The airline industry accounts for approximately 3-3.5% of total greenhouse gas emissions worldwide. The main source of carbon emissions from airlines is from burning jet fuel during flights, which releases carbon dioxide (CO2) and other greenhouse gases into the atmosphere.
There have been efforts in recent year to reduce carbon emissions of the airline industry, including the use of more efficient aircrafts, the development of sustainable aviation fuels (SAF), and the implementation of carbon offsetting programs. SAF can be made from a variety of feedstocks, such as plant oils, agricultural and forestry residues, municipal waste, and algae. SAF can be used as a drop-in replacement for additional jetfuels or blended with them at various ratios. SAF has several advantages over traditional jet fuels. They have a lower carbon footprint and can reduce greenhouse gase emissions by up to 80% compared to conventional jet fuels.