The world's busiest airports by passenger traffic are measured by total passengers (data from Airports Council International), defined as passengers enplaned plus passengers deplaned plus direct-transit passengers. Hartsfield–Jackson Atlanta International Airport has been the world's busiest airport every year since 2000; with all airports combined London has the world's busiest city airport system by passenger count. As of 2016, seven countries have more than two airports in the top 50; the United States of America has 16, China has 8 (including Hong Kong), and United Kingdom, Japan, Germany, India and Spain has two airports each.
2016 preliminary data, according to each airport or country’s civil aviation authority, are as follows:
Airports Council International's full-year figures are as follows:
Airports Council International's full-year figures are as follows:
Airports Council International's full-year figures are as follows:
Airports Council International's preliminary full-year figures are as follows:
Airports Council International's final full-year figures are as follows:
Airports Council International's final full-year figures are as follows:
Airports Council International's final full year figures are as follows:
Airports Council International's final full year figures are as follows:
Airports Council International's final full year figures are as follows:
Airports Council International's final full year figures are as follows: