Shortly after takeoff from Guinea's capital, Conakry to Istanbul via Quagadougou, cabin crew on the Boeing 737 helped Nafi Diaby, who was 28 weeks pregnant, give birth to a baby girl.
The airline took to Twitter on Friday to announce the arrival. "It's a girl" the statement read. "Welcome on board Princess!"
The mother had earlier complained of birthing pains while the plane cruised between the Guinean capital Conarky and Ougadougosu in Burkina Faso, according to the airline.
The airline added the cabin crew then rushed to help deliver the baby, who was named Kadiju.
Pictures showed crew gathered around the mother, Nafi Diaby, as she lay across a row of seats.
The airline said that on arrival in the Burkina Faso capital the pair were taken to hospital. Both mother and daughter were in good health, the airline.
Turkish Airlines allows expectant mothers to fly up to their 28th week of pregnancy without a doctor's report.