Cheapest return flights from Chicago to Istanbul in September from $576

AirHint found the following cheapest return flights from Chicago (ORD) to Istanbul (IST) in September 2026 (see full year).

Return flights

01 Sep - 30 Sep Scandinavian Airlines
06 Sep - 19 Oct Scandinavian Airlines
16 Sep - 30 Sep Scandinavian Airlines
27 Sep - 18 Oct Scandinavian Airlines
03 Sep - 10 Sep Scandinavian Airlines
01 Sep - 08 Sep Scandinavian Airlines
23 Sep - 07 Oct Icelandair
30 Sep - 08 Oct Icelandair
16 Sep - 30 Sep Turkish Airlines direct
01 Sep - 30 Sep Turkish Airlines direct
03 Sep - 10 Sep Turkish Airlines direct
23 Sep - 07 Oct Turkish Airlines direct
06 Sep - 19 Oct Turkish Airlines direct
30 Sep - 08 Oct Turkish Airlines direct
27 Sep - 18 Oct Turkish Airlines direct

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

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