Spirit Airlines, Inc. is a United States ultra low-cost carrier headquartered in Miramar, Florida, in the Miami metropolitan area. Spirit operates scheduled flights throughout the U.S. as well as the Caribbean Sea area, Mexico, and Latin America. In 2011, Spirit achieved $1 billion dollars in annual revenues and was thereby classified a major airline by the United States Department of Transportation. Spirit currently maintains two bases and three focus cities. Over half of the airline's flights are to destinations in the Bahamas, Caribbean, and Latin America.