The aviation industry is undergoing a significant transformation towards sustainability, driven by the need to reduce reliance on fossil fuels and combat climate change. While the automobile industry has made strides in adopting electric engines, the aviation sector faces challenges due to the density of batteries required for current technology. However, Swedish researchers are working on developing 30-seater electric airplanes by 2030 and have projects, like the one by Heart Aerospace in Gothenburg, aiming for operational hybrid electrical commercial airplanes. The use of hydrogen as an alternative engine solution is also gaining traction, with Säve Airport in Gothenburg set to welcome such aircraft. Additionally, German researchers are exploring biofuels made from microalgae to power jet engines, with the potential to significantly reduce emissions in the aviation industry. Despite challenges such as high costs in algae fuel conversion, these initiatives showcase a positive outlook for the future of sustainable air travel.