The most busy airport in the US is Hartsfield–Jackson Atlanta International Airport (ATL). Located in Atlanta, Georgia, ATL consistently ranks as the busiest airport in the United States — and often the world — based on passenger traffic and aircraft movements.

Atlanta’s strategic location plays a major role in its traffic volume. It serves as a major connecting hub for domestic and international flights, particularly for Delta Air Lines. With hundreds of daily departures and connections to major cities across North America, Europe, Asia, and Latin America, ATL handles tens of millions of passengers each year.

Its efficient layout, strong airline network, and central geographic position make it the leading airport for passenger movement in the country.

For a detailed breakdown of top airports by passenger numbers, visit: Most Busiest Airport in US - Comparing Traffic, Flights, Airlines, and Scale