SkyWest is the holding company for two scheduled passenger airline operations and an aircraft leasing company and is headquartered in St. George, Utah. SkyWest's scheduled passenger airline operations consist of SkyWest Airlines also based in St. George, Utah and ExpressJet Airlines, Inc. ("ExpressJet Airlines") based in Atlanta, Georgia. SkyWest Airlines operates as United Express, Delta Connection, American Eagle and US Airways Express carriers under contractual agreements with United, Delta, American Airlines, Inc. ("American") and US Airways, Inc. ("US Airways"). SkyWest Airlines also operates flights for Alaska Airlines under a contractual agreement. ExpressJet Airlines operates as United Express, Delta Connection, and American Eagle carriers under contractual agreements with United, Delta and American. System-wide, SkyWest serves markets in the United States, Canada, Mexico and the Caribbean with approximately 4,100 daily departures and a fleet of approximately 760 regional aircraft.