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

Return flights

31 Dec - 26 Jan	Icelandair
31 Dec - 23 Jan	Icelandair
31 Dec - 15 Jan	Austrian Airlines
31 Dec - 16 Jan	Austrian Airlines
31 Dec - 14 Jan	SWISS
31 Dec - 12 Jan	SWISS
31 Dec - 19 Jan	LOT
31 Dec - 24 Jan	Condor
31 Dec - 25 Jan	LOT
30 Dec - 13 Jan	SWISS
27 Dec - 29 Dec	Air Serbia
28 Dec - 31 Dec	SWISS
26 Dec - 29 Dec	Norse Atlantic Airways
25 Dec - 28 Dec	British Airways
25 Dec - 29 Dec	Norse Atlantic Airways
25 Dec - 31 Dec	Lufthansa
25 Dec - 30 Dec	Lufthansa
27 Dec - 29 Dec	jetBlue	direct
25 Dec - 31 Dec	Turkish Airlines	direct
25 Dec - 28 Dec	Turkish Airlines	direct

Also check the deals for one-way flights from New York to Istanbul 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 New York to Istanbul in December from $442

Return flights