The article highlights the potential of three key propulsion technologies - hydrogen combustion, hydrogen fuel cell, and battery-electric propulsion - to power conventional aircraft without generating in-flight CO2 emissions. Hybrid propulsion systems, incorporating range extenders powered by hydrocarbons such as SAF, are identified as crucial in reducing CO2 emissions for short-haul and regional flights compared to fossil alternatives, ultimately aiding the transition to zero in-flight carbon aviation. Europe's strong presence in the aircraft manufacturing industry positions it as a frontrunner in revolutionizing traditional aviation propulsion systems with these cutting-edge technologies. The continent's aeronautics sector, known as one of the largest globally, is set to compete in the international race towards developing zero-carbon flight, with the UK, Japan, and the US also joining the pursuit. Established European manufacturers and emerging companies focusing on innovative air mobility products are part of this transformation. Leveraging hydrogen and electric propulsion in aviation is expected to significantly boost CO2 abatement by 2050, providing a cost-effective and energy-efficient solution compared to other decarbonization options. This shift opens up new avenues for reducing aviation's non-CO2 warming impacts while enhancing local air quality and potentially diminishing noise pollution.