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

Return flights

25 Aug - 13 Sep	AirAsia
25 Aug - 08 Sep	AirAsia
20 Aug - 26 Aug	Scoot Tigerair
19 Aug - 26 Aug	AirAsia
15 Aug - 19 Aug	AirAsia
18 Aug - 26 Aug	AirAsia
15 Aug - 26 Aug	AirAsia
12 Aug - 02 Sep	AirAsia
27 Aug - 06 Sep	AirAsia
25 Aug - 05 Sep	AirAsia
27 Aug - 05 Sep	AirAsia
25 Aug - 02 Sep	AirAsia
21 Aug - 24 Aug	AirAsia
16 Aug - 24 Aug	AirAsia
12 Aug - 17 Aug	AirAsia
18 Aug - 24 Aug	AirAsia
12 Aug - 19 Aug	AirAsia
26 Aug - 06 Sep	Scoot Tigerair
20 Aug - 02 Sep	Scoot Tigerair
26 Aug - 02 Sep	Scoot Tigerair

Also check the deals for one-way flights from Hong Kong 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 Hong Kong to Sydney in August from 313€

Return flights