El Nuevo Dorado International Airport (BOG), a.k.a. El Dorado International Airport is located in the heart of Bogota. This airport accounts for at least 49% of the total air traffic in the country. Avianca, the national flagship carrier of Columbia, has international flights to and from many US and Mexican cities. Four domestic carriers fly between Columbian destinations. Its terminals are separated for domestic and international flights, a benefit to both types of passengers. Alamo, Thrify, Avis, Hertz, Budget and Enterprise all have rental counters at the airport. Duty free shopping is available, as is Wi-Fi Service, for a nominal fee.