For years, the biggest headlines in US airport development have focused on sprawling projects at major international gateways such as New York John F. Kennedy International Airport (JFK), Los Angeles International Airport (LAX), and Chicago O’Hare International Airport (ORD), where multi-billion-dollar investments have become almost routine.

However, away from those aviation giants, a different transformation has been unfolding at airports that many travelers rarely consider, as regional facilities and mid-sized gateways have quietly launched construction programs that rival the scale and ambition traditionally associated with the nation’s largest hubs.

Backed by unprecedented federal support and growing passenger demand, these airports are no longer simply trying to keep pace with traffic growth but are positioning themselves as long-term economic engines for their regions. Much of this momentum has been driven by the Bipartisan Infrastructure Law, which allocated $25 billion in Airport Infrastructure Grants and the Airport Terminal Program between fiscal years 2022 and 2026.

This created what many industry observers consider a once-in-a-generation funding opportunity. With applications for the final approximately $1 billion round of Airport Terminal Program funding closing in January 2026, airports that secured financing during this historic window are now accelerating projects designed to reshape regional aviation for decades, even as much of the mainstream conversation continues to focus on the country’s largest legacy hubs.

5

Wilmington Airport (ILG)

$12 million

Credit: Wikimedia Commons

Wilmington Airport (ILG) is set to undergo a $12 million expansion that will modernize its terminal and improve the overall passenger experience. The project is aimed at accommodating growing demand for air travel while ensuring the airport can support future growth in both passenger traffic and airline operations. Planned upgrades include expanded waiting areas, additional seating, improved security screening facilities, and enhancements to baggage handling systems.

Airport officials say the investment will create a more efficient and comfortable environment for travelers while helping the airport keep pace with rising passenger expectations. Construction will be carried out in phases to limit disruption, allowing flights to continue operating throughout the project. Although some parts of the terminal may be temporarily relocated or restricted during construction, airport management has stated that minimizing inconvenience to passengers will remain a key priority.

The expansion reflects the increasing role that Wilmington Airport plays in serving the surrounding region, and like many smaller airports, it has benefited from travelers seeking convenient alternatives to larger hubs, where shorter queues, easier parking, and quicker terminal access can significantly improve the travel experience. Airport leaders believe the upgraded facilities will strengthen the airport’s ability to accommodate additional services in the future while improving operational efficiency.

The expanded terminal is also expected to provide greater flexibility during peak travel periods, helping reduce congestion and improving passenger flow from check-in through boarding. Modernized infrastructure will allow the airport to better support existing airline partners while creating opportunities to attract additional routes as demand continues to grow. The busiest route from the airport last year was to Orlando International Airport (MCO), as shown in the table above.

Beyond improving the passenger journey, the $12 million project is expected to deliver wider economic benefits for the local community. Construction activity will generate temporary jobs, while the upgraded airport could encourage further business investment, tourism, and regional development once the work is complete. Improved airport infrastructure is often viewed as a catalyst for economic growth, providing businesses with better connectivity and making the region more attractive.

Airport officials have described the expansion as part of a long-term strategy to modernize Wilmington Airport and ensure it remains well-positioned for future growth. Once completed, the project will provide travelers with a more spacious, efficient, and modern terminal while supporting the airport’s ambitions for continued development in the years ahead.

4

Northwest Arkansas National Airport (XNA)

$173 million

Credit: Wikimedia Commons

Few regions in the US have experienced the sustained economic and population growth seen in Northwest Arkansas over the past two decades, and Northwest Arkansas National Airport (XNA) has increasingly found itself at the center of that expansion. Once viewed primarily as a convenient regional airport, the facility has evolved into an essential transportation asset serving one of the country’s most dynamic business corridors.

Here, major corporate headquarters, manufacturing, healthcare, and tourism continue to generate rising demand for air travel. To keep pace with that growth, airport leaders have launched extensive modernization and expansion efforts that extend well beyond routine maintenance projects. Additional passenger facilities, expanded gate capacity, improved aircraft parking areas, and upgraded infrastructure are designed to accommodate increasing airline service.

This project will also create room for future route development. The airport’s long-term planning reflects a broader industry trend in which regional airports are preparing not only for today’s passenger numbers but also for decades of anticipated economic expansion, ensuring they remain competitive when airlines evaluate where to introduce new services. Envoy Air was the largest carrier at the airport last year, as detailed in the table above.

The availability of federal funding through the Bipartisan Infrastructure Law has helped make these ambitious projects more achievable. Between Airport Infrastructure Grants and the Airport Terminal Program, Congress allocated $25 billion over five fiscal years. This included $15 billion for Airport Infrastructure Grants and $5 billion distributed through the competitive Airport Terminal Program.

