Denver International Airport's high elevation and large footprint

Denver International Airport (DEN) sits at an elevation of approximately 5,431 feet above sea level, making it the highest major international airport in the United States. DEN also occupies about 53 square miles (roughly 33,531 acres), making it the largest airport in the U.S. by land area. Its elevation and size have shaped aircraft performance considerations and land-use planning for the region.