The top 3 largest airports in the United States (by area) are as follows.

1. Denver International Airport (DEN)

• Location: Denver, Colorado
• Denver International Airport (DEN) is the largest airport in the United States and the second largest airport in the world (by area). It serves as a major aviation hub in the Rocky Mountain region, connecting domestic and international flights.
• Area: 135.7㎢ (largest airport in the United States, second largest in the world)
• Known for its unique design, the longest runway in the world, and its hub airport function, it is also a unique airport that has been the subject of some conspiracy theories and urban legends. It plays a crucial role for travelers to Denver and the Rocky Mountains and has plans for continued expansion.
  
• Features:
  • Houses one of the longest runways in the world (4,877m)
  • The airport design is unique, with a tent-shaped terminal being iconic
  • A major hub connecting the western and central United States

2. Dallas/Fort Worth International Airport (DFW)

• Location: Between Dallas & Fort Worth, Texas
• Area: 69.6㎢ (second largest airport in the United States)
• Features:
  • The largest hub for American Airlines
  • Five terminals (A~E) with a Skylink monorail operating between terminals
  • A global airport connecting North America, South America, Asia, and Europe

3. Orlando International Airport (MCO)

• Location: Orlando, Florida
• Area: 53.8㎢
• Features:
  • Heavily used by visitors to theme parks such as Disney World and Universal Studios
  • One of the busiest tourist-centric airports in the United States
  • Major airline hub: Southwest Airlines

The top 3 largest airports in the United States are Denver International Airport (DEN), Dallas/Fort Worth International Airport (DFW), and Orlando International Airport (MCO).

These airports represent the western, central, and eastern regions respectively, serving as important hubs for domestic and international travelers.