AirHint found the following cheapest return flights from Sydney (SYD) to Vienna (VIE) in September 2025 (see full year).

Return flights

16 Sep - 23 Sep	Scoot Tigerair
08 Sep - 23 Sep	Scoot Tigerair
09 Sep - 16 Sep	Scoot Tigerair
03 Sep - 18 Sep	Scoot Tigerair
04 Sep - 18 Sep	Scoot Tigerair
04 Sep - 19 Sep	Air China
02 Sep - 19 Sep	Air China
01 Sep - 16 Sep	Scoot Tigerair
05 Sep - 27 Sep	Scoot Tigerair
16 Sep - 30 Sep	Scoot Tigerair
05 Sep - 04 Oct	Scoot Tigerair
22 Sep - 07 Oct	Scoot Tigerair
02 Sep - 19 Oct	Air China
11 Sep - 07 Oct	Scoot Tigerair
24 Sep - 07 Oct	Scoot Tigerair
11 Sep - 04 Oct	Air China
30 Sep - 17 Oct	Air China
11 Sep - 06 Oct	Air China
10 Sep - 01 Oct	Turkish Airlines
24 Sep - 13 Oct	Turkish Airlines

Also check the deals for one-way flights from Sydney to Vienna in September.

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 Sydney to Vienna in September from 665€

Return flights