AirHint found the following cheapest return flights from Chicago (ORD) to Istanbul (SAW) in October 2026 (see full year).
Return flights
| 03 Oct - 14 Oct | Aer Lingus | ||
| 08 Oct - 31 Oct | Icelandair | ||
| 04 Oct - 14 Oct | KLM | ||
| 04 Oct - 15 Oct | KLM | ||
| 16 Oct - 23 Oct | SWISS | ||
| 17 Oct - 24 Oct | Scandinavian Airlines |
Also check the deals for one-way flights from Chicago to Istanbul in October.
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