AirHint found the following cheapest one-way flights from Constanta (CND) to Istanbul (IST) in August 2025 (see full year).

One-Way flights

20 Aug	Turkish Airlines	direct
27 Aug	Turkish Airlines	direct
24 Aug	Turkish Airlines	direct
22 Aug	Turkish Airlines	direct
17 Aug	Turkish Airlines	direct
26 Aug	Wizz Air UK
28 Aug	Wizz Air UK
29 Aug	Turkish Airlines	direct

Also check the deals for return flights from Constanta to Istanbul in August.

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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Cheapest one-way flights from Constanta to Istanbul in August from 77€

One-Way flights