Denver has traditionally been home to one of the busier airports in the United States because its midcontinent location was ideal for an airline hub.
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TSA acknowledged DIA is set up in a specific way that makes it prone to long waits. All the airlines use two main security checkpoints and one smaller one. In other airports, individual airlines have their own checkpoints.
The extra length is needed in Denver's high elevation. Particularly for departures, larger, heavier planes need the additional space to get off the ground.
Denver International Airport, often referred to as DIA or DEN, is an airport in Denver, Colorado. At 53 square miles (140 km2) it is the largest airport in the United States by total area, and the second largest airport in the world after King Fahd International Airport.
The busiest airport in the United States is Atlanta's Hartsfield-Jackson International Airport (ATL). The Atlanta airport is also the No. 1 busiest airport in the world. In 2022, 45.4 million passengers boarded commercial aircraft in Atlanta, according to the FAA.
Fisher said the lower costs were likely a combination of cheaper oil prices and, in Denver, increased competition between traditional and up-start airlines.
Chicago O'Hare, also one of the most heavily traveled hubs, occupies less than a quarter of Denver International Airport's property, which, at 53 square miles, is the biggest airport in the United States.