Lois Larson
With air travel rebounding to surpass pre-pandemic levels, several airports have emerged as leaders in terms of passenger traffic and reachability. While factors such as runway capacity and efficient management of air traffic control staff play a crucial role in an airport's functionality, safety, and reachability, some airports stand out for their exceptional connectivity and capacity. For instance, Istanbul Airport is regarded as the most connected airport in the world, while Dubai International Airport offers convenient connections to 85 countries on six continents. Additionally, Chicago's O'Hare Airport boasts the highest number of runways among commercial airports, enabling it to handle an impressive volume of passengers. These airports, along with others like Shanghai's Pudong Airport and Dallas/Fort Worth Airport, contribute significantly to global travel and connectivity.
| Characteristics | Values |
|---|---|
| Airport with the most reachability | Istanbul Airport |
| Number of runways | Not mentioned |
| Passenger traffic in 2024 | Not mentioned |
| Increase in passenger traffic compared to pre-pandemic levels | Not mentioned |
| Airlines that use the airport as a hub | Not mentioned |
| Number of destinations served | Connected to 85 countries on six continents |
| Ongoing issues | None mentioned |
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What You'll Learn
Busiest airports in the world
Airports with the most reachability are those that are considered the "busiest". The world's busiest airports by passenger traffic are measured by total passengers provided by the Airports Council International, defined as passengers enplaned plus passengers deplaned plus direct-transit passengers.
The world's busiest airport is Hartsfield–Jackson Atlanta International Airport in metropolitan Atlanta, Georgia, which has been the world's busiest airport every year since 1998 except in 2020 due to travel restrictions resulting from the COVID-19 pandemic. In 2024, the airport handled 108,067,766 passengers. Atlanta regained its top position in 2021 and has held it since.
Dubai International Airport (DXB) is another one of the world's busiest airports. In May 2025, it ranked as the world's busiest international airport with 5.2 million seats, a close second to Atlanta. Dubai International Airport is home to Emirates, one of the world's largest airlines. The airline offers convenient connections to 85 countries on six continents.
London Heathrow Airport (LHR) is Europe's busiest airport as of May 2025, a position it also held in May 2019 and May 2024. It is the world's second-busiest airport with 4.3 million seats. Heathrow has only two runways, which operate at an estimated 98% of their capacity, leading to heavy slot restrictions.
Chicago O'Hare International Airport (ORD) had the biggest increase in capacity in May 2025 compared to May 2024, with seats increasing by 7%. The airport handles a whopping 80 million passengers each year.
Other notable mentions include Amsterdam, which moved up a place to become the third busiest international airport with 3.7 million seats; Singapore Changi Airport (SIN), which moved down a place to fourth with 3.6 million seats; and Hong Kong (HKG), which had a 13% capacity increase, the most significant in the Top 10 compared to the previous year.
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Airports with the most runways
Airports with multiple runways can handle a higher volume of flights simultaneously, making them more efficient and effective. Chicago O'Hare International Airport (ORD) in Illinois boasts the most runways of any civilian airport in the world, with eight runways and a helipad. This transcontinental mega-hub features two sets of three runways running parallel to each other, allowing for spectacular parallel operations.
Dallas Fort Worth International Airport (DFW) in Texas is another intercontinental megacenter with seven runways. Before the coronavirus pandemic, DFW hosted the third-largest annual aircraft movement globally. DFW is one of the few airports capable of facilitating triple parallel landings, a feat also achieved by Chicago O'Hare.
Denver International Airport (DEN) in Colorado, Detroit Metropolitan Wayne County Airport (DTW) in Michigan, and Amsterdam Schiphol Airport (AMS) in the Netherlands all have six runways. DEN is a major hub for domestic and international flights and holds the distinction of having North America's longest commercial runway, measuring 16,000 feet. AMS is strategically located and is known for its extensive runway network, making it a crucial hub in European aviation.
Other notable mentions include Hartsfield-Jackson Atlanta International Airport, with five runways and the distinction of being the world's busiest charter airport, and Washington Dulles International Airport, with four runways.
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Fastest-growing airports
While the COVID-19 pandemic significantly impacted the aviation industry, several airports have since experienced remarkable growth. Here is a list of some of the world's fastest-growing airports:
Cancún International Airport (CUN), Mexico
Cancún International Airport tops the list with an impressive 37% increase in passenger traffic since the first quarter of 2019. The airport set a record of 30 million visitors in 2022, benefiting from its beautiful beaches, well-developed tourism infrastructure, and convenient flight connections. With over 500 daily inbound flights and direct routes from more than 38 US cities, Cancún has become an extremely popular travel destination for Americans.
Miami International Airport (MIA), USA
Miami International Airport has experienced significant growth, with a 23% increase in seat capacity since 2019. The airport's recovery since the pandemic is the strongest among US airports, driven mainly by domestic passengers, who saw a 26% increase in numbers. Miami is a popular tourist destination in its own right and also serves as a gateway to Latin America and the Caribbean. It is a major hub for several airlines, including American Airlines, Avianca, Frontier Airlines, and LATAM.
