List of the world's busiest airports by passenger traffic

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 2015, only two countries have more than one airport in the top 30: the United States has twelve, while China has four, including Hong Kong.

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:

Airports Council International's final full year figures are as follows:

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