The size of an airport’s land area is a crucial factor that often goes unnoticed by the average traveler. It plays a significant role in determining an airport’s capacity, environmental impact, and ability to adapt to advancing technology. While passenger volume is the standard measure of an airport’s success, physical area is what allows it to function as a self-contained city.

Here is a list of the top 10 largest airports in the United States, ranked by their total land area. These airports are home to multiple parallel runways, sprawling terminal complexes, and essential noise-buffer zones. They showcase how massive footprints are utilized to manage complex logistics, support thousands of daily takeoffs, and provide space for future expansions in a rapidly changing industry.

10. Detroit Metropolitan Airport (DTW)
Located in Romulus, Michigan, DTW serves as the primary international gateway for the state and a major hub for Delta Air Lines. Spanning 4,850 acres, it features 6 runways and 2 main terminals. Its efficient midfield design allows for smooth aircraft movement and a streamlined experience for millions of annual passengers. DTW also prioritizes sustainability by managing the 1,000-acre Crosswinds Marsh wetland preserve.

9. John F. Kennedy International Airport (JFK)
JFK, located in Queens, New York, is the busiest airport in the state and serves as a major base for JetBlue, American Airlines, and Delta Air Lines. It covers approximately 4,930 acres and features 4 runways, including one of the longest commercial runways in the country at 14,511 feet. The airport is currently undergoing a $19 billion redevelopment project to become a world-class facility with new state-of-the-art terminals.

8. San Francisco International Airport (SFO)
Serving as the primary gateway to Silicon Valley, SFO is a major hub for United Airlines and Alaska Airlines. It spans 5,207 acres and features a unique intersecting runway layout for high-efficiency operations. SFO is currently undergoing a $2. 6 billion modernization project, including a major repaving of Runway 1R set to begin in March 2026.

7. O’Hare International Airport (ORD)
Chicago’s O’Hare International Airport is a powerhouse of global connectivity, serving as a primary hub for both United Airlines and American Airlines. Spanning 7,627 acres, it operates 8 runways, the most of any US airport. The airport is currently undergoing a multi-billion-dollar expansion, including the construction of a new $1. 3 billion concourse and the eventual introduction of the O’Hare Global Terminal.

6. Salt Lake City International Airport (SLC)
Located 5 miles northwest of downtown Salt Lake City, SLC is the primary aviation hub for the Intermountain West and a fortress hub for Delta Air Lines.