Cheapest one-way flights from Chicago to Istanbul in September from 211€

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

One-Way flights

11 Sep Spirit Airlines
22 Sep Spirit Airlines
09 Sep Spirit Airlines
15 Sep Frontier Airlines
07 Sep Frontier Airlines
05 Sep Spirit Airlines
06 Sep Spirit Airlines
18 Sep Icelandair
01 Sep Icelandair
04 Sep Spirit Airlines

Also check the deals for return 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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