Mia Terminal Expansion Approved With $600M Concourse Project

Miami International Airport (MIA) is set for its first terminal expansion in nearly two decades, following the Miami-Dade County Commission’s approval of a $600 million project to build a new Concourse K.

The new South Terminal concourse will include increased gate capacity, upgrades to baggage handling systems, and improved airfield infrastructure designed to meet the airport’s growing passenger and cargo demand. The expansion marks a step forward in the airport’s $9 billion "Future-Ready Modernization in Action" plan.

“MIA has not seen a terminal expansion since 2007, making this a truly transformative milestone for our airport,” says Miami-Dade County Mayor Daniella Levine Cava. “The launch of Concourse K will not only increase capacity and create thousands of new jobs, but also reinforce MIA's role as a premier global gateway.”

MIA handled almost 56 million passengers and more than 3 million tons of freight in 2024, but has ambitions of accommodating up to 77 million passengers annually by 2040.

The Concourse K project will deliver six new domestic gates, two baggage make-up carousels, a new aircraft apron with jet fuel hydrant infrastructure and a ground support equipment maintenance facility. There will also be upgrades to the existing baggage handling system to connect the Central and South Terminals.

Construction is expected to begin this summer, with completion targeted for spring 2029. Lemartec-NV2A has been selected as the project’s general contractor, and Perez & Perez Architects Planners will serve as lead architect.

As part of the broader $9 billion capital improvement program, MIA is also pursuing a number of other major upgrades. These include a four-level renovation and expansion of Central Terminal, the reconfiguration of 18 gates in Concourse D and the construction of a corridor for international arrivals between Concourses F and H.

MIA is currently served by 50 airlines, according to OAG Schedules Analyser data. American Airlines accounts for the largest share of capacity, operating 61.4% of all departing seats in May 2025. Delta Air Lines has a 6.9% share, followed by United Airlines at 3.4%. About 54% of the airport’s total seat capacity is on domestic U.S. routes.