AirHint found the following cheapest return flights from Ljubljana (LJU) to New York (JFK) in December 2025 (see full year).

Return flights

19 Dec - 10 Jan	Air France
20 Dec - 30 Dec	SWISS
25 Dec - 31 Dec	Air France
26 Dec - 30 Dec	Air France
25 Dec - 29 Dec	Air France
10 Dec - 14 Dec	Air Serbia
29 Dec - 08 Jan	SWISS
26 Dec - 28 Dec	Air France
29 Dec - 07 Jan	Lufthansa
25 Dec - 01 Jan	KLM
20 Dec - 27 Dec	SWISS
22 Dec - 27 Dec	Air Serbia
27 Dec - 01 Jan	KLM
12 Dec - 25 Dec	Delta
22 Dec - 28 Dec	Lufthansa
20 Dec - 04 Jan	SWISS
31 Dec - 06 Jan	Turkish Airlines
27 Dec - 02 Jan	Lufthansa
25 Dec - 02 Jan	Air Serbia
29 Dec - 04 Jan	SWISS

Also check the deals for one-way flights from Ljubljana to New York 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 Ljubljana to New York in December from $924

Return flights