SkyWest, through its subsidiary, SkyWest Airlines, Inc, provides scheduled passenger service to various destinations. Substantially all of Co.'s flights are operated as United Express, Delta Connection, American Eagle or Alaska Airlines flights under code-share arrangements (commercial agreements between airlines that, among other things, allow one airline to use another airline's flight designator codes on its flights) with United Airlines, Inc., Delta Air Lines, Inc., American Airlines, Inc. or Alaska Airlines, Inc., respectively. Co.'s segment, SkyWest Leasing, includes its financing of new aircraft with debt under its capacity purchase agreements, consisting of its E175 aircraft.