Airlines
14 Aug - 05 Sep	Ryanair
23 Aug - 30 Aug	Ryanair
23 Aug - 05 Sep	Brussels Airlines
18 Aug - 29 Aug	Hainan Airlines
22 Aug - 29 Aug	Hainan Airlines
14 Aug - 31 Aug	KLM
15 Aug - 09 Sep	Etihad Airways
09 Aug - 30 Aug	Aegean Airlines
04 Aug - 11 Aug	Juneyao Airlines
05 Aug - 22 Aug	Ryanair
21 Aug - 24 Aug	Brussels Airlines
11 Aug - 31 Aug	KLM
04 Aug - 21 Aug	Juneyao Airlines
14 Aug - 09 Sep	Turkish Airlines
14 Aug - 08 Sep	Thai Airways
15 Aug - 08 Sep	Thai Airways

Also check the deals for one-way flights from Brussels to Sydney in August.

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 August from $1102

Return flights