Climate change poses a significant global challenge and the aviation industry, a major contributor to greenhouse gas emissions, must address its environmental impact. As the demand for air travel continues to rise, transitioning to sustainable forms of aviation becomes crucial. This paper focuses on the challenges and opportunities associated with implementing full electric aircraft at regional airports, using Rotterdam the Hague Airport (RTHA) asa case study. The research aims to determine the optimal infrastructure sizing of RTHA and provide insights into the integration of electric aviation. A novel mixed integer linear programming (MILP) model is proposed to optimize the charging schedule and determine the required number of charging stations and electricity grid capacity. The study considers different scenarios of electric aviation uptake, aircraft types, charger types, and spatial aspects of charging locations. The findings offer comprehensive recommendations for regional airport infrastructure planning and address uncertainties through sensitivity analysis.