Airports play a vital role as gateways to nations, but their expansion has led to a significant increase in CO2 emissions. To address this, sustainable master planning is crucial for balancing growth with environmental sustainability. Leading airports are taking proactive steps by integrating sustainability into their plans, adopting renewable energy sources, and aiming to align with global climate targets. Stricter regulations and community concerns are also driving airports to prioritize decarbonization and reduce their environmental impact. By investing in sustainability, airports can benefit from increased economic resilience, reduced operational costs, enhanced passenger satisfaction, and mitigation of climate change risks. Strategies for sustainable development in aviation include operational efficiency enhancements, the adoption of sustainable aviation fuels, electrification of ground operations, and the eventual deployment of hydrogen-powered aircraft. Incorporating modularity and flexibility into master plans allows airports to adapt to evolving technologies and meet decarbonization targets effectively.