World's Busiest Airports by Passenger TrafficThere are several airports around the world that handle millions of passengers every year. Here are some of the busiest airports by passenger traffic:Hartsfield-Jackson Atlanta International Airport, USAHartsfield-Jackson Atlanta International Airport is located in Georgia, USA. It is the busiest airport in the world by passenger traffic, serving more than 107 million passengers in 2018. Some of the reasons for its popularity include its strategic location, which makes it a popular hub for connecting flights, and its modern facilities, which make it comfortable for passengers.Chicago O'Hare International Airport, USAChicago O'Hare International Airport is located in Illinois, USA. It is the second busiest airport in the world by passenger traffic, serving more than 83 million passengers in 2018. It is also one of the largest airports in the world, covering an area of over 7,000 acres. Some of the reasons for its popularity include its location, which makes it a popular hub for connecting flights, and its modern facilities.King Abdul Aziz International Airport, Saudi ArabiaKing Abdul Aziz International Airport is located in Jeddah, Saudi Arabia. It is the third busiest airport in the world by passenger traffic, serving more than 41 million passengers in 2018. It is also one of the largest airports in the Middle East, covering an area of over 105 square kilometers. Some of the reasons for its popularity include its location, which makes it a popular hub for connecting flights, and its modern facilities.Lhasa Airport, TibetLhasa Airport is located in Tibet, China. It is one of the highest airports in the world, with an elevation of more than 3,500 meters above sea level. Despite its location, it is one of the busiest airports in the world by passenger traffic, serving more than 4 million passengers in 2018. Some of the reasons for its popularity include its location, which makes it a popular destination for tourists, and its modern facilities.In conclusion, these airports are some of the busiest in the world by passenger traffic. They are popular for different reasons, including their location, modern facilities, and popularity as hubs for connecting flights.

Due to the effects of the COVID-19 pandemic.[1] Hartsfield–Jackson Atlanta regained the top position in 2021.