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

Return flights

05 Aug - 22 Aug	Air China
05 Aug - 29 Aug	Air China
05 Aug - 13 Aug	Air China
05 Aug - 09 Sep	Scoot Tigerair
06 Aug - 21 Aug	Scoot Tigerair
05 Aug - 02 Sep	Scoot Tigerair
08 Aug - 06 Sep	Air China
12 Aug - 28 Aug	Air China
07 Aug - 21 Aug	Air China
09 Aug - 18 Aug	Air China
03 Aug - 29 Aug	Air China
14 Aug - 31 Aug	Air China
02 Aug - 29 Aug	Air China
10 Aug - 07 Sep	Air China
13 Aug - 13 Sep	Scoot Tigerair
10 Aug - 08 Sep	Air China
10 Aug - 11 Sep	Air China
21 Aug - 05 Sep	Air China
21 Aug - 19 Sep	Air China
19 Aug - 29 Sep	Air China

Also check the deals for one-way flights from Sydney to Vienna 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 Sydney to Vienna in August from 650€

Return flights