Airports: Islamabad is connected to major destinations around the world through Benazir Bhutto International Airport, previously known as Islamabad International Airport. The airport is the third largest in Pakistan and is located outside Islamabad, in Chaklala, Rawalpindi. In fiscal year 2004–2005, over 2.88 million passengers used Benazir Bhutto International Airport and 23,436 aircraft movements were registered. Islamabad Gandhara International Airport is under construction atFateh Jang to cope with the increasing number of passengers. When completed, the airport will be the largest in Pakistan. The airport will be built at a cost of $400 million and is expected to be complete and operational by 2014. This will be the first green field airport in Pakistan with an area of 3,600-acre (15 km2).
The Rawalpindi-Islamabad Metrobus is a 24 km (14.9 mi) bus rapid transit system that serves the twin cities of Rawalpindi and Islamabad in Pakistan. It uses dedicated bus lanes for all of its route covering 24 bus stations. It has e-ticketing system and high graded bus stations. Monorail: Federal government has also planned to build a monorail system in the city.
All major cities and towns are accessible through regular trains and bus services running mostly from the neighbouring city of Rawalpindi. Lahore and Peshawar are linked to Islamabad through a network of motorways, which has significantly reduced travelling times between these cities. M-2 Motorway is 367 km (228 mi) long and connect Islamabad and Lahore. M-1 Motorway connects Islamabad with Peshawar and is 155 km (96 mi) long. Islamabad is linked to Rawalpindi through the Faizabad Interchange, which has a daily traffic volume of about 48,000 vehicles. Rawalpindi-Islamabad Metrobus Service was inaugurated in February 2014 and the work is scheduled to complete in 2015.
Islamabad expressway is a 10- lane highway that connects the city to GT road at Rawat as well to Bahria Town and DHA. Islamabad City is serving by Margalla Railway Station which was renamed now as Islamabad railway station.Recently On May 15th 2015, New Express Train Named “GreenLine” has been introduced.The train will daily leave Islamabad(Margalla) for Karachi and from Karachi to Islamabad(Margalla), Also nearby Rawalpindi railway station that allows travel to every major city in Pakistan. In addition to freight, Pakistan Railways provides passenger rail service throughout the day, with train coaches that have air-conditioning in first-class. The routes the British built from Rawalpindi, which contained a major military base, linked to Lahore, Karachi, Peshawar, Quetta, Multan, Faisalabad, Hyderabad, Sindh,Sukkur, Bahawalpur, Jhelum, Gujrat, Gujranwala, Kohat, Khanewal, Nawabshah, Nowshera and the Malakand Pass.