SkyWest Airlines is a regional airline based in the United States, known for operating flights on behalf of major carriers like United Airlines, Delta Air Lines, and American Airlines. Founded in 1972, it has grown to become one of the largest regional airlines in the country, providing essential connections to smaller airports. The airline operates a fleet of over 400 aircraft, primarily Embraer and Bombardier regional jets. With its headquarters in St. George, Utah, SkyWest Airlines serves numerous destinations across North America, helping to enhance air travel accessibility for passengers in various regions.