Busiest airports in the world
Which is the busiest airport in the world?
May 2026
View the World's Busiest Airports, with data powered by OAG's Schedules Analyser.
We provide separate lists for global airports and international airports. The Top 10 Busiest Global Airports in the World are calculated using total airline capacity (domestic and international flights). The Top 10 Busiest International Airports focus on international airline capacity only. The data is updated each month and is available to download by clicking the button below.
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Busiest airports in the world at a glance
- Busiest Global (International + Domestic Capacity) Airport: Hartsfield–Jackson Atlanta International Airport (ATL)
- Busiest International Airport: London Heathrow Airport (LHR)
- Busiest European Airport: London Heathrow Airport (LHR)
Busiest airports in the world (all capacity)
Which is the busiest airport in the world?
- In May 2026, Hartsfield–Jackson Atlanta International Airport (ATL) remains the World’s Busiest Airport with 5.56 million seats, a 1% increase in capacity compared with May 2025.
- Chicago O’Hare International Airport (ORD) holds second place with 5.07 million seats, recording strong growth of 15% year-on-year, the highest among the top ten.
- Tokyo International Airport (HND) ranks third with 4.68 million seats, with capacity broadly flat compared with last year.
- Dallas/Fort Worth International Airport (DFW) moves into fourth place with 4.55 million seats, posting a 3% increase year-on-year.
- In China, Guangzhou Baiyun International Airport (CAN) ranks fifth with 4.43 million seats, up 5%, and Shanghai Pudong International Airport (PVG) is seventh with 4.41 million seats, recording growth of 4% year-on-year.
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Delhi (DEL) completes the top ten and is among the stronger performers this month, growing capacity by 9% year-on-year to 4.23 million seats.
Busiest international airport in the world
Which is the busiest international airport in the world?
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In May 2026, London Heathrow Airport (LHR) ranks as the World’s Busiest International airport, handling 4.17 million seats, although capacity has declined by 2% compared with May 2025.
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Seoul Incheon International Airport (ICN) remains in second place with 3.71 million seats, recording growth of 5% year-on-year.
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Amsterdam Airport (AMS) is a close third, just 904 seats behind ICN, with 3.71 million seats and Singapore Changi Airport (SIN) is in fourth place with 3.52 million seats, declining by 2% compared with last year.
- Paris Charles de Gaulle Airport (CDG) ranks fifth with 3.46 million seats, posting modest growth of 1%, while Frankfurt International Airport (FRA) follows in sixth place with 3.34 million seats, also increasing by 1%. Hong Kong International Airport (HKG) is seventh with 3.34 million seats, recording a stronger growth rate of 6% year-on-year.
- Further down the ranking, Madrid Adolfo Suárez–Barajas Airport (MAD) records the strongest growth among the top ten, increasing capacity by 8% to 2.61 million seats in ninth place.
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Taipei Taoyuan International Airport (TPE) completes the top ten with 2.56 million seats, up 3% year-on-year.
Busiest European airports
Which is Europe's top airport?
- London Heathrow Airport (LHR) is Europe’s busiest airport in May 2026, handling 4.43 million seats, although capacity declines by 2% compared with May 2025.
- Istanbul Airport (IST) follows in second place with 4.26 million seats, also recording a 2% decline year-on-year.
- Paris Charles de Gaulle Airport (CDG) ranks third with 3.81 million seats, posting growth of 2%, while Frankfurt Airport (FRA) moves into fourth place with 3.78 million seats, up 1% compared with last year.
- Amsterdam Airport (AMS) completes the top five with 3.71 million seats, also growing by 1%.
- Madrid Adolfo Suárez–Barajas Airport (MAD) continues to record one of the strongest growth rates among Europe’s busiest airports, increasing capacity by 7% to 3.45 million seats in sixth place.
- Barcelona Airport (BCN) follows in seventh place with 3.21 million seats, up 6% year-on-year.
- Rome Fiumicino Airport (FCO) ranks eighth with 2.93 million seats, posting steady growth of 4%.
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Munich Airport (MUC) records the sharpest decline among the top ten, with capacity falling by 10% year-on-year to 2.35 million seats, rounding out the top ten.
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Ranking methodology
How do we calculate the busiest airport?
The rankings are based on scheduled capacity in the current month and compared to the equivalent month in 2025. The Top 10 Busiest Airports are calculated using total capacity (domestic and international) and The Top 10 Busiest International Airports are calculated using international seats only.
For May 2026, airports in the Middle East have been excluded from these tables due to outbreak of war in late February which has disrupted airline schedules significantly.
FAQs about the world's busiest airports
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What makes these airports the busiest?
The top airports for capacity combine prime location, hub airlines, large-scale infrastructure, and strong economic or tourism pull.
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Why use capacity as a metric?
Capacity data and passenger numbers will tend to follow the same trend, but by using capacity data to determine the busiest airport we can look ahead to the upcoming month.
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Are these the busiest airports by number of flights?
We define our busiest airports by capacity, which provides a forward-looking view of passenger-carrying potential. Measuring by flights instead reflects aircraft movements (takeoffs and landings) and highlights overall air traffic. Airports with heavy short-haul domestic schedules often rank high by flights, but this does not necessarily translate into greater passenger capacity.
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