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

Return flights

02 Dec - 11 Dec	LOT
18 Dec - 27 Dec	Lufthansa
08 Dec - 15 Dec	Lufthansa
01 Dec - 31 Dec	Lufthansa
22 Dec - 28 Dec	Turkish Airlines
08 Dec - 14 Dec	Delta
05 Dec - 15 Dec	Delta
05 Dec - 14 Dec	Delta
31 Dec - 07 Jan	Lufthansa
30 Dec - 06 Jan	Lufthansa
22 Dec - 09 Jan	Lufthansa
16 Dec - 23 Dec	Lufthansa
20 Dec - 09 Jan	Turkish Airlines
29 Dec - 05 Jan	Delta
20 Dec - 10 Jan	Lufthansa
30 Dec - 02 Jan	Turkish Airlines

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

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 December from $646

Return flights