Zagreb Airport (IATA: ZAG, ICAO: LDZA), also known as Pleso Airport after the nearby suburb of Pleso, is the main international airport of Croatia and also a Croatian Air Force and Defense major fighter jet base. Located 10 km from the central railway station in Zagreb, it served 2,071,561 passengers in 2010 and is the primary hub for Croatian flag carrier Croatia Airlines. Expansion of the airport is due to start in 2012.
The first airfield in Zagreb was built in 1909 near the western city neighbourhood of Crnomerec. It was used by Slavoljub Eduard Penkala for the airplanes he designed.