Memphis , Tennessee , home to FedEx , came in second with 4.1 million metric tons . The United States is still home to world 's busiest airport . Worldwide , passenger numbers rose to 6.3 million in 2013 . The top six airports in the world remained the same as last year . Dubai jumped two spots to finish in seventh place .
The United States is still home to world 's busiest airport . Worldwide , passenger numbers rose to 6.3 million in 2013 . The top six airports in the world remained the same as last year . Dubai jumped two spots to finish in seventh place .