Jat Airways (Serbian pronunciation: [jât]) was the national flag carrier and largest airline of Serbia, and formerly Yugoslavia. Originally founded in 1927 as Aeroput, the airline ceased operations during World War II. After resuming flights in 1947, the airline was renamed JAT Jugoslovenski Aerotransport on 1 April 1947. The airline was renamed again in 2003. Jat Airways and their predecessors were one of the oldest airlines still in operation. Flight operations were based at Belgrade Nikola Tesla Airport, and the airline operated scheduled services to 72 international destinations, outside the areas formerly part of Yugoslavia, as well as charters and wet leases. Jat Airways was owned by the government of Serbia and had 1,250 employees.
On 1 August 2013, the Government of Serbia and Etihad Airways entered into an agreement which saw the operations of Jat Airways reorganized and rebranded into Air Serbia after the transitional period ended. Certain assets, such as the ATR 72 aircraft will be transitioned to Air Serbia while other assets (such as the 737-300s) will remain in JAT Airways branding until retired. The change had marked the end of 66 years of the JAT brand.