Airports in United States
United States has 634 airports with scheduled passenger flights and an IATA code, 95 of them large. The busiest are Hartsfield Jackson Atlanta International Airport (ATL, 101.0 million passengers, US BTS T-100, Aug 2025 – Jul 2026), Chicago O'Hare International Airport (ORD, 84.4 million passengers, US BTS T-100, Aug 2025 – Jul 2026) and Dallas Fort Worth International Airport (DFW, 81.6 million passengers, US BTS T-100, Aug 2025 – Jul 2026). Anchorage, Atlanta, Chicago, Cincinnati, Columbus, Denver, Houston, Miami, New York, Orlando, Sault Ste. Marie, Seattle and Washington have more than one airport; a city code (CHI for Chicago, HOU for Houston, NYC for New York, WAS for Washington) stands for all of a city's airports on tickets and in flight searches.
Cities with more than one airport
Busiest routes
| Route | Distance | Passengers / year |
|---|---|---|
| JFK – LAX | 3,983 km | 3,020,062 |
| JFK – LHR | 5,555 km | 2,984,474 |
| LAX – SFO | 543 km | 2,842,388 |
| LGA – ORD | 1,180 km | 2,736,902 |
| ATL – MCO | 650 km | 2,697,788 |
| DEN – PHX | 968 km | 2,417,314 |
| LAX – ORD | 2,808 km | 2,332,419 |
| ATL – FLL | 934 km | 2,312,293 |
| HNL – LAX | 4,114 km | 2,261,240 |
| LAS – LAX | 380 km | 2,208,696 |
| ATL – LGA | 1,226 km | 2,179,981 |
| DEN – LAX | 1,387 km | 2,043,500 |
| DEN – LAS | 1,011 km | 2,041,165 |
| ATL – TPA | 653 km | 1,981,868 |
| ORD – SFO | 2,971 km | 1,976,484 |
| DEN – ORD | 1,430 km | 1,974,190 |
| EWR – MCO | 1,508 km | 1,946,092 |
| MCO – SJU | 1,913 km | 1,937,735 |
| HNL – OGG | 162 km | 1,935,417 |
| ATL – DFW | 1,177 km | 1,929,257 |