AirHint found the following cheapest return flights from Zagreb (ZAG) to Warsaw (WAW) in August 2025 (see full year).

Return flights

01 Aug - 03 Aug	Ryanair
22 Aug - 26 Aug	Lufthansa
19 Aug - 28 Aug	Lufthansa
05 Aug - 07 Aug	Ryanair
21 Aug - 26 Aug	Austrian Airlines
21 Aug - 25 Aug	Austrian Airlines
14 Aug - 22 Aug	Lufthansa
14 Aug - 25 Aug	Lufthansa
14 Aug - 01 Sep	Lufthansa
28 Aug - 31 Aug	Lufthansa
16 Aug - 28 Aug	Austrian Airlines
14 Aug - 01 Sep	LOT	direct

Also check the deals for one-way flights from Zagreb to Warsaw 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 Zagreb to Warsaw in August from 171€

Return flights