Beijing Capital International Airport in China became the third busiest airport in 2009 after surpassing O'Hare International Airport in the US.
Beijing Airport experienced a 17% increase in passenger traffic to 65.3 million, which was largely attributed to an increase in demand for travel throughout Asia and overseas, according to the Airports Council International's Preliminary World Airport Traffic 2009 report.
Atlanta's Hartsfield-Jackson Airport held onto first position by handling nearly 88 million passengers.
London Heathrow Airport again secured second position with 66 million passengers, despite a 1.5% decline.
O'Hare Airport dropped to fourth position after experiencing an 8.8% decrease to 64.4 million passengers due to American Airlines and United Airlines slashing capacity to cut costs.
Passenger traffic increased by 9.2% in Dubai, 4.9% in Bangkok and 0.2% in San Francisco.
Chicago's decline in passenger traffic was the steepest, followed by Las Vegas at 8.2% and Amsterdam at 8.1%.
Passenger traffic worldwide dropped 2.7% to 4.4 billion, as aircraft movements fell 5.5% to 63.9 million.