Cheapest return flights from Chicago to Istanbul in September from $582

Best time to book flights for Chicago (ORD) to Istanbul (IST) flights at AirHint

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

Return flights

05 Sep - 14 Sep Icelandair
10 Sep - 15 Sep Spirit Airlines
17 Sep - 08 Oct Icelandair
09 Sep - 16 Sep Icelandair
02 Sep - 11 Sep Icelandair
09 Sep - 30 Sep Icelandair
23 Sep - 30 Sep Icelandair
02 Sep - 09 Sep Icelandair
02 Sep - 08 Sep Icelandair
12 Sep - 19 Sep Icelandair
08 Sep - 15 Sep Spirit Airlines
23 Sep - 04 Oct Icelandair
28 Sep - 18 Oct Spirit Airlines
23 Sep - 13 Oct Icelandair
26 Sep - 12 Oct Icelandair
16 Sep - 07 Oct Etihad Airways
09 Sep - 01 Oct Etihad Airways
10 Sep - 02 Oct Etihad Airways
10 Sep - 03 Oct Icelandair
24 Sep - 03 Oct Icelandair

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

Skyscanner

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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