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

Return flights

09 Dec - 26 Jan	VietJet Air
16 Dec - 26 Jan	VietJet Air
08 Dec - 26 Jan	VietJet Air
23 Dec - 13 Jan	Scoot
26 Dec - 10 Jan	Scoot
29 Dec - 26 Jan	AirAsia
24 Dec - 08 Jan	Scoot
26 Dec - 08 Jan	Scoot
17 Dec - 01 Jan	VietJet Air
19 Dec - 04 Jan	VietJet Air
23 Dec - 30 Dec	AirAsia
10 Dec - 17 Dec	VietJet Air
09 Dec - 13 Dec	VietJet Air
23 Dec - 29 Dec	Scoot
19 Dec - 29 Dec	Scoot
19 Dec - 28 Dec	Scoot
24 Dec - 28 Dec	Scoot
20 Dec - 29 Dec	Scoot
22 Dec - 29 Dec	Scoot
11 Dec - 15 Dec	AirAsia

Also check the deals for one-way flights from Hanoi 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 Hanoi to Sydney in December from 357€

Return flights