Roberta Aguirre
The United States is home to some of the world's busiest and largest airports. These sprawling airfields play a significant role in the country's air traffic management, facilitating the travel of millions of passengers and vast cargo loads across continents. While Atlanta International Airport leads in passenger traffic, Denver International Airport takes the top spot in terms of size, spanning 135 square kilometres. In this paragraph, we will delve into the expansive infrastructure and operations of the largest airports in the US, exploring their impact on aviation and the overall travel experience.
| Characteristics | Values |
|---|---|
| Largest airport in the US by land area | Denver International Airport |
| Largest airport in the US by passenger volume | Hartsfield-Jackson Atlanta International Airport |
| Second-largest airport in the US by land area | Dallas/Fort Worth International Airport |
| Second-largest airport in the US by passenger volume | Dallas/Fort Worth International Airport |
| Third-largest airport in the US by land area | Not found |
| Third-largest airport in the US by passenger volume | Denver International Airport |
| Fourth-largest airport in the US by land area | Not found |
| Fourth-largest airport in the US by passenger volume | Los Angeles International Airport |
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What You'll Learn
Denver International Airport is the largest in the US
Denver International Airport, often referred to by locals as DIA, is the largest airport in the US by land area. Covering a surface area of 135 square kilometres (or 33,531 acres), it is the largest airport in the Western Hemisphere and the second largest on Earth, behind King Fahd International Airport in Dammam, Saudi Arabia.
Denver International Airport is located 25 miles (40 km) driving distance northeast of Downtown Denver, Colorado. It primarily serves metropolitan Denver and the greater Front Range Urban Corridor. The airport is also within sight of the Front Range of the Rocky Mountains.
The airport has one terminal, named the Jeppesen Terminal, and three midfield concourses with a total of 169 gates in operation as of early 2025. The airport is a major hub for United Airlines and the largest operating base for both Frontier Airlines and Southwest Airlines. It is the largest employer in Colorado, with over 40,000 employees.
Denver International Airport is one of the busiest airports in the world. In 2024, it served a record-breaking 82.3-82.4 million passengers, a 5.8% increase over the previous year. It is Colorado's primary economic engine, generating $47.2 billion in annual economic impact for the state. The airport has been among the top 20 busiest airports in the world every year since 2000.
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Dallas/Fort Worth International Airport is the second-largest
The airport is a major hub for American Airlines, which is headquartered nearby, and it serves as a significant economic generator for the North Texas region. DFW offers flights to numerous destinations worldwide, with 28 passenger airlines providing service to 254 destinations, including 191 domestic and 63 international locations. The airport also has its own unique ZIP code, 75261, and a United States Postal Service city designation as "DFW Airport, TX".
Dallas/Fort Worth International Airport has five terminals and 174 gates, with a unique half-circle design that minimises the distance between a passenger's car and their plane. The DFW Skylink automated people mover system further enhances intra-airport travel, allowing for quick transfers between gates within the secured area, with an average travel time of just seven minutes.
In addition to its size and operational efficiency, Dallas/Fort Worth International Airport has also been recognised for its outstanding customer service. According to Airports Council International (ACI) World, the airport earned the 2024 Airport Service Quality (ASQ) Airport Experience Award in the category for large airports serving over 40 million passengers annually. The airport has also been named the "Best Airport in North America Serving Over 40 Million Passengers" for three consecutive years.
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Orlando Airport is the third-largest
Orlando International Airport (MCO) is the third-largest airport in the US. It covers 47 square kilometres (18.1 sq mi) or 11,605 acres (4,696 ha) and is one of the largest commercial airports in terms of land area. It is Florida's busiest airport and the ninth busiest in the US, with 57,211,628 passengers in 2024. The airport is located 6 miles (9.7 km) southeast of downtown Orlando, Florida, and serves as a major international gateway to the region. With over 1,000 daily flights on more than 40 airlines, it offers services to over 170 domestic and international destinations.
Orlando International Airport's history dates back to the 1940s when it was constructed as a US Army Air Forces facility. It was originally known as Orlando Army Air Field #2 and later renamed Pinecastle Army Airfield in 1943. After a brief period of caretaker status following World War II, the airfield was reactivated during the Korean War as a Strategic Air Command (SAC) installation. In the early 1960s, with the introduction of jet airline flights to Orlando, the airport became a joint civil-military facility, leading to the construction of longer and sturdier runways.
