SkyWest Airlines is a North American contractor airline which is headquartered in Utah, United States. The airline operates flights on behalf of Alaska Airlines, American Eagle, Delta Connection and United Express and flies to more than 200 destinations for these carriers in the US, Canada and Mexico. While the airline uses and maintains its own planes, it flies using the schedule, branding and company standards of the airline that it's contracted by. This means that the service that SkyWest offers to passengers is identical to that of the airline that it's flying on behalf of.

The airline operates over 2,400 flights each day and is the largest airline in the US by number of passengers carried when combining all of its flights from each individual airline that it operates for. The airline primarily offers flights from each of Alaska's, American Airlines', Delta's and United's hub airports to smaller airports across North America.

Flybe is one of seven carriers that fly on under the American Eagle brand, with the other airlines being Piedmont Airlines, PSA Airlines, Compass Airways, MESA Airlines, Envoy Air and Republic Airline.

SkyWest Airlines has codeshare agreements with Delta, United, Alaska Airlines, American Airlines and US Airways. These code-sharing agreements allow SkyWest Airlines to operate as United Express, Delta Connection, American Eagle, and Alaska Airlines brands. Delta, United, Alaska Airlines, and American Airlines provide reservations, ticket sales, ground support services, and gate access while SkyWest Airlines handles the flight operations.