AirHint found the following cheapest one-way flights from Chicago (ORD) to Istanbul (IST) in May 2026 (see full year).
One-Way flights
| 26 May | jetBlue | ||
| 17 May | KLM | ||
| 30 May | Icelandair | ||
| 09 May | jetBlue | ||
| 29 May | Icelandair | ||
| 31 May | Icelandair | ||
| 13 May | Air Serbia | ||
| 10 May | SWISS | ||
| 11 May | Lufthansa | ||
| 28 May | jetBlue |
Also check the deals for return flights from Chicago to Istanbul in May.
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