Traffic in United States is fairly evenly spread: Hartsfield - Jackson Atlanta International Airport (ATL) alone handles about 104.7 million passengers a year, roughly 8% of the 1,313 million across the 34 airports listed here. Several airports carry meaningful traffic rather than one gateway taking everything, which usually means strong regional demand rather than pure connecting traffic.
Between them these airports operate 131 runways serving 31 cities, and the country spans 10 time zones, so a domestic flight here can change your watch. The highest field is Denver International Airport at 5,434 ft, where thinner air lengthens the takeoff run. Every airport below links to a live map of aircraft observed within available ADS-B coverage around the field.
The next airport in the ranking is Denver International Airport (DEN) at about 82.4 million passengers. The gap to ATL is 22.3 million, while the three busiest airports account for roughly 20% of traffic represented by this list. That leaves a long tail of smaller gateways with a meaningful regional role.
The airports are spread across roughly 40 degrees of latitude and 87 degrees of longitude. That geographic spread makes weather, daylight and local operating conditions materially different across the same national network. Field elevations span 5,426 ft, so crews can move between very different takeoff-performance conditions. The average across this selected set is 3.9 runways per airport.
Read airport by airport, the selected United States network is not interchangeable: Hartsfield - Jackson Atlanta International Airport (ATL) has 5 runways and about 104.7 million annual passengers, Denver International Airport (DEN) has 6 runways and about 82.4 million annual passengers, Dallas Fort Worth International Airport (DFW) has 7 runways and about 81.8 million annual passengers, O'Hare International Airport (ORD) has 8 runways and about 80.0 million annual passengers, Los Angeles International Airport (LAX) has 4 runways and about 75.1 million annual passengers, John F. Kennedy International Airport (JFK) has 4 runways and about 62.5 million annual passengers, Harry Reid International Airport (LAS) has 4 runways and about 57.6 million annual passengers, Orlando International Airport (MCO) has 4 runways and about 57.2 million annual passengers, Miami International Airport (MIA) has 4 runways and about 55.9 million annual passengers, Charlotte Douglas International Airport (CLT) has 4 runways and about 53.4 million annual passengers, Seattle - Tacoma International Airport (SEA) has 3 runways and about 52.6 million annual passengers, San Francisco International Airport (SFO) has 4 runways and about 51.3 million annual passengers, Newark Liberty International Airport (EWR) has 3 runways and about 49.1 million annual passengers, Phoenix Sky Harbor International Airport (PHX) has 3 runways and about 49.0 million annual passengers, George Bush Intercontinental Airport (IAH) has 5 runways and about 46.2 million annual passengers, Boston Logan International Airport (BOS) has 6 runways and about 42.5 million annual passengers, Minneapolis - Saint Paul International Airport (MSP) has 4 runways and about 37.2 million annual passengers, Detroit Metropolitan Wayne County Airport (DTW) has 6 runways and about 36.8 million annual passengers, Fort Lauderdale - Hollywood International Airport (FLL) has 2 runways and about 35.0 million annual passengers, LaGuardia Airport (LGA) has 2 runways and about 30.8 million annual passengers, Salt Lake City International Airport (SLC) has 4 runways and about 26.9 million annual passengers, Baltimore/Washington International Thurgood Marshall Airport (BWI) has 4 runways and about 26.7 million annual passengers, Washington Dulles International Airport (IAD) has 4 runways and about 25.0 million annual passengers, Daniel K. Inouye International Airport (HNL) has 4 runways and about 21.0 million annual passengers, Chicago Midway International Airport (MDW) has 5 runways and about 21.0 million annual passengers, Dallas Love Field (DAL) has 3 runways and about 16.6 million annual passengers, William P. Hobby Airport (HOU) has 4 runways and about 14.0 million annual passengers, Indianapolis International Airport (IND) has 3 runways and about 10.0 million annual passengers, Ted Stevens Anchorage International Airport (ANC) has 3 runways and about 5.0 million annual passengers, Memphis International Airport (MEM) has 4 runways and about 4.8 million annual passengers, Juneau International Airport (JNU) has 2 runways and about 0.7 million annual passengers, Ketchikan International Airport (KTN) has 1 runway and about 0.24 million annual passengers, Petersburg James A. Johnson Airport (PSG) has 1 runway and about 0.05 million annual passengers and Wrangell Airport (WRG) has 1 runway and about 0.03 million annual passengers. Those differences matter when comparing a live map. A larger passenger total indicates schedule scale, while runway count describes physical layout; neither number by itself proves how delayed, connected or operationally efficient an airport will be on a particular day.