Washington Dulles International Airport is getting a $22.5 billion overhaul, the largest in its history. President Trump, Transportation Secretary Sean Duffy, the Metropolitan Washington Airports Authority, and United Airlines revealed the plan on July 29, more than tripling an earlier $7 billion modernization program and touching nearly every corner of the airport except its most famous one.
The headline casualty is the mobile lounge. The bus-like people movers that have shuttled passengers between the Main Terminal and the concourses since the 1960s are being retired for good, replaced by a new U-shaped AeroTrain line, a central pedestrian tunnel, and additional moving walkways. "They're slow, and people are angry about them. We are going to get rid of those," Duffy said.
Four new concourses built for larger aircraft will rise where Concourses C and D, which Trump called "basic disasters," now stand. All told, the plan delivers more than 5 million square feet of new and renovated terminal and retail space, including an international terminal that lets arriving passengers walk straight to Customs. A new garage near the Main Terminal will park 32,000 vehicles, a figure officials say makes it the largest parking structure in the world.
One thing does not change: Eero Saarinen's swooping 1962 Main Terminal, still one of the defining works of mid-century American airport architecture. Officials committed to preserving its historic exterior even as everything around it is rebuilt.
The money works differently, too. MWAA and the airlines serving Dulles, led by United, will finance the buildout primarily through low-interest municipal bonds rather than direct federal appropriations, though some elements of the plan still require congressional approval. The winning approach emerged from more than 30 proposals submitted after a Department of Transportation call to action in December.
Construction could break ground as early as spring 2027, rolling out in stages over several years while Dulles keeps flying. Momentum is already visible on the ground: the first segment of a separately funded Concourse E, adding 14 new United Airlines gates with direct AeroTrain access and new concessions, is set to open later this year.