AirHint found the following cheapest return flights from Houston (IAH) to Istanbul (IST) in October 2026 (see full year).
Return flights
| 20 Oct - 03 Nov | KLM | ||
| 23 Oct - 06 Nov | KLM | ||
| 20 Oct - 03 Nov | Turkish Airlines | direct | |
| 23 Oct - 06 Nov | Turkish Airlines | direct |
Also check the deals for one-way flights from Houston to Istanbul in October.
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