World's Top 10 Airports - #6 Chicago O’Hare International Airport (ORD)
O'Hare Airport International is in Chicago and from 1961 until 1998, O'Hare International was the busiest airport in the world. Since opening in 1955, Chicago O’Hare has consistently been one of the busiest passenger hubs in the world. In terms of take-offs and landings, it’s the busiest airport in the world; over 888,000 aircraft movements took place during the 12-month period ending April 21. It serves close to 40 different airlines and provides direct flights to more than 60 international destinations.