Lois Larson
The world's biggest airport is determined by its sheer landmass, and by that measure, King Fahd International Airport in Dammam, Saudi Arabia, is the biggest airport in the world by a large margin. Covering nearly 300 square miles, it is almost as big as all five boroughs of New York City combined. However, in terms of the number of passengers, Atlanta's Hartsfield-Jackson Airport is the busiest airport in the world, with 5.5 million seats and a capacity of 5.4 million seats. Interestingly, more than half of the biggest airports in the world are in the United States.
| Characteristics | Values |
|---|---|
| Biggest airport in the world by area | King Fahd International Airport |
| Size comparison | Approximately the same size as New York City |
| Second biggest airport in the world | Denver International Airport |
| Third biggest airport in the world | Dallas Fort Worth International Airport (DFW) |
| Fourth biggest airport in the world | Orlando International Airport |
| Sixth biggest airport in the world by area | Beijing's Daxing International Airport |
| Busiest airport in the world | Hartsfield–Jackson Atlanta International Airport, Atlanta, Georgia |
| World's best airport for 2025 | Singapore Changi |
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What You'll Learn
King Fahd International Airport, Saudi Arabia
King Fahd International Airport (IATA: DMM, ICAO: OEDF), also known as Dammam International Airport, is located in Dammam, Saudi Arabia. It is named after the former King of Saudi Arabia, Fahd ibn Abdulaziz, who reigned from 1982 until his death in 2005. The airport is situated about 20 kilometres (12 miles) northwest of downtown Dammam and serves the entire Eastern Province of the country.
The airport's design began in 1976, with construction commencing in 1983. It served as a US airbase during the Gulf War, with the basic infrastructure in place by the end of 1990. The airport was inaugurated and opened to commercial traffic on 28 November 1999, and it has been expanding ever since. More than 10 million passengers use King Fahd International Airport annually, with 37 airlines operating flights to 43 destinations worldwide. The airport features three passenger terminals: Terminal 1 caters to international flights, Terminal 2 to domestic flights, and a separate terminal is dedicated to the arrival of pilgrims performing Hajj and Umrah.
The airport boasts modern and well-maintained terminals, offering a wide range of facilities and services for travellers. These include duty-free shops, restaurants, cafeterias, car rental services, currency exchange, and lounges for premium passengers. Additionally, it has a separate area for shops specialising in gifts and passenger-related goods, including restaurants, cafeterias, and banks, located on the arrivals level. The Royal Terminal, covering 16,400 square metres, is exclusively reserved for the royal family of Saudi Arabia, government personnel, and official guests.
King Fahd International Airport also handles a significant cargo operation due to the region's industrial importance. It accommodates large and long-haul aircraft with its two parallel runways, each approximately 4,000 metres in length. Various transportation options are available to and from the airport, including taxis, airport shuttles, limousines, and ride-sharing services.
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Hartsfield-Jackson Atlanta International Airport, USA
Hartsfield–Jackson Atlanta International Airport (IATA: ATL, ICAO: KATL, FAA LID: ATL) is the largest airport in the United States. Located in Atlanta, Georgia, it is about 10 miles from Downtown Atlanta, providing easy access to the city and its surrounding areas. The airport is named after former Atlanta mayors William B. Hartsfield and Maynard Jackson.
Hartsfield–Jackson Atlanta International Airport has been the world's busiest airport by passenger traffic since 1998, except in 2020 when travel restrictions due to the COVID-19 pandemic caused a dip in passenger numbers. In 2023, the airport served over 104.6 million passengers, the highest globally. The airport is also the world's busiest by aircraft movements and has been named the busiest airport in the world in 2024, with a 2% increase in capacity.
The airport serves as the primary hub for Delta Air Lines, with over 1,000 flights daily to 225 domestic and international destinations. It is considered the first mega-hub in America and is also a base for Frontier Airlines, Southwest Airlines, and Spirit Airlines. The airport offers international services to North America, Latin America, Europe, Africa, the Middle East, and East Asia.
Hartsfield–Jackson Atlanta International Airport has a vast infrastructure, covering 2.5 million square feet (230,000 square meters) and featuring four parallel runways, with the longest being 11,889 feet (3,624 meters). To accommodate the increasing passenger demand, the airport has undergone multiple construction projects, including the Development Program: "Focus On the Future," aimed at preparing the airport for a projected demand of 121 million passengers in 2015. The airport also has a 20-year development plan to enhance the traveller experience continuously.
The airport boasts over 300 eateries and retail businesses, with many accessible outside the security checkpoint. It also has a designated area for ridesharing services and a specific location for hotel shuttles and the ATL SkyTrain for added convenience. With its size, passenger traffic, and continuous development, Hartsfield–Jackson Atlanta International Airport stands as one of the biggest and busiest airports in the world.
