Like vehicles, aircraft can use various fuels, but two are the most common – Jet Fuel and AVGAS. Generally, private jets, commercial airplanes, and aviation aircraft widely use and depend on Jet Fuel and AVGAS to function efficiently.

Private jets almost exclusively use Jet A or Jet A-1, which are kerosene-based fuels specifically refined for turbine engines. Jet A is the standard in the United States, while Jet A-1 is the international standard (it has a lower freezing point of -47°C compared to Jet A's -40°C). In 2026, there is a massive industry shift toward Sustainable Aviation Fuel (SAF), which is often blended with traditional Jet A. SAF is made from renewable resources like used cooking oil, plant fats, or agricultural waste and can reduce life-cycle carbon emissions by up to 80%. It is important to note that private jets do not use "Avgas" (Aviation Gasoline), as that is intended for smaller, piston-engine propeller planes. Because jet engines operate at extremely high altitudes where temperatures drop significantly, their fuel must be highly stable and resistant to freezing or wax formation, which is why refined kerosene remains the primary component.