America West Express was the brand name for America West Airlines commuter and regional flights operated by Mesa Air Group's Mesa Airlines under a code share agreement. Today Mesa Airlines operates for American Eagle. Mesa Airlines operated America West Express from hubs at Sky Harbor International Airport in Phoenix, Arizona and McCarran International Airport in Las Vegas, Nevada to regional destinations. Chautauqua Airlines also operated America West Express regional jet service via a code sharing agreement in support of the America West hub in Columbus, Ohio.