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

Return flights

28 Oct - 03 Nov	AirAsia
27 Oct - 03 Nov	AirAsia
27 Oct - 31 Oct	AirAsia
31 Oct - 07 Nov	AirAsia
31 Oct - 08 Nov	AirAsia
31 Oct - 09 Nov	AirAsia
28 Oct - 08 Nov	AirAsia
28 Oct - 30 Oct	AirAsia
20 Oct - 29 Oct	Scoot
23 Oct - 31 Oct	Scoot
20 Oct - 27 Oct	Scoot
26 Oct - 31 Oct	Scoot
20 Oct - 26 Oct	Scoot
24 Oct - 31 Oct	Scoot
23 Oct - 30 Oct	Scoot
28 Oct - 06 Nov	Scoot
29 Oct - 06 Nov	Scoot
29 Oct - 02 Nov	Scoot
30 Oct - 12 Nov	Scoot
22 Oct - 29 Oct	Scoot

Also check the deals for one-way flights from Hong Kong to Sydney in October.

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 October from $383

Return flights