The much-delayed opening of the Berlin Brandenburg Airport costs an additional €35 million-€40 million ($46 million-$52.4 million) per month, the German newspaper Handelsblatt reported. Costs include airport maintenance work as well as necessary improvements at Berlin Tegel Airport, which has to operate longer than planned.

Berlin Brandenburg Airport CEO Hartmut Mehdorn told ATW recently he will announce a new opening date by June. He also said a city like Berlin needs a second airport such as Tegel.

According to the newspaper, costs for the new airport have reached €4.3 billion. If the airport opening is further delayed to the end of 2014, costs could rise to more than €5 billion.

The opening of the new airport, which was originally scheduled for June 2012, has been delayed four times.