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

Return flights

02 Dec - 09 Dec	Norse Atlantic Airways (UK)
05 Dec - 12 Dec	Norse Atlantic Airways (UK)
13 Dec - 19 Dec	Icelandair
09 Dec - 23 Dec	Air Canada
09 Dec - 18 Dec	American Airlines
10 Dec - 18 Dec	British Airways
29 Dec - 09 Jan	British Airways
09 Dec - 22 Dec	British Airways
24 Dec - 09 Jan	British Airways
13 Dec - 23 Dec	Air Canada
13 Dec - 25 Dec	American Airlines
18 Dec - 12 Jan	KLM
25 Dec - 01 Jan	KLM
15 Dec - 11 Jan	KLM
16 Dec - 11 Jan	KLM
17 Dec - 11 Jan	KLM
18 Dec - 11 Jan	KLM
14 Dec - 11 Jan	Norse Atlantic Airways (UK)
13 Dec - 11 Jan	British Airways
06 Dec - 20 Dec	American Airlines

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 $464

Return flights