Cheapest one-way flights from Chicago to Istanbul in September from 204€

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

One-Way flights

30 Sep Spirit Airlines
23 Sep Spirit Airlines
18 Sep Spirit Airlines
16 Sep Spirit Airlines
10 Sep Spirit Airlines
27 Sep Spirit Airlines
04 Sep Spirit Airlines
08 Sep Spirit Airlines
05 Sep Spirit Airlines
26 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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