Hamad International Airport replaces Doha International Airport
Hamad International Airport (IATA: DOH, ICAO: OTHH) (Arabic: مطار حمد الدولي, Maṭār Ḥamad al-Duwalī) is an international airport in the State of Qatar, and the home of Qatar’s flag carrier airline, Qatar Airways. Located east of its capital, Doha, it replaced the nearby Doha International Airport as Qatar's principal and main national airport. 
Formerly known as New Doha International Airport (NDIA), Hamad International Airport was originally scheduled to open in 2008, but after a series of costly delays, the airport finally opened six years overdue on 30 April 2014 with a ceremonial Qatar Airways flight landing from nearby Doha International. Qatar Airways and all other carriers formally relocated to the new airport on 27 May 2014. The airport is named after the previous Emir of Qatar, Hamad bin Khalifa Al Thani.History
Planning and construction
By the end of the 20th century, Doha International Airport (DIA) was over 40 years old and in need of major upgrades. However, lack of available land meant DIA expansion would be difficult, especially the inability to add a much-needed second runway. The planning started for a new state-of-the-art airport in 2003 while the construction began in 2005. The site of the airport (terminal and runway) lies 5 kilometres (3.1 mi) east of the older Doha International Airport. It is spread over an area of 2,200 hectares (5,500 acres), and was set to initially serve airlines that will not utilize lounge access.
Hamad International Airport was designed to cater for a projected ongoing increase in the volume of traffic. The airport has an initial annual capacity of 29 million passengers, three times the current volume. Upon completion, it will be able to handle 50 million passengers per year, although some estimates suggest the airport could handle up to 93 million per year, making it the second largest airport in the region after Dubai. It is also expected to handle 320,000 aircraft movements and 2 million tonnes of cargo annually. The check-in and retail areas are expected to be 12 times larger than those at the current airport. The airport will be two-thirds the size of Doha city. The airport has an oasis theme. Many of the buildings have a water motif, with wave-styled roofs and desert plants growing in recycled water. The airport is built over 22 square kilometres (8.5 sq mi), half of which is on reclaimed land.The Steering Committee awarded the contract for the development of the airport to Bechtel. The contract includes the design, construction management and project management of the facilities. The terminal and concourses were designed by the architecture firm HOK. Engineering, Procurement and Construction contract for Phase I and II were undertaken by Turkish TAV Construction and Japanese Taisei Corporation.