Willy Brandt International Airport, south of the German capital, was originally due to go into service in June 2012 but has been plagued with problems.

CNN: STORY HIGHLIGHTS

Willy Brandt International Airport, named for Germany's famed Cold War leader, was supposed to have been up and running in late 2011, a sign of Berlin's transformation from Cold War confrontation line to world class capital of Europe's economic powerhouse.

NPR: Berlin's Airport Project Delays Shame Germans