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

Return flights

29 Aug - 11 Sep	Ryanair
29 Aug - 31 Aug	Ryanair
25 Aug - 31 Aug	Ryanair
25 Aug - 03 Sep	Ryanair
27 Aug - 07 Sep	Lufthansa
28 Aug - 07 Sep	Lufthansa
27 Aug - 31 Aug	Croatia Airlines
28 Aug - 13 Sep	Delta
28 Aug - 09 Sep	Delta
09 Aug - 16 Aug	LOT
18 Aug - 31 Aug	Delta
21 Aug - 25 Aug	Delta
18 Aug - 25 Aug	Delta
21 Aug - 30 Aug	Delta
22 Aug - 25 Aug	Delta
21 Aug - 31 Aug	Delta
18 Aug - 01 Sep	Lufthansa

Also check the deals for one-way flights from Zagreb to Newark 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 Newark in August from $642

Return flights