Mexico City country and international connections. There are some intercity buses that leave directly from the Mexico City International Airport. Mexico City is served by Mexico City International Airport (IATA Airport Code: MEX). This airport is Latin America's busiest, with daily flights to United States and Canada, Mexico, Central America and the Caribbean, South America, Europe and Asia. Aeroméxico (Skyteam) is based at this airport, and provide codeshare agreements with non-Mexican airlines that span the entire globe. The airport is also a hub for Volaris, Interjet and Aeromar. In 2016, the airport handled almost 42 million passengers, about 3.3 million more than
Mexico City Metro lines closed because of security risks for the passengers because of rail corrugation. An investigation determined rails were incompatible with the trains, accusations of corruption arose and former Mayor Marcelo Ebrard left the country to avoid prosecution. After 18 months line was repaired and resumed service. <br> Mexico City Metro lines The Mexico City Metro is the largest and busiest heavy-rail rapid transit system in Mexico and second in North America, only behind the New York City Subway. , the system is composed of 12 lines denominated 1 through 9, 12, A and B, totalling of track length and 195 stations.