In 2017, almost 104 million people came through the world's busiest passenger airport. A year that saw significant increases across the globe.

For another year, Atlanta's Hartsfield-Jackson International Airport is the busiest in the word, according to cnn.com. The biggest reason for the airport's dominance is really one simple fact, he city is within a two-hour flight of 80% of the United States population of more than 300 million people. Beijing Capital International Airport came in a very close second with 94.4 million passengers.

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Chicago's O'Hare, just behind LAX and in front of London's Heathrow, is the 6th busiest airport in the world, serving 80 million passengers in 2017.