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

Return flights

13 Sep - 19 Oct	Ryanair
20 Sep - 30 Sep	Ryanair
17 Sep - 25 Sep	Ryanair
24 Sep - 30 Sep	Delta
18 Sep - 30 Sep	Ryanair
18 Sep - 22 Sep	Delta
17 Sep - 26 Sep	Lufthansa
20 Sep - 01 Oct	Ryanair
11 Sep - 25 Sep	Ryanair
24 Sep - 06 Oct	Air Serbia
19 Sep - 30 Sep	Ryanair
10 Sep - 22 Sep	Ryanair
20 Sep - 28 Sep	Ryanair
28 Sep - 07 Oct	Ryanair
27 Sep - 04 Oct	Lufthansa
16 Sep - 04 Oct	Ryanair
29 Sep - 07 Oct	Air Serbia
29 Sep - 10 Oct	Ryanair
19 Sep - 02 Oct	Lufthansa
28 Sep - 05 Oct	Ryanair

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 547€

Return flights