View and interrogate the World's Busiest Airports, with data powered by OAG's Schedules Analyser.

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 are calculated using international airline capacity only.  The data is updated each month and is available to download by clicking the button below.

which is the busiest international airport in the world?

• Dubai International Airport (DXB) remains the World’s Busiest International Airport in September 2025 with 5.1 million seats, which is a 4% increase in capacity compared to last year.
• London Heathrow (LHR) keeps its position in second place with 4.16 million seats and has similar capacity to last year.
• Amsterdam (AMS) ranks third, with 3.66 million seats, and capacity is 3% higher than last year.
• Istanbul Airport (IST) is in fourth place with 3.53 million seats, a 5% increase in capacity compared to last year, which moves the airport up from seventh place last year.
• Hong Kong International Airport (HKG) continues to experience the largest capacity growth among the Top 10 compared to last year, increasing by 8% and adding 221,389 seats, a clear indication of the region’s ongoing travel recovery.
• Seoul Incheon International Airport (ICN) was the only airport to see a reduction in capacity, down 2% compared to last year.

Which is Europe's Busiest Airport?

• Istanbul Airport (IST) remains Europe's busiest airport in September 2025 with 4.48 million seats, a 5% increase in capacity compared to the same month last year. (In September 2024, Istanbul Airport (IST) was the second largest airport in Europe - not only has it moved up to first place, but it is still growing - showing it is one of the fastest growing hubs).
• London Heathrow Airport (LHR) is in second place with 4.4 million seats, and Paris Charles de Gaulle Airport (CDG) is in third place with 3.72 million seats; both airports have similar capacity to last year.
• Frankfurt International Airport (FRA) and Amsterdam (AMS) follow closely in fourth and fifth place, both adding 3% more seats compared to last year.
• Istanbul Sabiha Gokcen Airport (SAW) continues to demonstrate the strongest growth, increasing capacity by 23% year on year with 477,456 additional seats, and is now in tenth place.
• Munich International Airport (MUC) has also seen strong growth this month compared to last year, adding 6% more capacity, and is at 2.64 million seats in ninth place. 
  

SEATS

The rankings are based on scheduled capacity in the current month and compared to the equivalent month in 2024. 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.