Huntsville International Airport is a public airport and spaceport ten miles southwest of downtown Huntsville, in Madison County, Alabama, United States. The FAA has designated the Huntsville International Airport as a Re-entry site for the Dream Chaser, a spaceplane operated by Sierra Space to make reentries from Low Earth Orbit (LEO).

Madison County is located in the north central portion of the U.S. state of Alabama. As of the 2020 Census, the population was 388,153, making it the second-most populous county in Alabama. Its county seat is Huntsville. Since the mid-20th century it has become an area of defense and space research and industry.