Busiest U.S. airports - number of passengers 2021

In 2021, Atlanta International Airport was the busiest airport in the United States, transporting 36.9 million passengers. In that same year, Atlanta was also the main hub of Delta Air Lines.

Delta Air Lines – additional information

U.S.-based Delta Air Lines is among the major airlines and legacy carrier in the United States, with a market share of 16.3 percent. As a founding member of the SkyTeam airline alliance, Delta is a member of SkyTeam and SkyTeam Cargo. In 2022, Delta Air Lines was ranked third within the long-haul airline segment, with a satisfaction index score of 813.

Major airports in the U.S.

In 2018, Chicago O’Hare International Airport was the first leading domestic airport hub in terms of connectivity index and number of airport operations implemented. In 2020, Atlanta International Airport was the fourth most punctual major hub in the U.S.

Busiest U.S. airports in 2021, based on the number of passengers enplaned (in millions)

U.S. airport	Passengers enplanements in millions
Atlanta, GA (ATL)	36.86
Dallas, TX (DFW)	30.04
Denver, CO (DEN)	28.89
Chicago, IL (ORD)	26.43
Los Angeles, CA (LAX)	23.77
Charlotte, NC (CLT)	20.92
Orlando, FL (MCO)	19.71
Las Vegas, NV (LAS)	19.25
Phoenix, AZ (PHX)	19.13
Miami FL (MIA)	17.53

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Release date

2022

More information

Region

United States

Survey time period

2021

Supplementary notes

All values are for non-stop segment flights reported by both U.S. and foreign air carriers.
The figures have been rounded.
To retrieve the data, select T-100 Segment (All Carriers), then select Analysis from the Origin Airport row. After that, select 2021 as the filter year, click recalculate and sort the data by Value Descending.

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