Of Turkey’s 87 mainly state owned airports with paved runways, 16 have runways longer than 3,000 meters. Some 14 heliports were in operation in 2004. The three largest airports are located at Istanbul, Ankara, and Izmir. Istanbul Ataturk, the largest airport, was expanded in 2000, as was the primary tourist airport at Ankara. The state owned national airline, Turk Hava Yollari (THY, Turkish Airlines), is a state controlled enterprise that flies from Ankara and Istanbul to 79 international destinations, including major cities in Europe and the United States.