AirHint found the following cheapest one-way flights from Boston (BOS) to Istanbul (IST) in May 2026 (see full year).
One-Way flights
| 02 May | Aer Lingus | ||
| 20 May | Iberia | ||
| 25 May | Aer Lingus | ||
| 20 May | Turkish Airlines | direct | |
| 02 May | Turkish Airlines | direct | |
| 25 May | Turkish Airlines | direct |
Also check the deals for return flights from Boston to Istanbul in May.
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