The book analyzes the theoretical and practical implications of air transport growth determinants, airports’ cost and production efficiency, including labor use efficiency by taking their respective determinant factors. The findings and policy implications of each research work provide important inputs for government policymakers and air transport planners to consider the causality of economic growth versus airlines growth and other determinants, to take lessons on the proper resource allocation in the application of airport cost and production efficiency, human capital, investment cost, price of capital, and labor inputs during the development and expansion of airports and airlines.