I just got back from vacationing in CA and NV. I am a patient in WA.
I have read that if you are traveling within your own state you should be okay...but, when you are in the air, you are covered by Federal law..thus, not a good idea. For sure, treat it like you did before becoming a patient.
I mailed a package to myself before arriving, but it was going to be a few days before I got to where I mailed my package. I ground up some and rolled a couple in my cig machine, in filtered tubes, and added them to my pack of cigarettes for the flight. I don't recommend you do it, but it worked for me.