Athens International Airport Eleftherios Venizelos (Greek: Διεθνής Αερολιμένας Αθηνών «Ελευθέριος Βενιζέλος», Diethnís Aeroliménas Athinón “Elefthérios Venizélos”), commonly initialised as AIA (IATA: ATH, ICAO: LGAV), is the largest international airport in Greece, serving the city of Athens and region of Attica. It began operation on 28 March 2001 (in time for the 2004 Summer Olympics) and is the main base of Aegean Airlines, as well as other smaller Greek airlines. It is located near the old Ellinikon International Airport.  Athens International is currently a member of Group 2 of Airports Council International (10–25 million); as of 2018, it is the 27th-busiest airport in Europe.
AIA is located between the towns of Markopoulo, Koropi, Spata and Loutsa, about 20 km (12 mi) to the east of central Athens (30 km (19 mi) by road, due to intervening hills). The airport is named after Elefthérios Venizélos, the prominent Cretan political figure and Prime Minister of Greece, who made a significant contribution to the development of Greek aviation and the Hellenic Air Force in the 1930s. As to-date, the airport is operated by AIA S.A. and ownership is divided between the Hellenic Republic (Greek State) and Private Sector in a 55%-45% stake following a PPP scheme for the airport company. Currently, private investors include the Copelouzos Group (5%) and PSP Investments of Canada (40%), following purchase of Hochtief’s shares.