The Denver International Airport or DIA located in Northeastern Denver, Colorado, USA is the largest international airport (by land size) in the United States and the third largest international airport in the world. read more
These are lists of the busiest airports in the United States, based on various ranking criteria. read more
Airport Code: DEN. Denver International Airport is the largest airport by area in the United States (it's twice the size of Manhattan!). Many regional carriers, particularly Frontier Airlines and Southwest Airlines, connect to DEN. read more