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

Return flights

31 Dec - 16 Jan	Icelandair
31 Dec - 26 Jan	Icelandair
08 Dec - 16 Dec	Norse Atlantic Airways (UK)
30 Dec - 15 Jan	LOT
31 Dec - 12 Jan	KLM
31 Dec - 17 Jan	KLM
31 Dec - 14 Jan	KLM
31 Dec - 18 Jan	KLM
31 Dec - 15 Jan	LOT
30 Dec - 29 Jan	LOT
30 Dec - 14 Jan	LOT
08 Dec - 17 Dec	ITA Airways
08 Dec - 11 Dec	Iberia
08 Dec - 13 Dec	Norse Atlantic Airways (UK)
08 Dec - 14 Dec	Iberia
09 Dec - 19 Dec	Delta
08 Dec - 18 Dec	Delta
08 Dec - 12 Dec	Delta
11 Dec - 14 Dec	Iberia
10 Dec - 18 Dec	Norse Atlantic Airways (UK)

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 350€

Return flights