The research aimed to identify means to advance the air transport sector, address the challenges facing this sector's development, and encourage the development of airlines, airports, air navigation, and services provided to international civil aviation. It also aimed to estimate the demand function for air transport in the Libyan economy through Libyan Airlines and Afriqiyah Airways, Misurata branch, by verifying the validity of the impact of both the number of flights and ticket prices, in addition to the number of passengers. A descriptive approach was used to define the determinants of air transport demand and analyze the relationship between them. A quantitative approach was used to estimate the demand function. Among the most notable results: The determinants largely reflect their connection to the demand function, which confirms the validity of the hypothesis on which the research is based. Keywords: Demand function, air transport services, economic development