Berlin Brandenburg Airport Failure: Berlin Brandenburg Airport: How Governance, Design Changes and Technical Problems Drove Years of Delay

The airport suffered from hundreds of design changes after construction began, and the smoke extraction system failed acceptance inspection weeks before the planned 2012 opening, requiring fundamental redesign while construction continued. Political interference, inadequate project governance, and concurrent design-and-build processes created cascading failures that made the airport unsafe to open.

The original budget was approximately €2 billion. The final cost exceeded €7 billion, more than three times the original budget.

Berlin Brandenburg Airport was originally scheduled to open in October 2011. It finally opened on October 31, 2020 — nearly nine years late.

The primary issues were the smoke extraction/fire safety system (repeatedly redesigned after failing acceptance inspection), electrical wiring installed before diagrams were complete, inadequate passenger capacity in the main terminal, and a failed baggage handling system. These were governance failures, not engineering failures.

Multiple Berlin and Brandenburg state governments shared responsibility. Hartmut Mehdorn was one of several chief executives (2013–14); Berlin mayor Klaus Wowereit chaired the supervisory board during much of the delay. The root cause was political interference overriding engineering decisions, combined with no single accountable project owner.

Yes — BER has been open since 31 October 2020 and traffic has recovered strongly. The project's legacy lives on in the operating company's balance sheet: Flughafen Berlin Brandenburg GmbH still carries the debt the nine-year delay created.