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

Return flights

07 Aug - 08 Aug	Austrian Airlines
21 Aug - 25 Aug	SWISS	direct
21 Aug - 07 Sep	Austrian Airlines
22 Aug - 08 Sep	Lufthansa
08 Aug - 13 Aug	SWISS	direct
01 Aug - 04 Aug	SWISS	direct
14 Aug - 18 Aug	SWISS	direct
22 Aug - 08 Sep	SWISS	direct
16 Aug - 18 Aug	Lufthansa
19 Aug - 21 Aug	Austrian Airlines
20 Aug - 22 Aug	Austrian Airlines
18 Aug - 20 Aug	Austrian Airlines
06 Aug - 15 Aug	Austrian Airlines
31 Aug - 03 Sep	Eurowings

Also check the deals for one-way flights from Graz to Zurich 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 Graz to Zurich in August from 233€

Return flights