Terminal 4 of Phoenix Sky Harbor International Airport (PHX) is home to the Turkish Airlines PHX Terminal. There are both domestic and international flights available, with the most popular route being to the airline’s primary hub in Istanbul. The airline offers Business Class passengers check-in desks, customer assistance, and access to first-class lounges. Due to its location in Terminal 4, Turkish Airlines has convenient access to other airline gates as well as the terminal’s facilities, including restaurants, shops, and passenger services. Fast transportation between the airport’s terminals is provided by the Sky Train. Turkish Airlines recommends that passengers arrive at least three hours before their overseas flight to guarantee seamless security and check-in processes.