Jet fuel, also known as aviation turbine fuel (ATF), is specifically formulated for use in aircraft powered by gas-turbine engines. The most prevalent types of jet fuel used in commercial aviation are Jet A and Jet A-1, which adhere to a standardized international specification.

Jet A-1 is a kerosene-based fuel, suitable for a wide range of jet aircraft, including both civil and military planes, helicopters with turbine engines, turboprops, and compression-ignition piston engines.