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

Return flights

31 Dec - 31 Jan	Delta
31 Dec - 14 Jan	Delta
31 Dec - 23 Jan	Delta
31 Dec - 16 Jan	Delta
31 Dec - 12 Jan	Delta
30 Dec - 23 Jan	Delta
30 Dec - 21 Jan	Delta
30 Dec - 29 Jan	Delta
30 Dec - 24 Jan	Delta
30 Dec - 26 Jan	Delta
25 Dec - 30 Dec	United
24 Dec - 28 Dec	United
27 Dec - 30 Dec	Frontier Airlines
26 Dec - 29 Dec	United
23 Dec - 27 Dec	Frontier Airlines
28 Dec - 31 Dec	United
24 Dec - 30 Dec	Porter Airlines (Canada) Ltd
23 Dec - 28 Dec	Air Transat
22 Dec - 27 Dec	United
22 Dec - 30 Dec	Delta

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 653€

Return flights