As a person who has traveled extensively, I can tell you it is perfectly fine to carry your PV through security. Some may ask what it is, most will not.
You can vape in most airports and nobody will care, while you'll need to stealth in others.
A flight attendant on an airplane will most likely not allow you to vape on board an aircraft. You can get away with stealthing if you come to an agreement with the person sitting next to you, or you can go to the lavatory and blow clouds. The smoke detector won't bat an eye so to speak.
I did, however, have one flight attendant spot my Provari, and ask me what it was. I told her it was like an e-cigarette, but more advanced. She said I could use it as long as I let her take a drag once in a while lol.
So there you have it. And when I say I traveled extensively I mean I was on a plane once a week, or two weeks for the last four years.