Simple Flying
Prachi Patel
28 August 2025
Chicago O’Hare International Airport has finally broken ground on a long-awaited new concourse. The $1.3 billion expansion, known as Concourse D, marks the airport’s first major terminal construction in years. The project has faced repeated delays since it was first announced in 2018.
The new Concourse D was designed by Chicago-based Skidmore, Owings & Merrill (SOM) in collaboration with Ross Barney Architects, Juan Gabriel Moreno Architects, and Arup. It will span 590,000 square feet across three levels and add 19 gates to O’Hare. Most are planned for narrowbody aircraft, though 18 of them can be combined into nine positions for larger widebodies, according to the Office of the Mayor.
In addition, the concourse will feature more than 20,000 square feet of lounge space, 30,000-square feet of retail and dining, and a 450-square-foot children’s play area. At the north end, it will also have a 40-foot-high atrium featuring an oculus skylight, which is designed to bring natural daylight to all three levels of the concourse. Besides, the new facility will also connect directly to Concourse C through a bridge.
Chicago O'Hare Breaks Ground on $1.3 Billion Concourse D Expansion
