Gates K1 and L2A reopened to passengers at Chicago O’Hare International Airport on Wednesday, August 13, marking the first visible milestone in the $300 million ElevateT3 modernization project that has been reshaping American Airlines’ primary domestic terminal since construction began in April 2024. Four baggage claim carousels also came back online the same day. Mayor Brandon Johnson, U.S. Senator Dick Durbin, American Airlines executives, and Chicago Department of Aviation Commissioner Michael McMurray gathered for a reopening ceremony that framed the moment as both an infrastructure achievement and an economic statement about Chicago’s position as a global aviation hub.
The reopened gates feature expanded hold rooms, higher ceilings, large windows, and updated interior finishes that replace decades-old infrastructure dating to the original O’Hare construction era. Terminal 3 will remain fully operational throughout the rest of the project, which is scheduled for completion by summer 2027.
Key Takeaways
- Gates K1 and L2A in Terminal 3 reopened August 13 with expanded hold rooms, modernized interiors, and updated finishes. Baggage claim carousels 30 through 33 also returned to service.
- The $300 million ElevateT3 project is the first major investment in Terminal 3’s existing passenger facilities in several decades, funded in part by $90 million in FAA Airport Terminal Program grants under the Bipartisan Infrastructure Law
- Remaining work includes widening the passenger corridor between Concourses K and L to approximately three times its previous width, consolidating two TSA checkpoints into a single screening area, and upgrading American Airlines’ Admirals Club
- ElevateT3 is one component of the broader O’Hare 21 capital improvement program, an $8.5 billion initiative (now approximately $12 billion in current dollars) that includes a new 2.2 million square foot Global Terminal, two satellite concourses, and an underground tunnel system
- New Concourse D, the first satellite concourse under O’Hare 21, is scheduled to open in late 2028 with 19 gates capable of serving both domestic and international flights
- O’Hare processes more than 80 million passengers annually and employs tens of thousands of Chicago residents
What ElevateT3 Changes for American Airlines Passengers
Terminal 3 serves as American Airlines’ domestic hub at O’Hare, handling the carrier’s short-haul and medium-haul flights across the United States. The terminal’s infrastructure had not received a major capital investment in decades, and the contrast between its aging concourses and the recently expanded Terminal 5 (completed in 2023 with 10 new widebody gates and $1.3 billion in investment) had become increasingly visible to passengers moving between terminals.
The ElevateT3 scope extends well beyond the two gates that reopened this week. The project will reconfigure two existing Transportation Security Administration checkpoints into a single, more efficient screening area equipped with modern detection technology. The passenger corridor connecting Concourses K and L will be expanded to roughly three times its previous width, eliminating a bottleneck that has frustrated travelers during peak hours. Approximately 10,000 square feet of new space will be added for concessions and amenities, and American Airlines’ Admirals Club will receive a full upgrade.
Additional improvements include renovated restrooms, a new family restroom, expanded waiting areas, and upgrades to the terminal’s mechanical systems. The construction is being led by COT3, a joint venture of Clark Construction and W.E. O’Neil Construction, and the project has been designed to maintain full terminal operations throughout the construction period so that American’s flight schedule is not disrupted.
ElevateT3 Fits Inside a Much Larger Transformation
The $300 million Terminal 3 renovation is one piece of the O’Hare 21 capital improvement program, which was approved in 2018 with an original budget of $8.5 billion and a target completion date of 2026. Both figures have since grown. The program’s cost is now estimated at approximately $12 billion in current dollars, and the construction timeline extends to 2034.
The centerpiece of O’Hare 21 is a new 2.2 million square foot Global Terminal that will replace the current Terminal 2 and serve as the airport’s primary hub for connecting domestic and international passengers. Two satellite concourses, connected to the main terminal complex by an underground tunnel system, will add dozens of new gates. Concourse D, the first satellite structure, began vertical construction in April 2026 and is scheduled to open in late 2028 with 19 gates. Concourse E will follow to the west.
The Terminal 5 expansion, completed in 2023, added 10 new widebody gates, increased international gate capacity by 25%, and expanded the building by approximately 350,000 square feet. That project, led by Austin Power Partners, also included the renovation of more than 750,000 square feet of existing terminal space, making it the first completed phase of the O’Hare 21 program.
Federal Funding Played a Direct Role in the Project
The ElevateT3 project received $90 million in FAA Airport Terminal Program grants across 2023 and 2024 under the Bipartisan Infrastructure Law. The federal funding covered a significant portion of the project’s cost and was cited by Senator Durbin at the reopening ceremony as an example of infrastructure investment reaching one of the country’s most critical transportation hubs.
O’Hare’s economic footprint within Chicago and the broader region is substantial. The airport processes more than 80 million passengers annually and employs tens of thousands of residents across airline operations, concessions, ground transportation, maintenance, and construction. Mayor Johnson emphasized that dimension at the ceremony, calling O’Hare “the city’s largest economic engine” and describing American Airlines’ investment as a signal that Chicago remains a market worth building for.
Commissioner McMurray framed the gate reopenings as the beginning of a visible transformation that passengers will experience in stages over the next year. “Each milestone brings us closer to a Terminal 3 that’s brighter, easier to navigate, and better equipped to serve passengers,” McMurray said. The full ElevateT3 project is expected to wrap by summer 2027, after which attention will shift to the Global Terminal and satellite concourse construction that will define the next decade of work at O’Hare.
FAQs
What is the ElevateT3 project at O’Hare?
ElevateT3 is a $300 million modernization of Terminal 3 at Chicago O’Hare International Airport, which serves as American Airlines’ primary domestic hub. The project includes expanded gates, widened concourse corridors, consolidated TSA checkpoints, new concessions space, and upgraded amenities. Construction began in April 2024 and is scheduled for completion by summer 2027.
Which gates reopened at O’Hare this week?
Gates K1 and L2A in Terminal 3 reopened on August 13, 2026, with expanded hold rooms and modernized interiors. Baggage claim carousels 30 through 33 also returned to service the same day.
What is the O’Hare 21 program?
O’Hare 21 is a long-term capital improvement program approved in 2018 to modernize Chicago O’Hare International Airport. Originally budgeted at $8.5 billion, the program now costs approximately $12 billion and includes a new 2.2 million square foot Global Terminal, two satellite concourses, an underground tunnel system, and renovations to existing terminals. The program is expected to reach completion by 2034.
