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

Return flights

13 Sep - 22 Sep	Ryanair
30 Sep - 07 Oct	Ryanair
19 Sep - 29 Sep	Ryanair
23 Sep - 29 Sep	Ryanair
19 Sep - 23 Sep	Ryanair
16 Sep - 23 Sep	Ryanair
09 Sep - 16 Sep	Ryanair
08 Sep - 25 Oct	Ryanair
24 Sep - 28 Sep	Delta
05 Sep - 20 Sep	Delta
07 Sep - 27 Sep	Delta
17 Sep - 25 Sep	Delta
22 Sep - 08 Oct	KLM
25 Sep - 01 Oct	Delta
29 Sep - 06 Oct	Delta
02 Sep - 30 Oct	Delta
19 Sep - 01 Oct	Delta
23 Sep - 01 Oct	Delta
04 Sep - 30 Oct	Ryanair
24 Sep - 05 Oct	Air Canada

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 390€

Return flights