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What are the Biggest Airports in the USA ? 11 August 2025 by author

The United States is home to some of the largest and busiest airports in the world, reflecting its vast geography and significant air travel demand. These airports, like SWF airport, are not only gateways to cities but also critical hubs in global transportation and commerce. This article explores the biggest airports in the US by area, highlighting their size, passenger traffic, and unique features. Overview: Why Size Matters in Airports

Airport land area plays a crucial role in accommodating passenger volumes, cargo operations, and airline logistics. Larger airports can build more terminals, runways, lounges, and parking facilities, thus enhancing operational efficiency and passenger experience. Below, we present the top 10 biggest airports in the US by area along with key facts about each. Top 10 Biggest Airports in the US by Area (2025) Rank Airport Name Location Area (sq km) Annual Passengers (approx.) Notable Features 1 Denver International Airport (DEN) Denver, Colorado 137.26 58.8 million Largest airport by area; iconic white tent roof representing Rocky Mountains; 23 airlines, 163 gates 2 Dallas/Fort Worth International Airport (DFW) Dallas, Texas 69.63 70 million 5 terminals, 191 gates; 12th busiest worldwide; major American Airlines hub 3 Orlando International Airport (MCO) Orlando, Florida 53.83 40 million Gateway to Disney World; code MCO from McCoy Air Force Base; serves many tourists 4 Washington Dulles International Airport (IAD) Dulles, Virginia 52.6 24 million Named after John Foster Dulles; designed by Eero Saarinen; key for international flights 5 George Bush Intercontinental Airport (IAH) Houston, Texas 40.5 45 million Named after President George H. W. Bush; 5 terminals; strong Latin American connections 6 Salt Lake City International Airport (SLC) Salt Lake City, Utah 31.1 24 million Known for punctuality; serves outdoor enthusiasts; undergoing expansions 7 O’Hare International Airport (ORD) Chicago, Illinois 30.9 80 million One of the busiest airports globally; 91 gates; major hub for United and American Airlines 8 San Francisco International Airport (SFO) San Francisco, California 21.07 50 million (2023) Major West Coast hub; direct connections to Europe, Asia, Australia; modern facilities 9 John F. Kennedy International Airport (JFK) New York, New York 21 60 million Named after President Kennedy; located in Queens; expanding local gates 10 Detroit Metropolitan Airport (DTW) Detroit, Michigan 19.6 34 million 103 gates; important Midwest hub; offers various amenities and planned expansions Detailed Insights into the Biggest US Airports

  1. Denver International Airport (DEN)

    Size: 137.26 sq km (33,917 acres) Passenger Traffic: 58.8 million (2021) Key Points: Largest airport in the US by area, third largest worldwide. Known for its tent-shaped roof architecture mimicking the Rocky Mountains. Employs over 35,000 people, has 163 gates in three terminal areas, and serves 215 destinations.

  2. Dallas/Fort Worth International Airport (DFW)

    Size: 69.63 sq km (17,050 acres) Passenger Traffic: 70 million Key Points: Second largest by area, 12th busiest globally. Features 5 terminals and 191 gates, covering 260 destinations. It acts as a significant hub for American Airlines.

  3. Orlando International Airport (MCO)

    Size: 53.83 sq km (13,301 acres) Passenger Traffic: 40 million Key Points: Closest airport to Disney World and other attractions; derived airport code MCO from McCoy Air Force Base. Supports heavy tourist volumes.

  4. Washington Dulles International Airport (IAD)

    Size: 52.6 sq km (12,997 acres) Passenger Traffic: 24 million Key Points: Famous for its unique terminal design by architect Eero Saarinen. Serves the DC area with a large international focus.

  5. George Bush Intercontinental Airport (IAH)

    Size: 40.5 sq km (10,000 acres) Passenger Traffic: 45 million Key Points: Named after the 41st president, with comprehensive cargo facilities and strong Latin American routes. Served by United Airlines.

  6. Salt Lake City International Airport (SLC)

    Size: 31.1 sq km (7,700 acres) Passenger Traffic: 24 million Key Points: Noted for exceptional punctuality and low cancellation rates. Major hub for Delta Air Lines.

  7. O’Hare International Airport (ORD)

    Size: 30.9 sq km (7,627 acres) Passenger Traffic: 80 million Key Points: Chicago’s primary airport and one of the busiest worldwide, supporting extensive domestic and international flights.

  8. San Francisco International Airport (SFO)

    Size: 21.07 sq km (5,207 acres) Passenger Traffic: 50 million (2023) Key Points: Principal gateway for the West Coast; significant transpacific routes.

  9. John F. Kennedy International Airport (JFK)

    Size: 21 sq km (5,200 acres) Passenger Traffic: 60 million Key Points: Major New York airport, undergoing expansion to add more gates for local traffic.

  10. Detroit Metropolitan Airport (DTW)

    Size: 19.6 sq km (4,850 acres) Passenger Traffic: 34 million Key Points: Important hub for Delta Air Lines with over 100 destinations served; expansion plans ongoing.

Additional Noteworthy Facts

Employment: Airports like Denver International are among the largest employers in their states, providing jobs to tens of thousands.
Passenger Experience: Larger airports often feature more amenities—restaurants, shops, lounges—and entertainment options.
Expansion Capacity: Larger land areas provide flexibility for expansion, critical as air travel demand grows.
Cargo Operations: Big airports support significant logistics and freight handling capabilities, vital to global trade.