The deceased who were Ukrainian citizen identified as flight engineer Kulish Nolri, 40, Navi Tre Kaltruv, 45, and Co-Pilot Julu Deemer.
The AN-26 transport aircraft, operated by True Aviation, crashed at Naziratek Point, five kilometres off the beach town.
The accident occurred around 9:30am on Wednesday, minutes after the plane took off, according to Cox’s Bazar Airport Manager Shadhan Kumar Mohanto.
Cox’s Bazar Deputy Commissioner Md Ali Hossain and True Aviation’s Station Manager SM Hasnat Jahan said the crew of the plane comprised Ukrainians.
The Coast Guard and local fishermen began a search and rescue operation immediately after the plane crashed almost a kilometre off the beach.
Personnel from the navy and Fire Service later joined the rescue effort.