* All values are for domestic non-stop segment flights reported by both U.S. and foreign air carriers.
The figures have been rounded.
To retrieve the data, select Air Carrier Statistics (Form 41 Traffic) - All Carriers, click on T-100 Domestic Segment (All Carriers), then select Analysis from the Origin Airport row. After that, select 2020 as the filter year, click recalculate and sort the data by Value Descending.
In 2021, Hartsfield-Jackson Atlanta International Airport handled **** million domestic passengers and was the busiest U.S. airport for domestic travel. ATL was followed by Denver International with a domestic passenger traffic of almost ** million.
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Bureau of Transportation Statistics. (December 9, 2022). Leading domestic airports in U.S. in 2021, based on passenger traffic (in millions)* [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 31, 2026, from /statistics/639813/us-airports-domestic-passenger-traffic/
Bureau of Transportation Statistics. "Leading domestic airports in U.S. in 2021, based on passenger traffic (in millions)*." Chart. December 9, 2022. ÌÇÐÄÆƽâ°æ. Accessed July 31, 2026. /statistics/639813/us-airports-domestic-passenger-traffic/
Bureau of Transportation Statistics. (2022). Leading domestic airports in U.S. in 2021, based on passenger traffic (in millions)*. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 31, 2026. /statistics/639813/us-airports-domestic-passenger-traffic/
Bureau of Transportation Statistics. "Leading Domestic Airports in U.S. in 2021, Based on Passenger Traffic (in Millions)*." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 9 Dec 2022, /statistics/639813/us-airports-domestic-passenger-traffic/
Bureau of Transportation Statistics, Leading domestic airports in U.S. in 2021, based on passenger traffic (in millions)* ÌÇÐÄÆƽâ°æ, /statistics/639813/us-airports-domestic-passenger-traffic/ (last visited July 31, 2026)
Leading domestic airports in U.S. in 2021, based on passenger traffic (in millions)* [Graph], Bureau of Transportation Statistics, December 9, 2022. [Online]. Available: /statistics/639813/us-airports-domestic-passenger-traffic/
