In the past some regionals have required you to purchase your own plates. It was an added expense like purchasing your uniforms that they would deduct from your checks. I can't imagine anyone giving you the entire 48 contiguous states. Republic does their best since I can barely fit mine in there but they still aren't close. However some places do carry a set of plates for all airports with runways long enough for that particular jet to land on. I think express has a bag in the plane for that but I'll let someone else chime in.