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

Return flights

01 Dec - 17 Dec	Air Canada
01 Dec - 13 Dec	Air Canada
10 Dec - 17 Dec	Air Canada
29 Dec - 17 Jan	Air Canada
09 Dec - 18 Dec	Air Canada
01 Dec - 05 Dec	Air Canada
03 Dec - 29 Dec	Air Canada
07 Dec - 15 Dec	Delta
30 Dec - 11 Jan	Delta
10 Dec - 24 Dec	Delta
05 Dec - 18 Dec	Air Canada
31 Dec - 20 Jan	Delta
09 Dec - 16 Dec	Delta
26 Dec - 25 Jan	Air Canada
30 Dec - 18 Jan	Air Transat
09 Dec - 15 Jan	Delta
24 Dec - 23 Jan	Delta
21 Dec - 23 Jan	Delta
21 Dec - 22 Jan	Delta
21 Dec - 11 Jan	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 430€

Return flights