Cairo International Airport (CAI), Egypt
Cairo International Airport is one of the busiest airports in Africa and the Middle East, with a 23% increase in passenger traffic since the first quarter of 2019. Egypt has witnessed a steady recovery in tourism, and the authorities have unveiled a strategy to further increase visitor numbers, aiming for 30 million tourists by 2028. Cairo benefits from its proximity to popular tourist destinations such as the pyramids of Giza and Luxor.
Istanbul Airport (IST), Turkey
Istanbul Airport, the seventh busiest airport in the world, continues to grow, with a 22% increase in passenger traffic since the first quarter of 2019. Istanbul is a popular tourist destination and serves as a gateway to Europe, the Middle East, and Asia due to its unique geographical location. It is the main hub for Turkish Airlines, which operates flights to over 200 destinations worldwide.
Denver International Airport, USA
Denver International Airport is one of America's fastest-growing airports, recording 19.3% higher passenger numbers in 2024 compared to 2019. It has become the busiest hub for United Airlines, which has invested over $1 billion to expand its presence further. Denver is also a major hub for Southwest Airlines.
Shanghai Pudong Airport, China
Shanghai Pudong Airport experienced a remarkable 41% increase in traffic in 2024 compared to the previous year, contributing significantly to China's post-pandemic air travel recovery. Shanghai also has another airport, Hongqiao, which primarily handles domestic and regional flights.
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Airports with the most connections
Several airports around the world are known for their high number of connections. Here is a list of some of the airports with the most connections:
London Heathrow Airport (LHR)
London Heathrow Airport is Europe's busiest airline hub and one of six major airports serving the London region. Heathrow Airport was the world's most connected airport in 2023, with more than 57,000 international connections and over 209 international destinations served in August 2023. British Airways is the dominant airline at London Heathrow, operating 50% of all flights.
New York's JFK Airport (JFK)
JFK Airport in New York was the world's second most connected airport in 2023 and the US's most internationally connected airport. In August 2023, JFK had 43,500 international flight connections and served 180 international destinations. The airport has seen a significant rise in its ranking, moving up from 18th position in 2019.
Istanbul Airport (IST)
Istanbul Airport in Turkey is considered the most connected airport in the world by some sources. In August 2023, the airport served almost 300 international destinations, with more than 65,000 international connections. Turkish Airlines, the dominant carrier at Istanbul Airport, has expanded its fleet and added destinations in Central Asia and the US, contributing to the airport's high connectivity.
Other Notable Airports
Other airports with a high number of connections include Kuala Lumpur International Airport (KUL), which ranks 4th in the Global Top 20 Megahubs, followed closely by Tokyo's Haneda Airport (HND) in 5th place. Amsterdam Airport (AMS), Frankfurt Airport (FRA), Paris Charles de Gaulle Airport (CDG), and Atlanta Hartsfield-Jackson International Airport (ATL) are also among the top airports with the most connections. Additionally, Dubai International Airport, the home base of Emirates, offers convenient connections to 85 countries on six continents.
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Airports with the most passengers
Airports are fascinating places, and some of the busiest airports in the world are also among the most connected. Airports with the most passengers are often those that serve as connecting hubs for travellers from across the globe.
Hartsfield-Jackson Atlanta International Airport, Georgia
The Hartsfield-Jackson Atlanta International Airport has been the world's busiest airport since 1998, except for 2020 when travel restrictions due to the COVID-19 pandemic affected passenger traffic. Atlanta regained its top position in 2021 and has maintained it since. The airport serves as a connecting hub for domestic and international travellers due to its strategic location between North America, Europe, and Latin America. It offers 150 non-stop destinations across six continents.
Dubai International Airport, United Arab Emirates
Dubai International Airport is the second busiest airport in the world, with 92 million passengers in 2024. Dubai's airport serves as a strategic hub between Europe, the Middle East, and Asia, attracting 106 international airlines. Dubai's prominence as a centre for business and investment has contributed to its airport's high passenger traffic.
O'Hare International Airport, Chicago
O'Hare International Airport in Chicago is the eighth busiest airport in the world in terms of passenger traffic. It handles approximately 80 million passengers annually and is a major hub for American Airlines, United Airlines, and Southwest Airlines. O'Hare has eight runways, over 200 boarding gates, and connections to more than 200 domestic destinations.
Indira Gandhi International Airport, New Delhi, India
New Delhi's airport experienced a significant jump in rankings, rising from 28th in 2019 to 7th in 2024. The airport, named after former Prime Minister Indira Gandhi, opened a fourth runway in 2023 to accommodate the increasing demand for air travel in one of the world's most populous metropolitan areas.
Singapore Changi Airport, Singapore
While passenger number statistics for Changi Airport are not readily available, it is worth noting for its exceptional facilities and offerings. Changi Airport has been named the best airport in the world by Skytrax, boasting attractions such as a 10-story shopping mall, multiple indoor gardens, the world's tallest indoor waterfall, spas, hotels, art exhibitions, a cinema, and even a dinosaur theme park.
These airports, each remarkable in their own right, handle an impressive volume of passengers and contribute significantly to global air travel.
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Frequently asked questions
Istanbul Airport is the most connected airport in the world, according to an analysis from CNN.
Chicago's O'Hare Airport handles a whopping 80 million passengers each year and is a major hub for both American and United Airlines.
Dubai International Airport is the second busiest airport in the world, offering convenient connections to 85 countries on six continents.
