Berlin Brandenburg Airport surrounding the three existing airports — Tegel, Schönefeld and Tempelhof. Therefore, it was mandatory for Tegel and Schönefeld to close (Tempelhof was already decommissioned in 2008) once Berlin's air traffic is concentrated at the new airport. By 2009 the construction cost was budgeted at €2.83 billion. FBB raised the financing for the project by a credit raising of €2.4 billion, a bank deposit of €430 million by the FBB partners and an additional €440 million of equity capital provided by FBB. During construction, it became clear that the airport would become significantly more expensive due to underestimating the actual costs,
Budaörs Airport Budaörs Airport Budaörs Airport (), is an airport located to the south-west of Budapest, Hungary. Now serving general aviation, it was once Hungary's only international airport. Until the opening of Budaörs, Budapest's main airport was Mátyásföld Airfield (), east of Budapest. This was a very small airfield, and a replacement was established at Budaörs, at the south-western limit of Budapest's city boundary. Half of the airfield is within the city boundary, and half in Budaörs, in Pest County. Planning for the airport started in 1935, and in 1936 design competitions for the terminal and main hangar were held. Construction started