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