Cairo International Airport is the international airport of Cairo and the busiest in Egypt (about 16.5 million passengers in 2016) and serves as the primary hub for EgyptAir, EgyptAir Express and Nile Air as well as several other airlines.
During World War II, the United States Army Air Forces built Payne Airfield to serve the Allied Forces. When American forces left the base at the end of the war, the Civil Aviation Authority took over the facility and began using it for international civil aviation. In 1963, Cairo International Airport replaced the old Heliopolis Airport.
Source; Wikipedia
