Cheapest return flights from Chicago to Istanbul in September from 507€

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

Return flights

17 Sep - 15 Oct Icelandair
16 Sep - 27 Sep Spirit Airlines
11 Sep - 25 Sep Icelandair
11 Sep - 15 Sep Icelandair
26 Sep - 11 Oct Spirit Airlines
22 Sep - 29 Sep Spirit Airlines
30 Sep - 14 Oct Spirit Airlines
12 Sep - 21 Sep Icelandair
05 Sep - 26 Sep Icelandair
10 Sep - 26 Sep Icelandair
04 Sep - 26 Sep Icelandair
03 Sep - 18 Sep Icelandair
07 Sep - 13 Sep Spirit Airlines
17 Sep - 15 Oct Turkish Airlines direct
30 Sep - 14 Oct Turkish Airlines direct

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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