Smoking or vaping is not allowed on any flight to or from the United States. You can carry an e cig in your hand luggage, but you cannot use it in the cabin. Best Way to Take Weed Pen Through TSA and Customs Aircraft Lavatory Smoke Detector Facts Flight attendant explains what really happens if you smoke or vape on a plane 7NEWS What Really Happens If Someone Were To Vape On A Plane What Are Vape Detectors [& How to Avoid Triggering Them]