About 6,474 miles.
The distance is about air 6,843 miles.
according to wiki: http://en.wikipedia.org/wiki/Buenos_Aires The city of Buenos Aires was first established as Ciudad de Nuestra Señora Santa María del Buen Ayre (literally "City of Our Lady...
Avenida 9 de Julio
People from Buenos Aires city proper are called porteños (people of the port)