From the quintet, SkyWest Airlines will operate most flights (6,727 weekly flights, or 49.9%), followed by Republic Airways (2,006 weekly flights, or 14.9%) and Mesa Airlines ...

Republic, started in 1974, has a fleet of more than 240 Embraer 170/175 aircraft and carried about 17.5 million passengers on more than 300,000 flights last year.