Commercial air travel, while a vital aspect of global connectivity, poses challenges to the environment due to its significant contribution to CO2 emissions. In response, the UK government has set ambitious targets for achieving net zero carbon emissions from air travel by 2050 and pioneering net zero transatlantic flights. Imperial College London is actively engaged in supporting sustainable aviation through initiatives like the Brahmal Vasudevan Institute. Researchers, led by Professor Rafael Palacios, are exploring innovative airplane designs with long, thin wings for enhanced fuel efficiency. These changes could revolutionize aircraft aerodynamics, providing a pathway to more sustainable flying. Additionally, advancements in engine design, exemplified by the Airbus A320neo, showcase significant fuel savings. To further reduce carbon emissions, the aviation industry is looking towards alternative fuels such as biofuels, synthetic fuels, and hydrogen. These fuels offer the potential to mitigate environmental impact and, in some cases, actively remove CO2 from the atmosphere. However, challenges persist in terms of scalability, readiness, and cost-effectiveness, particularly in international biofuel production policies. The collective efforts of academia, industry, and policymakers are crucial in realizing a future of environmentally friendly and sustainable air travel.