Why Can't You Vape on a Plane FlightDeckFriend.com 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. Can Vaping Set Off a Smoke Alarm? Here's What You Need to Know Will Vaping Set Off Fire Alarms? 2026 Safety Guide E Cigarette Direct Vaping and Smoke Alarms: What Actually Triggers the Sensors Vapesdirect Can Airplane Smoke Detectors Detect Vape (in 2024) ? Vape Detector