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

Return flights

12 Dec - 08 Jan	VietJet Air
20 Dec - 04 Jan	VietJet Air
14 Dec - 10 Jan	VietJet Air
02 Dec - 07 Dec	VietJet Air
01 Dec - 07 Dec	VietJet Air
02 Dec - 10 Dec	VietJet Air
02 Dec - 08 Dec	VietJet Air
20 Dec - 03 Jan	VietJet Air
21 Dec - 03 Jan	VietJet Air
20 Dec - 31 Dec	VietJet Air
23 Dec - 31 Dec	VietJet Air
24 Dec - 31 Dec	VietJet Air
06 Dec - 14 Dec	VietJet Air
08 Dec - 14 Dec	VietJet Air
09 Dec - 15 Dec	VietJet Air
25 Dec - 04 Jan	VietJet Air
29 Dec - 03 Jan	VietJet Air
30 Dec - 06 Jan	VietJet Air
22 Dec - 11 Jan	AirAsia
28 Dec - 03 Jan	VietJet Air

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 412€

Return flights