Turkish Airlines is aiming to reach a decision on selecting a high-capacity aircraft by the end of this year,
Under the plan, which has already received board approval, Turkish Airlines intends to acquire five or six aircraft but has yet to choose between the Airbus A380 and the Boeing 747-8.
Chairman Hamdi Topcu says that the high-capacity aircraft is the "next step" following the airline's acquisition of 337-seat Boeing 777s.
"At the moment we are talking with Boeing and Airbus," he adds. Deliveries are planned for 2013-14.
Turkish Airlines is still intent on taking twin-engined long-haul aircraft, and is seeking around 20 Airbus A350s or Boeing 787s. The carrier took delivery recently of its first new 777-300ER, which will go into service on the Washington route this week.