Türk Hava Yolları A.O., Turkish Airlines (IATA "TK"), headquartered at Yeşilköy, Bakırköy, Istanbul carries the flag for the Republic of Turkey. A Star Alliance member.
- Primary hub airport: ist (Istanbul Atatürk Airport)
- Secondary hub airport: saw (Sabiha Gökçen International Airport, Istanbul)
- Focus city airports: adb (Adnan Menderes Airport, Izmir) and esb (Esenboğa International Airport, Ankara)
- Alliance: star-alliance
- Loyalty program: Miles & Smiles
- Lounge/club: CIP Lounge