If you are just flying in to the state with marijuana you should be fine. It is only a small fine for possession without a prescription, and it’s rare to be checked coming OFF of a plane. This is all assuming you had no issues at the airport you came from. Keep in mind when flying with marijuana, that TSA agents abide by federal laws and although they do not search for marijuana, if they find it they refer to local law enforcement. So there is still kind of a gray area with flying. Best to avoid it if possible.