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

Return flights

04 Sep - 08 Sep	Ryanair
04 Sep - 14 Sep	Ryanair
13 Sep - 16 Sep	Ryanair
09 Sep - 23 Sep	LOT
22 Sep - 29 Sep	Ryanair
15 Sep - 21 Sep	Ryanair
20 Sep - 28 Sep	Ryanair
25 Sep - 28 Sep	Ryanair
13 Sep - 20 Sep	Ryanair
23 Sep - 23 Oct	United
01 Sep - 07 Sep	Ryanair
27 Sep - 08 Oct	Ryanair
19 Sep - 04 Oct	Lufthansa
29 Sep - 04 Oct	Ryanair
27 Sep - 07 Oct	Ryanair
20 Sep - 11 Oct	Lufthansa
22 Sep - 06 Oct	Delta
30 Sep - 05 Oct	Delta
25 Sep - 03 Oct	Delta
28 Sep - 05 Oct	Delta

Also check the deals for one-way flights from Zagreb to Newark in September.

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 September from $574

Return flights