Which type of fuel is commonly used in commercial jet engines?

Commercial jet engines primarily utilize Jet A or Jet A-1 aviation fuel, which are kerosene-based fuels specifically formulated for turbine engines. Jet A and Jet A-1 are the most widely used aviation fuels for commercial flights due to their desirable properties, such as low freezing points and high energy density. Jet A-1 is an internationally recognized standard that includes a wider range of temperature conditions suitable for various altitudes and climates, making it the preferred choice globally.

This type of fuel is engineered to provide efficient combustion, optimal performance, and reliability under varying flight conditions. It also has additives that help prevent ice formation and corrosion in the fuel system, further enhancing safety and operational effectiveness.

In contrast, gasoline, which is used for piston engines in general aviation, does not have the characteristics required for turbine operation. Biofuels, while gaining traction in the aviation industry for their environmental benefits, are not yet as commonly used as Jet A and Jet A-1 for mainstream commercial flights.