The fifth installment of Airport Infrastructure Grants, announced during 2025, continued directing billions of dollars toward airports across the country. This will enable facilities of widely varying sizes to accelerate projects that had often remained on planning documents for years due to funding limitations.

3

Lexington Blue Grass Airport (LEX)

$776.5 million

Credit: Shutterstock

Lexington Blue Grass Airport (LEX) may not immediately appear alongside America’s largest airports when discussing billion-dollar infrastructure ambitions, yet its long-term capital strategy illustrates how careful planning can gradually reshape a regional gateway into a far more capable operation. Rather than pursuing one enormous construction project, airport leadership has adopted a structured ten-phase modernization plan valued at approximately $776.5 million.

This allows improvements to be implemented while maintaining daily operations and adapting to future demand. At the center of the program is an expansion toward a 15-gate configuration that would significantly increase the airport’s capacity while modernizing passenger amenities, operational infrastructure, and support facilities.

This measured approach reflects the realities facing many regional airports, where balancing current operational needs with future growth often requires construction to occur over many years instead of through a single large-scale redevelopment effort. The busiest route from the airport last year was to Hartsfield-Jackson Atlanta International Airport (ATL), as outlined in the table above.

Unlike airports experiencing explosive traffic growth almost overnight, Lexington Blue Grass Airport serves a market where long-term planning and financial discipline remain equally important. By dividing the project into multiple coordinated phases, airport officials retain the flexibility to adjust schedules, funding priorities, and construction sequencing while continuing to deliver meaningful improvements for both airlines and passengers.

2

John Glenn Columbus International Airport (CMH)

$2 billion

Credit: Wikimedia Commons

Ohio’s John Glenn Columbus International Airport (CMH) represents another example of how regional airports are embracing transformational rather than incremental change. Instead of renovating an increasingly outdated terminal originally opened in 1958, airport leaders chose to pursue an entirely new passenger facility. This is valued at approximately $2 billion, recognizing that modern operational requirements extend well beyond cosmetic improvements.

The replacement terminal is expected to feature 36 gates. It will also have significantly improved passenger circulation, updated security screening areas, expanded concession space, and infrastructure designed to accommodate evolving airline operations over the coming decades. Southwest Airlines is by far the largest airline at the airport, with a 31.9% market share last year, as outlined in the table below.

By replacing rather than continuously modifying the existing building, planners have gained greater flexibility to create an airport that reflects current passenger expectations while improving operational efficiency for airlines. The project also illustrates how airports have increasingly become regional economic development assets rather than simply transportation facilities.

John Glenn Columbus International Airport continues to attract investment across technology, logistics, advanced manufacturing, and healthcare sectors, all of which rely on dependable air connectivity for employees, customers, and suppliers. Modern airport infrastructure therefore serves not only travelers but also the broader competitiveness of the metropolitan economy.

This philosophy aligns closely with the goals behind federal airport infrastructure programs established under the Bipartisan Infrastructure Law. Through the combination of Airport Infrastructure Grants and the competitive Airport Terminal Program, billions of dollars have been directed toward replacing aging facilities, improving accessibility, increasing operational resilience, and preparing airports for long-term growth rather than simply addressing immediate maintenance needs.

1

San Antonio International Airport (SAT)

$2.5 billion

Credit: Wikimedia Commons

Among the most ambitious airport expansion projects currently underway outside the traditional mega-hub category is San Antonio International Airport (SAT), where officials are overseeing a capital program valued at approximately $2.5 billion. Rather than focusing on incremental improvements, the Texas airport has committed to a comprehensive expansion strategy that reflects both the region’s rapidly growing population and its increasing importance as a business and tourism destination.

The centerpiece of the development is a new terminal complex expected to introduce 17 additional high-capacity gates while dramatically modernizing passenger facilities, creating an airport capable of handling substantially greater traffic volumes without relying on continuous short-term upgrades. Instead of merely replacing aging infrastructure, planners have emphasized flexibility, allowing future expansion to occur more efficiently as demand continues to increase throughout South Texas.

This level of investment would once have been associated almost exclusively with the country’s largest international gateways. However, San Antonio International Airport’s project demonstrates how secondary airports are increasingly thinking beyond today’s passenger numbers and planning for decades of sustained growth.

Airline networks have evolved considerably over the past several years, with carriers placing greater emphasis on serving fast-growing metropolitan regions directly rather than routing every passenger through a handful of legacy hubs. This has made airports such as San Antonio increasingly valuable within the national aviation system.