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. Smoke alarms & e cigarettes in hotel rooms Fire alarm? Will a Vape Set Off a Fire Alarm? What to Know American Airline flight attendants found a man vaping in the bathroom. He posted a video of what came next. Can You Bring A Vape on A Plane? [2021] Do Vapes Set Off Smoke Alarms? Vape Shop