Doha International Airport is an airport in Doha, Qatar. It was Qatar's commercial international airport until Hamad International Airport opened on 27 May 2014. While all scheduled commercial traffic ceased, the airport site and existing runway is still used by Qatar Emiri Air Force, Rizon Jet and Gulf Helicopters.HistoryThe airport suffered from overutilization, even though it had been expanded numerous times. Before the opening of the new airport, the capacity stood at 12 million passengers per year. Its 14993ft runway was one of the longest at a civil airport. It was the main base of Qatar Airways. In the past, the airport was mostly used by Qatari holiday makers and foreign workers coming for the oil and gas sector. As Qatar Airways expanded more rapidly, the airport grew and attracted more people such as holiday makers and transit travelers. In 2010, it was the world's 27th busiest airport by cargo traffic. The control tower and ancillary buildings were designed by Curtis W. Fentress, FAIA, RIBA of Fentress Architects.All scheduled commercial air traffic serving this airport moved to the new Hamad International Airport on 27 May 2014. The new airport is located 4km east of the former facility. It covers 2200ha of land and was able to handle 29 million passengers per year on opening day. The old airport will be demolished and redeveloped as a new urban project called Al Sahan City.