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Singapore Changi Airport
While there is no clear consensus on which airport is the biggest in the world, Singapore Changi Airport is one of the largest transportation hubs in Asia. It is Singapore's primary international airport, located in the district of Changi, approximately 24 kilometres (15 miles) east of Singapore's Downtown Core. The airport is spread across a 25-square-kilometre (9.7-square-mile) site and serves as a hub for over 100 airlines, offering flights to more than 400 cities in around 100 countries across Asia, Oceania, Africa, Europe, the Middle East, and North America.
Changi Airport handles about 7,400 flights per week, or one every 80 seconds, accommodating more than 120 million passengers annually. The airport has won numerous awards for its service quality, including 28 "Best Airport" awards in 2019 alone. It utilizes innovative technologies, such as analytical tools to improve services and marketing to enhance the personalization of the passenger experience.
The airport's development history dates back to the 1970s when Singapore's previous main international airport, located at Paya Lebar, faced congestion issues due to increasing air traffic. In 1975, the decision was made to build a new airport at Changi, and construction proceeded in two phases, with the original master plan incorporating dual terminals and runways, as well as provisions for future expansion. This expansion is still ongoing, with the construction of Terminal 5 and the third runway currently in progress.
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Denver International Airport, USA
Denver International Airport (DEN) is a major airline hub in the United States, serving metropolitan Denver, Colorado, and the greater Front Range Urban Corridor. At 33,531 acres (52.4 sq mi; 135.7 km2), it is the largest airport in the Western Hemisphere by land area and the second-largest on Earth, behind King Fahd International Airport.
The airport is located 23 to 25 miles (37 to 40 km) northeast of Downtown Denver, which is 15 to 19 miles (24 to 31 km) farther away than the former Stapleton International Airport, which DEN replaced. The airport is closer to the City of Aurora than central Denver, and many airport-related services, such as hotels, are located in Aurora. All freeway traffic accessing the airport from central Denver passes through Aurora for nearly two miles (3.2 km), making the airport a practical exclave.
Denver International Airport has consistently won top honours from publications like Business Traveller Magazine and the Wall Street Journal and has been ranked among the top airports in the world in customer surveys. The airport provides free wireless internet access, nursing rooms, and a volunteer therapy squad called the Canine Airport Therapy Squad (CATS). DEN also has an internationally recognised peaked roof, designed by Fentress Bradburn Architects, which resembles snow-capped mountains.
The airport currently supports 24 airlines flying to 200 destinations worldwide, with projects scheduled through 2045 to expand its capacity, including adding over 100 new gates and four new concourses. These projects are meant to support the over 120 million annual passengers expected to travel through Denver International Airport by 2045.
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Beijing Daxing International Airport, China
Beijing Daxing International Airport (PKX) is one of the two international airports serving Beijing, China's capital (the other being Beijing Capital International Airport). It is located on the border of Beijing and Langfang, Hebei, approximately 46 kilometres (29 miles) from Tiananmen Square and 28.5 miles from the capital. Nicknamed "the starfish", the airport covers an area of 2,679 hectares (6,620 acres) and has four civilian runways and one military runway.
The airport was completed on June 30, 2019, and began operations on September 26, 2019. The first phase of the airport project is designed to accommodate 72 million passengers, 2 million tons of cargo and mail, and 620,000 aircraft movements in the long term. The airport is designed to eventually have seven runways and serve about 620,000 flights annually. If the airport reaches its full capacity of 120 to 200 million passengers per year, it would become the world's busiest airport, surpassing Hartsfield–Jackson Atlanta International Airport, which is currently the largest airport in the US.
Beijing Daxing International Airport is efficiently connected to Beijing and offers a wide range of services and amenities to cater to the needs of its passengers. The airport features several parking facilities, including short-term and long-term parking options, with designated areas for passengers with disabilities and families. The terminal building is the second-largest in the world, with a unique design resembling a gigantic starfish. The main feature of the terminal is the abundance of natural light, creating a pleasant and relaxing travel experience. The airport is also equipped with the longest moving walkways in China.
Several major airlines, including Air China, Beijing Capital Airlines, China Eastern Airlines, China Southern Airlines, China United Airlines, and Xiamen Airlines, use Beijing Daxing International Airport as a hub. It is also a focus city for Hebei Airlines. Overall, the airport caters to both domestic and international destinations, with flights operated by members of the SkyTeam Alliance, some Oneworld members, and a few Star Alliance airlines.
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Frequently asked questions
King Fahd International Airport in Dammam, Saudi Arabia, is the world's biggest airport by land area, covering nearly 300 square miles.
The Beijing Daxing airport terminal in China is the largest in the world, covering an area of nearly 696,773 square meters (7.5 million square feet).
Atlanta's Hartsfield-Jackson International Airport is the busiest airport in the world by passenger traffic and capacity. It has held this title every year since 1998, except in 2020 due to the COVID-19 pandemic.
Dubai International Airport is the busiest airport outside of the US, ranked second globally as of March 2025.
