SkyWest Airlines is a North American airline owned by SkyWest, Inc. and headquartered in St. George, Utah, U.S.. Financially speaking and according to the Airlines for America definitions, SkyWest is a North American major airline. SkyWest however, operates on a regional airline level and is a member of the Regional Airline Association. SkyWest Airlines flies to 203 cities, in 43 states; five Canadian provinces and five cities in Mexico and the Bahamas. The airline serves as a feeder airline, operating under contract with various major carriers. It flies as SkyWest Airlines in a partnership with Alaska Airlines, as United Express on behalf of United Airlines, as American Eagle on behalf of American Airlines, and as Delta Connection on behalf of Delta Air Lines.

As of September 2016, SkyWest Airlines employed 11,760 people throughout North America. The airline averages 1,716 departures a day, with 838 operating as United Express, 665 operating as Delta Connection, 135 operating as American Eagle and 77 operating as Alaska Airlines. In total, SkyWest carried 30.1 million passengers in 2015. The current Chairman of SkyWest, Inc. is Russel "Chip" Childs, with Michael Thompson as Chief Operating Officer of SkyWest Airlines.

Frustrated by the limited extent of existing air service, Ralph Atkin, a St. George, Utah lawyer, purchased Dixie Airlines to shuttle businessmen to Salt Lake City in 1972. After early struggles, SkyWest began a steady expansion across the western U.S.. It became the eleventh largest regional carrier in 1984 when it acquired Sun Aire Lines of Palm Springs, California, and had its initial public offering in 1986.

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