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. Do Vapes Set off Smoke Alarms? A man named Peter Nguyen claims a flight attendant forced her way into an airplane bathroom after he took one puff of his vape. According to the FAA, vaping on a plane Can Airplane Smoke Detectors Detect Vape (in 2024) ? Vape Detector