The aviation industry is exploring cleaner alternatives, including hydrogen, electricity, and sustainable aviation fuels, to reduce greenhouse gas emissions. Despite the potential of hydrogen and electric aircraft, they are seen as complements rather than replacements for jet-fueled airliners. The use of sustainable aviation fuels and renewable energy sources is expected to play a vital role in reducing emissions in the industry. Aircraft makers are investing in hydrogen-powered and electric planes, with collaborations between airlines and companies like ZeroAvia. Sustainable aviation fuels are preferred for international routes, while hydrogen shows promise for reducing emissions and supporting longer flights. Aircraft weight plays a crucial role, with hydrogen offering a lighter alternative to kerosene. Experts predict that hydrogen fuel cell aircraft will take off within a decade, with significant performance improvements by 2035 or 2040, showcasing a positive shift towards more environmentally friendly aviation solutions.