Allegiant Travel Company is a leisure travel company that is focused on providing travel services and products to residents of under-served cities in the United States. The Company offers Scheduled service air transportation and Ancillary air-related products and services. Its Scheduled service air transportation provides scheduled air transportation on limited-frequency, nonstop flights predominantly between under-served cities and popular leisure destinations. Its Ancillary air-related products and services provide unbundled air-related services and products in conjunction with air transportation for an additional cost to customers. It also operates non-airline related entities that include the development of Sunseeker Resort and related golf course, and Teesnap golf course management solutions. It also operates a passenger airline that sells air transportation both on a stand-alone basis and bundled with the sale of ancillary air-related and third-party services and products.