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

Return flights

06 Sep - 15 Oct	Ryanair
06 Sep - 21 Oct	Ryanair
23 Sep - 14 Oct	Scoot Tigerair
11 Sep - 05 Oct	Ryanair
27 Sep - 29 Oct	Scoot Tigerair
06 Sep - 13 Sep	Ryanair
06 Sep - 22 Sep	Ryanair
27 Sep - 27 Oct	Scoot Tigerair
27 Sep - 21 Oct	Scoot Tigerair
27 Sep - 24 Oct	Scoot Tigerair
04 Sep - 11 Sep	Ryanair
18 Sep - 27 Sep	Ryanair
18 Sep - 21 Sep	Ryanair
06 Sep - 19 Sep	Scoot Tigerair
19 Sep - 27 Sep	Ryanair
09 Sep - 12 Sep	Scoot Tigerair
07 Sep - 21 Sep	Ryanair
15 Sep - 01 Oct	Wizz Air Malta
01 Sep - 27 Sep	Etihad Airways
27 Sep - 22 Oct	Scoot Tigerair

Also check the deals for one-way flights from Vienna to Sydney 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 Vienna to Sydney in September from 686€

Return flights