Most travelers arrive to Mexico City by air, to the Benito JuÃ¡rez International Airport , located in the eastern part of the city. There are frequent flights to and from most larger cities in the world, as Amsterdam, Buenos Aires, Sao Paulo, Santiago de Chile, London, Paris, Madrid, Frankfurt, Chicago, Toronto and Tokyo. Some of the international airlines that operate regular flights to Mexico City include (as of April 2007): Aerolineas Argentinas, Aeromexico, Air Canada, Air France, Alaska Airlines, American Airlines, Avianca, British Airways, Continental Airlines, Copa, Cubana de Aviacion, Delta, Iberia, Japan Airlines, KLM, LAN, Lloyd Aereo Boliviano (recently grounded), Lufthansa, Mexicana, Northwest, TACA, Varig, Ocean Air, United Airlines and US Airways. The airport has a plane spotting area. To reach it, take the subway and go to the Terminal Aerea station.
As of January 16, 2008, a new terminal, Terminal 2, opened at Benito Juarez. If you are flying in or out of the city check with your airline as to what terminal you should use for ticketing and check-in. Give yourself extra time to make your flight to avoid confusion.