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

Return flights

03 Dec - 12 Dec	Icelandair
24 Dec - 12 Jan	Icelandair
01 Dec - 08 Dec	SWISS
02 Dec - 16 Dec	SWISS
02 Dec - 09 Dec	SWISS
05 Dec - 12 Dec	Norse Atlantic Airways (UK)
07 Dec - 16 Dec	Iberia
04 Dec - 12 Dec	KLM
11 Dec - 24 Dec	KLM
13 Dec - 20 Jan	British Airways
29 Dec - 12 Jan	KLM
29 Dec - 05 Jan	KLM
12 Dec - 19 Dec	KLM
18 Dec - 01 Jan	KLM
22 Dec - 09 Jan	HiSky Europe
02 Dec - 09 Dec	Turkish Airlines	direct
15 Dec - 12 Jan	Delta
28 Dec - 04 Jan	British Airways
19 Dec - 12 Jan	Air France
26 Dec - 02 Jan	Iberia

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.

Book a cheap hotel in Istanbul

Cheap car rent in Istanbul

Cheapest return flights from New York to Istanbul in December from 347€

Return flights