The aviation industry's goal of achieving net-zero carbon emissions by 2050 has put a spotlight on Sustainable Aviation Fuel (SAF) as a key solution to decarbonize air travel. SAF, derived from materials like used cooking oil and waste, offers the potential to significantly reduce greenhouse gas emissions by up to 94% compared to traditional jet fuel. HEFA SAF, produced from vegetable oils and waste, currently dominates commercial-scale SAF production, offering a cost-effective and efficient pathway for decarbonization. AtJ SAF, made from ethanol, faces challenges with carbon intensity variations and regulatory limitations, while PtL SAF, synthesized from renewable hydrogen and captured CO2, shows promise as a carbon-neutral alternative despite cost barriers. Companies like World Energy are actively investing in improving SAF production methods, such as enhancing the HEFA process to reduce carbon intensity and exploring PtL production for the future. With the aviation industry making strides towards incorporating alternative fuels, SAF remains a critical component in securing a greener future for air travel as technologies evolve and biofuel sectors expand.