The St. Louis region is at a pivotal moment in its aviation future, weighing whether to build a new airport or expand existing facilities. St. Louis Lambert International Airport (STL), the area’s primary hub, is already moving forward with a master plan that envisions a single consolidated terminal, improved road access, and modernized infrastructure, with the first phase of construction expected to begin in 2028 and full completion by 2031. Meanwhile, MidAmerica St. Louis Airport (BLV) is being positioned as a secondary hub and potential international gateway, with new customs and general aviation facilities under construction.
Local leaders say growing passenger demand and increasing aerospace and business travel justify a robust investment in aviation infrastructure. Studies project that modernizing the region’s airports could boost economic impact from roughly $27.5 billion and 102,000 jobs to more than $32 billion and 133,000 jobs by 2032. At the same time, the idea of a completely new airport has emerged. Jefferson County, Missouri, recently issued a request for qualifications for consultants to identify potential sites, though early statements indicate the facility would focus on corporate and business aviation rather than large-scale commercial service. Officials estimate that planning, site selection, and construction could take roughly a decade.
Planners note that several challenges must be addressed before any major project moves forward. Forecasting passenger and airline demand will be critical to avoid underused facilities, while selecting a site with adequate runway length, access to highways and public transit, and minimal environmental or land-use conflicts is equally important. Large-scale airport projects require phased construction and long-term planning, as demonstrated by STL’s ongoing master plan. Funding is another key consideration, likely involving a combination of federal, state, local, and private investment, along with cross-jurisdictional governance in a metro region that spans Missouri and Illinois. Community support will also be essential, given the potential impacts on noise, traffic, and surrounding neighborhoods.
For now, a layered strategy appears most practical: STL remains the main commercial hub, BLV expands as a secondary facility, and a new, smaller airport could serve business aviation. For area businesses and civic leaders, the focus is on creating infrastructure that enhances regional connectivity, supports global trade, and encourages economic growth. While details remain uncertain, the next decade is likely to shape St. Louis’ aviation landscape for generations.
Header image: A rendering of a regional airport that could be similar to a new airport coming to the St. Louis area. Photo | VFLA Architects