AirHint found the following cheapest return flights from Hong Kong (HKG) to Sydney (SYD) in May 2026 (see full year).

Return flights

20 May - 06 Jun	AirAsia
20 May - 07 Jun	AirAsia
13 May - 16 May	AirAsia
05 May - 09 May	AirAsia
13 May - 19 May	AirAsia
08 May - 12 May	AirAsia
05 May - 12 May	AirAsia
08 May - 13 May	AirAsia
11 May - 13 May	AirAsia
05 May - 13 May	AirAsia
08 May - 16 May	AirAsia
11 May - 16 May	AirAsia
29 May - 06 Jun	AirAsia
26 May - 06 Jun	AirAsia
29 May - 07 Jun	AirAsia
26 May - 07 Jun	AirAsia
23 May - 06 Jun	AirAsia
23 May - 07 Jun	AirAsia
30 May - 06 Jun	AirAsia
30 May - 07 Jun	AirAsia

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

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 May from $488

Return flights