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

Return flights

13 Aug - 28 Aug	VietJet Air	direct
18 Aug - 22 Aug	Scoot Tigerair
10 Aug - 24 Aug	VietJet Air
12 Aug - 26 Aug	AirAsia
15 Aug - 25 Aug	VietJet Air
02 Aug - 12 Aug	VietJet Air
02 Aug - 14 Aug	VietJet Air
28 Aug - 07 Sep	VietJet Air
30 Aug - 06 Sep	VietJet Air
29 Aug - 07 Sep	VietJet Air
17 Aug - 21 Aug	VietJet Air
16 Aug - 23 Aug	AirAsia
08 Aug - 24 Aug	Scoot Tigerair
16 Aug - 04 Sep	AirAsia
22 Aug - 04 Sep	AirAsia
18 Aug - 04 Sep	AirAsia
15 Aug - 04 Sep	AirAsia
19 Aug - 04 Sep	AirAsia
20 Aug - 04 Sep	AirAsia
22 Aug - 09 Sep	AirAsia

Also check the deals for one-way flights from Hanoi to Sydney in August.

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 August from $314

Return flights