These are lists of the busiest airports in the United States, based on various ranking criteria.

Statistics

Busiest U.S. airports by total passenger boardings

The FAA uses passenger boarding for a half calendar year to determine Airport Improvement Program (AIP) entitlements. The term "hub" is used by the FAA to identify busy commercial service airports. Large hubs are the airports that each account for at least one percent of total U.S. passenger enplanements. Medium hubs are defined as airports that each account for between 0.25 percent and 1 percent of the total passenger enplanements.

Large hubs

Medium hubs

Busiest U.S. airports by international passenger traffic

Busiest U.S. airports by total cargo throughput

Listed according to data compiled by the Federal Aviation Administration for the United States and ranked according to total cargo throughput in pounds during 2017.