 Even though Buenos Aires is the most important flight hub, for both economical and geographical reasons, there are flights between important cities, such as Córdoba, Rosario and Mendoza.Following the re-nationalisation of Aerolíneas Argentinas, most domestic routes are handled by its subsidiary Austral which has a fleet of 22 new Embraer aircraft which operate from the subsidiary's hub in Aeroparque Jorge Newbery, Buenos Aires' domestic airport.Argentina had a total of 1,138 airports (including airstrips) in the country in 2013, the 6th highest in the world.