AirHint found the following cheapest return flights from Houston (HOU) to Istanbul (IST) in April 2026 (see full year).
Return flights
| 02 Apr - 16 Apr | KLM | ||
| 25 Apr - 09 May | Turkish Airlines | direct | |
| 02 Apr - 16 Apr | Turkish Airlines | direct | |
| 29 Apr - 13 May | Turkish Airlines | direct | |
| 15 Apr - 25 Apr | Air France |
Also check the deals for one-way flights from Houston to Istanbul in April.
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