The state-of-the-art international airport is Africa’s biggest and busiest airport, facilitating over 21 million passengers a year. It is situated in the Kempton Park district of Johannesburg, 23 km north-west of the city centre and 46 km south of Pretoria city centre. O.R. Tambo International Airport is one of the few airports in the world with scheduled passenger direct flights between all 6 inhabited continents and also serves as a continental gateway to many sub-Saharan countries.