The United States is home to some of the largest airports in the world, and there are various ways to measure their size. One factor that is commonly used is the number of passengers passing through the airport in a given year. This article will explore the top five largest airports in the United States based on passenger volume in 2025.

1. John F.

John F. Kennedy International Airport, also known as JFK, is the busiest airport in the New York City metropolitan area. It served over 62. 6 million passengers in 2025, making it the sixth busiest airport in the world. This airport has five terminals and four runways, and it offers flights to over 230 destinations. JFK is a hub for American Airlines, Delta Air Lines, and JetBlue, and it is an important international gateway to the US.

2.

Los Angeles International Airport, or LAX, is the primary airport serving the Greater Los Angeles area. It welcomed over 73. 7 million passengers in 2025, making it the fifth busiest airport in the world. LAX has nine terminals and four runways, and it offers flights to over 200 destinations. It is a hub for all three major US airlines (American, Delta, and United) and also serves as a base for Alaska Airlines and Southwest Airlines.

3.

Denver International Airport, or DEN, is the main international gateway to Denver. It is the fourth busiest airport in the United States, serving over 82 million passengers in 2025. This airport covers a vast land area of 137. 8 km² and has six runways, including the longest civil runway in North America. DEN is a hub for United Airlines and serves as the largest operating base for both Southwest Airlines and Frontier Airlines.

4.

Chicago O’Hare International Airport, commonly known as O’Hare, is the primary international gateway to Chicago and the third largest airport in the United States. It served over 84. 8 million passengers in 2025, making it the sixth busiest airport in the world. O’Hare has eight runways and offers flights to 297 destinations. It is a hub for United Airlines and American Airlines, and it is also a major hub for low-cost carrier Spirit Airlines.

5.

Dallas/Fort Worth International Airport, also known as DFW, is one of the largest airports in the world. It served over 85. 6 million passengers in 2025, making it the second busiest airport in the United States and the fourth busiest in the world. DFW has seven runways and covers a land area of 69. 7 km². It is the largest hub for American Airlines, and it also serves as a base for low-cost carriers Frontier Airlines and Spirit Airlines.

6.

Hartsfield-Jackson Atlanta International Airport