Colombia has a network of national highways maintained by the Instituto Nacional de Vías or INVIAS (National Institute of Roadways) government agency. The Pan-American Highway travels through Colombia, connecting the country with Venezuela to the east and Ecuador to the south.
Colombia's principal airport is El Dorado International Airport in Bogotá. Several national airlines (Avianca, AeroRepública, AIRES and SATENA), and international airlines (such as Iberia, American Airlines, Varig, Copa, Continental, Delta, Air Canada, Aerogal,TAME, TACA) operate from El Dorado. Bogotá's airport is one of the largest and most expensive in Latin America. Because of its central location in Colombia and America, it is preferred by national land transportation providers, as well as national and international air transportation providers.