Chicago is pressing ahead with the $8.8 billion ORDNext modernization program at O’Hare International Airport, including the airport’s first new concourse in more than three decades.
Chicago Department of Aviation Commissioner Michael McMurray said the program remains on track as construction advances on Concourse D. The project is designed to modernize an aging terminal complex, add flexible gates and improve connections between domestic and international flights.
The official schedule has not changed, but the program’s size and multiyear construction window are renewing questions about how costs will be controlled—and what happens if labor, materials or design changes push the bill higher.
What Chicago is building at O’Hare
ORDNext is the centerpiece of O’Hare’s terminal redevelopment. The plan includes two satellite concourses, a new O’Hare Global Terminal replacing Terminal 2 and an underground connection for passengers, baggage and airport utilities.
Concourse D is the first major component. Chicago prices the concourse at approximately $1.4 billion. It will span about 590,000 square feet and add 19 gates capable of handling domestic and international flights as well as different aircraft sizes.
The Chicago Department of Aviation’s latest legislative guide lists 2028 as the estimated completion year for Concourse D. The broader terminal program will continue beyond that milestone, making cost management a long-term concern rather than a single construction-season issue.
Why O’Hare needs more modern gate space
O’Hare already has one of the world’s most capable airfields, but its terminal facilities have not developed at the same pace. The airport had 199 gates as of April 2026, according to city data, with United Airlines leasing 99 and American Airlines leasing 66.
New gates can improve more than headline capacity. Modern layouts allow airlines to accommodate a wider mix of aircraft, reduce conflicts between arrivals and departures and limit the time aircraft spend waiting for an available gate.
The program is also intended to make international connections easier. Today, O’Hare’s terminals and operating arrangements can require cumbersome transfers. The future Global Terminal and shared-use concourses are designed to integrate domestic and international operations more effectively.
Temporary flight limits do not erase the long-term case
The FAA imposed temporary operating limits at O’Hare during the 2026 summer season amid congestion and air-traffic-control constraints. That action may appear to conflict with a project meant to support future growth, but the two issues operate on different timelines.
Flight limits address the number and timing of near-term operations. Terminal construction addresses gates, passenger processing, baggage systems and aircraft movement for decades to come. A temporary cap does not eliminate the need to replace Terminal 2 or modernize O’Hare’s gate infrastructure.
Chicago has argued that the 2026 limits are temporary and that the national aviation system must provide the staffing and procedures needed to use O’Hare efficiently. The more important question is whether airspace, staffing and terminal investment will be coordinated as the new facilities open.
Who pays for the $8.8 billion program?
Chicago says its airline partners are paying for ORDNext. American and United are the dominant carriers at O’Hare and operate under agreements that support major capital investment at the airport.
Airport projects are generally financed through a mix of airport revenue bonds, airline rents and fees, passenger facility charges, grants and other airport-generated revenue. These mechanisms differ from a direct appropriation from the city’s general tax fund.
That does not mean travelers are insulated from the cost. Airlines incorporate airport charges into their network economics, and passenger facility charges appear directly on tickets. Higher airport costs can influence fares, schedules and the attractiveness of adding service, even when no separate “construction surcharge” is advertised.
The overrun question is real—but still hypothetical
Large infrastructure projects face predictable risks: inflation, material prices, labor availability, design revisions, utility conflicts and delays caused by keeping an active airport operating around construction.
Those risks justify scrutiny, but there is not yet evidence that the full ORDNext program has exceeded the current $8.8 billion figure. Cost growth should therefore be treated as a possibility to monitor, not a confirmed overrun.
The most useful accountability measures will be transparent updates on contract awards, contingency spending, schedule milestones and any changes to the airline funding agreement. If the scope or price changes, Chicago should explain whether the increase comes from inflation, added facilities or problems with execution.
What passengers should watch
- Concourse D’s 2028 target: delays here could affect the sequence of later terminal work.
- Gate availability during construction: temporary closures can create operational pressure before new capacity opens.
- Airport charges: increases in airline or passenger fees could influence fares and route decisions.
- Scope changes: added features may improve the final airport but also raise the program total.
O’Hare’s terminal complex needs modernization, and the new concourses promise tangible benefits for passengers and airlines. The case for building is strong. The test for Chicago is delivering those benefits while keeping the cost, financing structure and timetable visible to the public.
