Unfortunately, there is no way to get there without a transfer from Sochi to Istanbul. But, if you really want to travel by sea, you can go by ferry from Sochi to the Turkish port of Trabzon (Trabzon), formerly known as Trapezund. Vessels go to him three times a week and go from 3.5 to 12 hours, depending on the type of transport. The ferry ticket costs 3,500-5,000 rubles from an adult.

From Trabzon to Istanbul in 18 hours and about 60 Turkish liras (26 euros) can be reached by bus. The airplane will be faster and more comfortable, although more expensive, but ferry services between these two cities are temporarily stopped.