Cheapest one-way ORD–IST flights, September

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

One-Way flights

26 Sep Icelandair
06 Sep Icelandair
17 Sep Icelandair
19 Sep Qatar Airways
06 Sep Turkish Airlines direct
17 Sep Turkish Airlines direct
19 Sep Turkish Airlines direct
05 Sep Turkish Airlines direct
26 Sep Turkish Airlines direct

Also check the deals for return flights from Chicago to Istanbul in September.

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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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