AirHint found the following cheapest one-way flights from Constanta (CND) to Istanbul (IST) in September 2025 (see full year).
One-Way flights
| 05 Sep | Turkish Airlines | direct | |
| 28 Sep | Turkish Airlines | direct | |
| 10 Sep | Turkish Airlines | direct | |
| 24 Sep | Turkish Airlines | direct | |
| 04 Sep | Wizz Air UK |
Also check the deals for return flights from Constanta to Istanbul in September.
The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.
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