The aviation industry's transition to a more sustainable future hinges on the adoption of synthetic sustainable aviation fuel (SAF) as biofuel supply falls short of the escalating demand for low-carbon alternatives. While biofuels face sustainability challenges, synthetic SAF emerges as a viable solution for decarbonization. This drop-in fuel can seamlessly blend with existing jet fuels, allowing for a gradual market transition towards greener options. Analysis indicates that synthetic SAF could potentially fulfill a significant portion of aviation energy requirements by mid-century, provided the market scales up promptly. The utilization of synthetic SAF is not only environmentally beneficial but also economically incentivized through credits, encouraging investments in key technologies like Direct Air Capture (DAC) and Fischer-Tropsch synthesis essential for the fuel's production. The legislative framework in Section 45Z outlines the eligibility criteria for credits applicable to both bio-based and synthetic SAF, ensuring compliance with carbon intensity standards while promoting sustainability. Furthermore, the definition of sustainable aviation fuel within this framework underscores the importance of synthetic fuels derived from non-kerosene sources that meet stringent quality standards. Synthetic aviation fuel production methods, including Fischer-Tropsch conversion and alcohol-to-jet technology, align with ASTM International standards, ensuring their viability as sustainable alternatives to fossil fuels. By bypassing the restrictions on co-processing with biomass, synthetic SAF offers a versatile and promising pathway towards reducing aviation emissions. In conclusion, synthetic SAF stands out as a key enabler of aviation decarbonization, offering a feasible and sustainable solution to mitigate the industry's carbon footprint amidst increasing energy demands. The proactive adoption of synthetic fuels and the supportive legislative environment exemplified by Section 45Z signal a promising trajectory towards a cleaner and greener aviation sector.