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 You Bring a Vape on a Plane Under 21 BOOST! Everyone Is Vaping on the Plane Vaping and Smoke Alarms: What Actually Triggers the Sensors Vapesdirect Can You Take Vapes in Hand Luggage? Complete Guide for 2025 Aircraft Smoke Detectors, how they work and where to find them