Why Do Your Ears Pop on an Airplane?

Almost every flyer knows the feeling: the plane descends, pressure builds in the ears, and then a small pop brings relief. That pop is the sound of a narrow tube in your head equalizing pressure, and understanding it explains why landings tend to bother ears more than takeoffs.

A trapped pocket of air

Behind each eardrum sits the middle ear, a small air-filled chamber. For the eardrum to vibrate freely and hearing to stay sharp, the air pressure inside that chamber must match the pressure outside. The middle ear connects to the back of the nose and throat through the Eustachian tube, which stays flat and closed at rest and opens briefly when you swallow, yawn, or chew, pulled open by small muscles in the soft palate.

As a plane climbs, the cabin pressure drops and the air trapped in the middle ear expands. Escaping through the Eustachian tube is relatively easy, so most people barely notice the climb. During descent the reverse happens: outside pressure rises, and air must flow into the middle ear through a tube that has to open against a growing pressure difference. That is the harder direction, which is why ears typically protest on the way down.

What the pop actually is

When the pressure difference across the eardrum builds, the drum is pushed inward and you feel fullness, muffled hearing, and sometimes pain. Swallowing or a gentle Valsalva maneuver (breathing out against a pinched nose) forces the Eustachian tube open, air rushes into the middle ear, the eardrum snaps back to its neutral position, and you hear and feel the pop.

When equalizing fails

If the tube stays blocked, the result is otic barotrauma, sometimes called aero-otitis: traumatic inflammation of the middle ear caused by the unresolved pressure difference. Symptoms range from fullness and earache to, in severe cases, bleeding into the eardrum or even perforation. Colds, sinus infections, and allergies make it far more likely, because a congested, swollen tube cannot open properly. This is why doctors advise against flying with an upper respiratory infection when it can be avoided, and why chewing gum, frequent swallowing, and yawning during descent genuinely help: each one works the muscles that open the tube.

Facts checked: October 23, 2026

Sources: Mirza, S. and Richardson, H. (2005). Otic barotrauma from air travel. Journal of Laryngology and Otology, 119(5):366-370. Hamrang-Yousefi, S., Ng, J., and Andaloro, C. Eustachian Tube Dysfunction. StatPearls. NCBI Bookshelf NBK555908.