AirHint found the following cheapest return flights from Chicago (MDW) to Istanbul (IST) in August 2026 (see full year).
Return flights
| 24 Aug - 07 Sep | Delta | ||
| 16 Aug - 23 Aug | Delta | ||
| 17 Aug - 31 Aug | Delta | ||
| 27 Aug - 06 Sep | Frontier Airlines | ||
| 20 Aug - 20 Sep | KLM | ||
| 06 Aug - 13 Aug | KLM |
Also check the deals for one-way flights from Chicago to Istanbul in August.
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