In the endeavour to mitigate greenhouse gas emissions, the aviation sector warrants significant consideration, as it accounts for 2% of global emissions. Due to current technological limitations hindering the feasibility of transitioning to electric or hydrogen propulsion, the viable path forward lies in sustainable fuels. Within this framework, the potential of biochar for carbon dioxide sequestration emerges, thereby reducing fuel emissions. This study aims to assess its economic feasibility within the contexts of European and international legislation. Economic analysis was conducted using MATLAB and Excel models, comparing fuel prices and the cost of necessary credits, while also considering various feedstocks. Additionally, a scenario was developed for an airline through 2030, exploring potential decarbonization alternatives.