Damascus International Airport (Arabic: مَطَار دِمَشْق الدَّوْلِيّ, romanized: Maṭār Dimašq ad-Duwaliyy) (IATA: DAM, ICAO: OSDI) is the international airport of Damascus, the capital of Syria. Inaugurated in the mid-1970s, it also was the country's busiest airport. In 2010, an estimated 5.5 million passengers used the airport, an increase of more than 50% since 2004. The construction of the airport was entrusted in 1965 to a group of French companies (SCB, CSF, Spie and Cegelec), led by the SCB.