you can not vape on any plane, no matter what company you go with.
you are allowed to carry up to 4oz liquid with you but will not be able to vape it till you get to where you going.
I hate to say it, but this is not quite the way it is. But you are correct... partially.
There is only one airline that I know of that allows open vaping, and even then I have only seen it on one flight. And thats Ryan Air, a low cost carrier based in Ireland.
Many US carriers are prohibiting the use of ecigs onboard, and duely state in their inflight magazine, or safety demo. Who knows... remember when they started taking the "No smoking" sings out and replacing them with "No electronics" signs? Maybe we will begin to start seeing "No vaping" placards...lol
The fact is, most flight attendants (Myself included) could care less if you are vaping... as long as you are not causing a scene amongst other passengers. Meaning go stealth or vape carefully in the lav.. There are many posts regarding this.
Please be warned- Be careful when stealthing and have your technique mastered! One tickle in the throat causing a coughing up of a vapor cloud might land you with some explaining to do to a ...... flight attendant. (And we have all experienced the charming personalities of some of these crew) *Sarcasm*
Also, when vaping in the lav- Please hold your vape a little longer than usual, and then exhale downward to the floor. Those smoke detectors are very sensitive and will indeed go off when toyed with. In effect potentially creating a lot of paperwork for me at the end of a flight. And oh how I loathe paperwork!
Just dont make a spectacle, and enjoy your flight! You will be just fine.
Safe Travels,
RIAFlight25