The main airport in South Africa, International Airport "O. R. Tambo" (IATA code JNB), is located near the city of Johannesburg. It is the busiest airport in Africa and a base of the national flag carrier "South African Airways". The airport serves a number of domestic and international flights and has two runways, one of which is the longest runway in the world. Furthermore, it has six terminals, divided into an inner, central and international area, which are interconnected. The terminals have everything one might need during the stay there. The airport can be reached by car or taxi, and by five bus lines and a railway connection.