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

Return flights

04 Sep - 15 Sep	Spirit Airlines
09 Sep - 17 Sep	Air Canada
09 Sep - 18 Sep	Air Canada
10 Sep - 24 Sep	Air Canada
08 Sep - 17 Sep	Air Canada
06 Sep - 15 Sep	Air Canada
01 Sep - 01 Oct	Air Canada
03 Sep - 12 Sep	Air Canada
02 Sep - 11 Sep	Air Canada
08 Sep - 01 Oct	Air Canada
09 Sep - 25 Sep	Air Canada
03 Sep - 15 Sep	Air Canada
30 Sep - 08 Oct	Air Canada
29 Sep - 10 Oct	Air Canada
19 Sep - 04 Oct	Air Canada
27 Sep - 05 Oct	Air Canada
20 Sep - 05 Oct	Air Canada
27 Sep - 02 Oct	Air Canada
23 Sep - 07 Oct	United

Also check the deals for one-way flights from New York to Istanbul in September.

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 September from $539

Return flights