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

Return flights

17 Dec - 26 Jan	HK Express
30 Dec - 07 Jan	Scoot Tigerair
24 Dec - 07 Jan	Scoot Tigerair
01 Dec - 05 Dec	Scoot Tigerair
29 Dec - 05 Jan	Scoot Tigerair
20 Dec - 22 Jan	HK Express
04 Dec - 07 Dec	Scoot Tigerair
01 Dec - 08 Dec	Scoot Tigerair
02 Dec - 04 Dec	AirAsia
02 Dec - 09 Dec	Scoot Tigerair
05 Dec - 12 Dec	Scoot Tigerair
08 Dec - 12 Dec	Scoot Tigerair
16 Dec - 31 Dec	Scoot Tigerair
01 Dec - 09 Dec	Scoot Tigerair
12 Dec - 31 Dec	Scoot Tigerair
29 Dec - 04 Jan	Scoot Tigerair
27 Dec - 15 Jan	AirAsia
30 Dec - 15 Jan	AirAsia
30 Dec - 17 Jan	AirAsia
24 Dec - 02 Jan	Scoot Tigerair

Also check the deals for one-way flights from Hong Kong 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 Hong Kong to Sydney in December from $417

Return flights