The list of triggers is long: turbulence, take-off, landings, terrorism, crashes, social anxieties, or being too far from home. Some people fear fire, illness spread through the air system, using the toilets, or violence on a plane.

Panic attacks on planes are usually triggered by a combination of claustrophobia (fear of enclosed spaces) and a perceived loss of control. When the cabin doors close, the psychological realization that you cannot leave the environment for several hours can trigger a "fight or flight" response in the nervous system. This is often exacerbated by "anticipatory anxiety," where a passenger worries about having a panic attack, which then causes the very symptoms they fear. Physical sensations like slight ear pressure, the vibration of the engines, or light turbulence can be misinterpreted by an anxious brain as a sign of imminent danger or a medical emergency (like a heart attack). Furthermore, the low humidity and slightly reduced oxygen levels in a pressurized cabin can cause some people to feel lightheaded or "short of breath," which are classic physical precursors to a panic attack. In 2026, many airlines address this by providing "wellness" channels on their entertainment systems with guided breathing exercises, helping passengers realize that while the environment is unfamiliar, they are safe and the physical sensations are a normal part of the flight experience.