El Nuevo Dorado International Airport (IATA: BOG, ICAO: SKBO), previously called El Dorado International Airport, is an international airport located in Bogotá, Colombia. It is the largest Latin American airport in terms of cargo movements 578,812 tons (2008) and the fourth in terms of passenger traffic, only behind Mexico City's Benito Juarez International Airport, São Paulo-Guarulhos International Airport and Congonhas-São Paulo Airport; transporting 13,456,331 passengers in 2008; as well as the largest airport in Colombia and the main international and domestic air gateway in the country, serving as an important hub for Avianca (the national flag carrier of Colombia), AeroRepública, Aires, EasyFly and other important Cargo Companies. It is managed by Opain (acronym of Operadora Aeroportuaria Internacional), a consortium composed of Colombian construction / engineering firms and the Swiss Flughafen Zürich AG. Opain will also operate the airport for the next 20 years. El Dorado is, politically and economically, the most important airport in Colombia and serves as the nation's primary international gateway, accounting for 49% of the total air traffic in the country.