Top ten world's busiest airports by passenger traffic are measured by number of total passengers (data provided by Airports Council International and BAA). One passenger is described as someone who arrives in, departs from, or transfers through the airport on a given day. Hartsfield-Jackson International Airport in Atlanta has been the world's busiest airport every year since 2000 whilst London has the world's busiest city airspace with 2 of its airports regularly found in the top ten.
Hong Kong International Airport - Chek Lap Kok, Hong Kong
Total Passenger: 11,098,500
Denver International Airport - Colorado, United States
Paris-Charles de Gaulle Airport - France
Los Angeles International Airport - California, United States
Dallas-Fort Worth International Airport - Texas, United States
Beijing Capital International Airport - China
Total Passenger: 15,153,600
Tokyo International Airport - Japan
London Heathrow Airport - United Kingdom
O'Hare International Airport - Chicago, Illinois, United States
Hartsfield-Jackson Atlanta International Airport - Georgia, United States
Total Passenger: 20,181,931