AirHint found the following cheapest return flights from Zurich (ZRH) to Graz (GRZ) in August 2025 (see full year).

Return flights

23 Aug - 28 Aug	Lufthansa
13 Aug - 20 Aug	SWISS	direct
20 Aug - 27 Aug	SWISS	direct
13 Aug - 16 Aug	Austrian Airlines
22 Aug - 28 Aug	Austrian Airlines
29 Aug - 10 Sep	Austrian Airlines
21 Aug - 25 Aug	SWISS	direct
28 Aug - 30 Aug	Austrian Airlines
21 Aug - 29 Aug	SWISS	direct
06 Aug - 29 Aug	SWISS	direct
14 Aug - 20 Aug	SWISS	direct
29 Aug - 10 Sep	SWISS	direct
20 Aug - 01 Sep	Austrian Airlines
28 Aug - 01 Sep	Austrian Airlines
28 Aug - 01 Sep	SWISS	direct

Also check the deals for one-way flights from Zurich to Graz 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 Zurich to Graz in August from 223€

Return flights