AirHint found the following cheapest one-way flights from Hanoi (HAN) to Sydney (SYD) in October 2025 (see full year).

One-Way flights

21 Oct	VietJet Air
24 Oct	VietJet Air
29 Oct	Scoot Tigerair
23 Oct	VietJet Air
19 Oct	VietJet Air
17 Oct	VietJet Air
18 Oct	Scoot Tigerair
01 Oct	Scoot Tigerair
26 Oct	Scoot Tigerair
04 Oct	Scoot Tigerair

Also check the deals for return flights from Hanoi 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 one-way flights from Hanoi to Sydney in October from $142

One-Way flights