SkyWest operates as a regional airline in the U.S. through its subsidiary SkyWest Airlines. SkyWest is also the holding company of an aircraft leasing company. It offers high-quality regional service to airports located primarily in the Midwestern and Western United States as well as Mexico and Canada. Offering scheduled regional airline service under code-share agreements with its airline partners, forms the basis of the company's operating model. On a daily basis, SkyWest is responsible for operating more than 2,100 flights to multiple destinations in N. America. SkyWest provides regional operations to its major airline partners under long-term, fixed-fee, code-share agreements. The company has codeshare agreements with key airline players like Delta Air Lines, American Airlines, United and Alaska Airlines. The fixed-fee agreement with these companies obligate the respective major airline partner to refund the amount of fuel costs SkyWest incurs under those agreements.