Skywest Airlines
Utah-based regional airline Skywest is contracted to take care of the flights of larger airlines, such as United Airlines, American Airlines, and Delta Air Lines, but also Alaska Airlines, The company operates a fleet of over 600 planes, and flees most routes on behalf of United and Delta.
However, it seems that in nowadays difficult labor environment, many regional airlines such as Skywest have to deal with more routes cut by the bigger airlines they have been contracted by, in favor of other companies that are more profitable.
Horizon Airlines
Horizon Airlines, which is headquartered in Washington, is the sister company of Alaska Airlines. The company is currently in the middle of transitioning its fleet to Embraer jets, which is allegedly about to improve its operations, but also its fuel efficiency.
In conjunction with its other airline, Alaska, Horizon currently flies to no less than 120 destinations in America, Canada, the Caribbean, Costa Rica, and Mexico. The regional airline suffered a $10 million loss only in the first quarter of 2022.