An agreement between the City of Orlando and the US Air Force in 1962 resulted in the joint use of McCoy Air Force Base (AFB) as a civil air terminal, known as the Orlando Jetport at McCoy. This arrangement set a precedent for other joint civil-military airports. In the 1970s, as part of a post-Vietnam reduction, McCoy AFB was closed, and most of its facilities were turned over to the city of Orlando. The airport was renamed Orlando International Airport, and the USAF transferred responsibility for the air traffic control tower to the Federal Aviation Administration (FAA).
Today, Orlando International Airport boasts North America's fourth-tallest control tower, standing at 345 feet. The airport has four runways, two of which were designed for B-52 Stratofortress bombers due to their proximity to NASA's operations. With its vast land area and busy passenger traffic, Orlando International Airport plays a significant role in shaping air travel in the US, contributing to Florida's thriving aviation industry.
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Washington Dulles International Airport is the fourth-largest
In the United States, the largest airport by area is Denver International Airport, spanning 135 square kilometres. Dallas/Fort Worth International Airport in Texas is the second-largest, followed by Orlando International Airport in Florida. Washington Dulles International Airport is the fourth-largest.
Washington Dulles International Airport, located near the US capital, is named after John Foster Dulles, the 52nd Secretary of State who served during the Eisenhower presidency. The airport was inaugurated in 1962 and handles 24 million passengers annually. It is known for its uniquely structured terminal, which enhances capacity and the overall traveller experience.
The airport's spacious design and ample space allow for the development of additional terminals, lounges, parking areas, and entertainment facilities. This not only improves the travel experience but also enables more streamlined operations for airlines and ground staff, resulting in reduced delays and smoother connections.
Washington Dulles International Airport plays a critical role in supporting extensive international travel. Its impressive land coverage and facilities, including a large number of gates and runways, contribute to its ability to manage high passenger traffic, cargo loads, and robust airline operations. The airport serves as a significant hub for travel, providing connections to domestic and international destinations.
As one of the largest airports in the US, Washington Dulles International Airport exemplifies the country's focus on aviation as the preferred mode of transportation for inter-city travel. The airport's size and capabilities reflect the importance of efficient and comfortable travel experiences, solidifying its position as vital infrastructure in America's air transport network.
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Houston's George Bush Intercontinental Airport is the fifth-largest
When it comes to the biggest airports in the US, the Hartsfield-Jackson Atlanta International Airport is the busiest in terms of passenger traffic. However, the Denver International Airport is the largest by surface area, covering 135 square kilometres.
Houstons's George Bush Intercontinental Airport is the fifth-largest airport in the US. It is also commonly referred to as Houston International Airport or George Bush International Airport. Located about 23 miles (37 km) north of Downtown Houston, between Interstate 45 and Interstate 69/U.S. Highway 59, it offers direct access to the Hardy Toll Road expressway. The airport provides scheduled flights to numerous domestic and international destinations spanning five continents.
George Bush Intercontinental Airport is one of Houston's two major airports, forming the fourth-largest airport system in the country. It serves over 180 cities worldwide, ranking third in the US among airports with scheduled non-stop domestic and international services. With more than 700 daily departures, it is the largest airport in Houston, handling 43 million domestic passengers in 2015.
The airport was renamed after George H.W. Bush, the 41st President of the United States, in April 1997, by a unanimous vote of the Houston City Council. In 1990, Continental Airlines (now United Airlines) agreed to build its maintenance centre at the airport, with the city of Houston providing city-owned land nearby. In 2020, the airport embarked on a $1.3 billion capital improvement programme called the IAH Terminal Redevelopment Program (ITRP).
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Frequently asked questions
Hartsfield-Jackson Atlanta International Airport (ATL) is the largest airport in the US by passenger volume, serving approximately 45 million passengers in 2022, and over 104 million in 2023.
The airport has a total of five runways serving its domestic and international terminals and 192 gates. It is located roughly 10 miles from downtown Atlanta.
Dallas/Fort Worth International Airport (DFW) is the second-largest airport in the US by land area and passenger volume. It covers over 26.9 square miles and served 35 million passengers in 2022, and 51.5 million in 2024.
Denver International Airport (DEN) is the third-largest airport in the US and was the sixth-busiest airport in the world in 2024. Chicago O'Hare International Airport (ORD) is also one of the busiest airports in the world.
