List of busiest airports by passenger traffic

The world's busiest airports by passenger traffic are measured by total passengers provided by the Airports Council International, defined as passengers enplaned plus passengers deplaned plus direct-transit passengers. The world's busiest airport is Hartsfield–Jackson Atlanta International Airport in metropolitan Atlanta, Georgia, which has been the world's busies airport every year since 1998 with the exception of 2020, when its passenber traffic dipped for a year due to travel restrictions resulting from the COVID-19 pandemic.^[1] Atlanta regained the top position in 2021.^[2][3] and has held it since. Alternatively, London has the world's busiest city airport system by passenger count.

As of 2022, the four busiest airports in the world are located in the United States. Eight countries have at least two airports in the top 50 (the United States has 19 of them, Turkey has three of them; and France, Germany, India, Mexico, Spain, and the United Kingdom have two of them.^[4] In terms of regions, North America has 22 airports in the top 50, followed by Europe at 11, Southeast Asia and West Asia with five each, East Asia, South Asia, and South America with two each, and Oceania has one.