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

Return flights

10 Dec - 16 Jan	Icelandair
10 Dec - 19 Jan	Icelandair
03 Dec - 12 Dec	Icelandair
03 Dec - 08 Dec	Icelandair
10 Dec - 12 Jan	Icelandair
03 Dec - 10 Dec	Air Canada
01 Dec - 15 Dec	Air Canada
01 Dec - 08 Dec	Lufthansa
09 Dec - 19 Jan	Delta
29 Dec - 19 Jan	Delta
29 Dec - 12 Jan	Delta
01 Dec - 09 Dec	Air Canada
03 Dec - 27 Dec	Norse Atlantic Airways (UK)
04 Dec - 15 Dec	Norse Atlantic Airways
03 Dec - 17 Dec	Norse Atlantic Airways (UK)
31 Dec - 24 Jan	Delta
01 Dec - 07 Dec	Norse Atlantic Airways
11 Dec - 14 Jan	Air France
12 Dec - 14 Jan	Air France
30 Dec - 29 Jan	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 $398

Return flights