Airlines in the U.S. ranked by domestic enplanements 2021| ��ƽ��

Leading airlines in the United States from 2011 to 2021, ranked by domestic passenger enplanements (in millions)

Characteristic	United Airlines	American Airlines**	Delta Air Lines	Southwest
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Release date

2022

More information

Region

United States

Survey time period

2011 to 2021

Supplementary notes

To retrieve the data for each carrier, select the carrier's name and press Submit.
The values have been rounded.
** American Airlines 2015 passenger number includes 24.78 million passengers reported as US Airways from January to June 2015, before the merger of the two carriers.
U.S Airways 2014 and 2015 passenger numbers were retrieved from the following To access the data, select December 2015 as month and US Airways as carrier.

Citation formats

million passengers boarded the listed U.S. airlines domestically in 2021, with the majority of enplaned passengers riding with Southwest Airlines, which had million domestic enplanements in that year.  

Southwest Airlines: additional information

   Southwest Airlines was the airline with the most enplanements each year since 2011, with Delta Air Lines consistently coming in second until 2020 when American Airlines took the second spot. In 2021, Southwest Airlines had a customer satisfaction index score above the average for American airline companies. 

The worst year in air traffic

   Passenger air travel has been growing yearly since 2009, a trend estimated to continue through 2020 until the coronavirus pandemic happened, erasing two decades of passenger traffic growth in only a few months. This can also be seen in the number of domestic passenger enplanements on U.S. airlines - Southwest Airlines transported ** percent less passengers in 2020 than it did in 2019.