Cheapest return flights from Chicago to Istanbul in September from 503€

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

Return flights

25 Sep - 28 Sep Scandinavian Airlines
12 Sep - 26 Sep KLM
04 Sep - 20 Sep Air France
12 Sep - 26 Sep Turkish Airlines direct
25 Sep - 28 Sep Turkish Airlines direct
04 Sep - 20 Sep Turkish Airlines direct

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

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