The primary airport of Egypt's capital Cairo, Cairo International Airport ( CAI ) is located 15 km north-east of the city's business district. Operated by Cairo Airport Authority, Cairo International Airport has three asphalt paved runways and three passenger terminals. Free shuttle buses connect the three terminals and ply in every 30 minute round the clock. Cairo International Airport is the busiest airport in Egypt and handled 14,360,175 passengers in the year 2008. In fact, Cairo International Airport is the second busiest airport in Africa after South Africa's Johannesburg International Airport. Cairo International Airport is the main hub for EgyptAir, the national carrier of Egypt, which offers flight services for several domestic and international destinations.