| Number of passenger boardings in 2013 | |
|---|---|
| Hartsfield-Jackson Atlanta International | 45308407 | 
| Los Angeles International | 32425892 | 
| Chicago O'Hare International | 32317835 | 
| Dallas / Fort Worth International | 29038128 | 
| Denver International | 25496885 | 
| John F. Kennedy International | 25036358 | 
| San Francisco International | 21704626 | 
| Charlotte / Douglas International | 21346601 | 
| McCarran International | 19946179 | 
| Phoenix Sky Harbor International | 19525109 | 
Sources:
pewresearch.org

 
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Be prepared to rub shoulders with at least a few people when traveling through these airports. Hartsfield-Jackson Atlanta International holds the top spot as the busiest airport in the nation. Executing nearly 125,000 passenger boardings each day, the Hartsfield-Jackson Atlanta International airport is America's most populous transportation hub.