Atlanta no longer has the world's busiest airport. Here's the new #1.

Atlanta's Hartsfield-Jackson airport.
Atlanta's Hartsfield-Jackson airport.

Airports that had the most flights, both arrivals and departures, last year were:

1. Chicago O'Hare (881,933 total arrivals/departures)

2. Atlanta Hartsfield-Jackson (868,359 total arrivals/departures)

3. Dallas/Fort Worth (679,820 total arrivals/departures)

4. Los Angeles (636,706 total arrivals/departures)

5. Denver (575,161 total arrivals/departures)

Source: Federal Aviation Administration

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