It also boasts a network of motorways, encompassing both ring roads and radial roads, and provides the backbone for Spain’s railway network, thereby providing effective connections with not only other parts of the region, but also the rest of Spain and Europe as a whole. Madrid ranks alongside Tokyo and Paris as one of the world’s three largest high-speed railway hubs. Madrid is also home to the Madrid-Barajas airport, Spain’s flagship airport and one of the largest to be found worldwide.

Air

Madrid is served by Barajas Airport. Barajas is the main hub of Iberia Airlines. It consequently serves as the main gateway to the Iberian peninsula from Europe, America and the rest of the world. Current passenger volumes range upwards of 49.8 million passengers per year, making it the country's largest and busiest airport, and in 2009 it was the world's 11th busiest airport and Europe's fourth busiest airport. Given annual increases close to 10%, a new fourth terminal has been constructed. It has significantly reduced delays and doubled the capacity of the airport to more than 70 million passengers per year. Two additional runways have also been constructed, making Barajas a fully operational four-runway airport.

Located within the city limits of Madrid, just 9 km (5.6 mi) from the city's financial district and 13 km (8.1 mi) northeast of the Puerta del Sol, Madrid's historic centre. The airport name derives from the adjacent district of Barajas, which has its own metro station on the same rail line serving the airport.

The Councillor of Transports of the Community of Madrid, Manuel Lamela, announced in 2007 that the city will also be served by two new airports which are expected to be fully operative in 2016, the first of which will be located in Campo Real, it will be initially be used for cargo flights, but also as hub for low-cost carriers, and the second one, expected to be built between the two municipalities of El Álamo and Navalcarnero, which will only take over the routes operating in Cuatro Vientos Airport.

National rail

Spain's railway system, the Red Nacional de Ferrocarriles Españoles (Renfe) operates the vast majority of Spain's railways. Cercanías Madrid is the commuter rail service that serves Madrid and its metropolitan area. It is operated by Cercanías Renfe, the commuter rail division of Renfe. The total length spans 339.1 km. Main rail terminals are Atocha in the south and Chamartín in the north.

The most important project in the next decade is the Spanish high speed rail network, Alta Velocidad Española AVE. Currently, an ambitious plan includes the construction of a 7,000 kilometre (4,350 mi) network, centred on Madrid. The overall goal is to have all important provincial cities be no more than 4 hours away from Madrid, and no more than 6 hours away from Barcelona. As of 2008, AVE high-speed trains link Atocha station to Seville, Málaga, Córdoba, Ciudad Real and Toledo in the south and to Cuenca, Albacete, Valencia, Zaragoza, Lleida, Tarragona and Barcelona in the east. AVE trains also arrive from Valladolid in the north.

Metro

Serving a population of some four million, the Madrid Metro is one of the most extensive and fastest-growing metro networks in the world.[82] With the addition of a loop serving suburbs to Madrid's south-west "Metrosur", it is now the second largest metro system in Western Europe, second only to London's Underground. In 2007 Madrid's metro system was expanded and it currently runs over 283 kilometres (176 miles) of line. The province of Madrid is also served by an extensive commuter rail network of 370 kilometres (230 miles) called Cercanías.

The system is the sixth longest metro in the world after London, New York, Moscow, Seoul and Shanghai, though Madrid is approximately the fiftieth most populous metropolitan area in the world. Its fast growth in the last 20 years has also put it among the fastest growing networks in the world, on par with the Shanghai Metro and the Beijing Subway. Unlike normal Spanish road and rail traffic, Madrid Metro trains use left-hand running on some lines due to historical reasons.

Buses

This railway network is ably supported by an ever-expanding network of city buses. The overall length of the bus network of Madrid’s Municipal Transport Corporation (Empresa Municipal de Transportes, or EMT) at yearclose 2008, when 426 million passengers were transported, stood at 3,690 kilometres, marking a 31% increase over the last eight years. These routes are serviced by a growing fleet of over 2,000 vehicles, while the network as a whole is undergoing a continuous improvement process with a view to attaining the utmost standards of speed, quality and sustainability.

Roads

Madrid is the most important hub of Spain's motorway network and is surrounded by four orbital motorways: M30, M40, M45 and M50. M30 circles the central districts and is the inner ring motorway of Madrid. Significant portions of M30 runs underground and its urban motorway tunnels have sections of more than 6 km (3.73 mi) in length and 3 to 6 lanes in each direction, between the south entry of the Avenida de Portugal tunnel and the north exit of the M-30 south by-pass there are close to 10 km (6.21 mi) of continuous tunnels. M40 is a ring motorway which borders Madrid at a mean distance of 10.07 kilometres (6.26 mi) and it has a total length of 63.3 km (39.33 mi). M45 is a partial ring around the city serving the metropolitan area of Madrid. It was built to help alleviate the congestion of the M40 from the southern to the north-eastern, runs between the M40 and the M50 where the two ring motorways are more separated. M50 is the outer of the Madrid orbital motorways and has a total length of 85 km (52.82 mi). It services mainly the metropolitan area at a mean distance of 13.5 km (8.39 mi).