Denver International Airport
Since opening on Feb. 28, 1995, Denver International Airport (DEN) has become the nation's fifth-busiest airport in the United States and 17th-busiest in the world. With more than 53 million passengers in 2014, DEN is one of the busiest hubs in the world’s largest aviation market, the United States, and is Colorado’s primary economic engine, generating more than $26 billion in annual economic impact for the state