AirHint found the following cheapest one-way flights from Constanta (CND) to Istanbul (IST) in October 2025 (see full year).
One-Way flights
| 29 Oct | Turkish Airlines | direct | |
| 31 Oct | Turkish Airlines | direct | |
| 28 Oct | Wizz Air UK | ||
| 30 Oct | Wizz Air UK | ||
| 26 Oct | Turkish Airlines | direct |
Also check the deals for return flights from Constanta to Istanbul in October.
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