A shift towards hydrogen-fuel airliners is on the horizon, with projections indicating a potential replacement of traditional jet-fuel aircraft on shorter routes globally within the next two decades. The aviation industry eyes hydrogen as the future sustainable fuel, driven by its potential to significantly reduce carbon emissions. While challenges like lower energy density, lack of existing infrastructure, and higher costs compared to jet fuel exist, efforts to overcome these hurdles are underway. Companies like Honeywell envision a future where conventional jet aviation fuel will diminish over the next 20 to 30 years, paving the way for hydrogen-powered aircraft to dominate short-haul flights. This transition aligns with the broader industry goal of achieving net-zero carbon emissions by 2050. Milestones are set for testing hydrogen fuel cell demonstrators and introducing commercial hydrogen-powered aircraft by 2035. Hydrogen's appeal lies in its emission of only water, contrasting with the various pollutants emitted by conventional fuels. The capacity to produce 'green hydrogen' using renewable sources like wind and solar is a focal point for sustainable aviation. Despite the engineering challenges posed by the lower energy density of hydrogen compared to jet fuel, the industry remains committed to the shift towards cleaner aviation. The European Union stands out for its substantial investments in hydrogen-powered aircraft, surpassing similar efforts in the US. As the aviation sector navigates towards 'green hydrogen,' the prospects for a cleaner and quieter aviation future are gaining momentum.