Your ears hurt on a plane because the air pressure inside your middle ear and the air pressure in the cabin are mismatched, and a tiny tube in your head can’t equalize them fast enough. This mismatch is most intense during descent, when cabin pressure rises quickly and creates what amounts to a vacuum behind your eardrum. That vacuum pulls the eardrum inward, stretching it in ways it isn’t designed for, and the result ranges from a dull fullness to sharp, sometimes severe pain.
What Happens Inside Your Ear During Descent
Your middle ear is a small, air-filled space sitting just behind your eardrum. It connects to the back of your throat through the Eustachian tube, a narrow channel that opens briefly when you swallow or yawn to let small amounts of air pass through. Under normal conditions, this keeps the pressure on both sides of your eardrum roughly equal.
When a plane descends, the cabin pressure increases. That rising pressure pushes against the outside of your eardrum. Meanwhile, the air trapped in your middle ear stays at the lower pressure from cruising altitude. The result is a pressure gap that forces your eardrum inward. Blood vessels in the ear canal and middle ear swell in response, and if the gap keeps growing, those vessels can leak fluid into the surrounding tissue. This fluid buildup is what doctors call serous effusion, and it’s the reason your ear can feel waterlogged or muffled for hours after landing.
If pressure continues to build without relief, the pain intensifies. In rare and extreme cases, the eardrum can actually rupture, which causes sudden pain followed by bleeding or fluid draining from the ear and temporary hearing loss. The pressure needed to rupture an eardrum is thought to be around 100 kilopascals, well beyond what a normal flight produces, but a badly congested ear that can’t equalize at all can get closer to that threshold than you’d expect.
Why Descent Hurts More Than Takeoff
During ascent, the air in your middle ear expands as cabin pressure drops. That expanding air pushes the Eustachian tube open passively, like a one-way valve releasing excess pressure. You might notice a quiet pop, but it rarely hurts. Descent is the opposite problem. Your middle ear needs to pull air in from your throat, and the Eustachian tube doesn’t open on its own in that direction. It requires an active effort: swallowing, yawning, or deliberately forcing air into the tube. If you miss that window or your tube is swollen, the pressure gap widens quickly and pain follows.
Why Congestion Makes It So Much Worse
The Eustachian tube is already narrow under the best circumstances. When you have a cold, sinus infection, allergies, or even mild congestion, the lining of the tube swells and partially or fully blocks it. That means air simply cannot reach your middle ear no matter how many times you swallow. Flying in this state significantly increases the risk of barotrauma, and what would normally be mild discomfort can become intense, lasting pain. If you’re actively congested, postponing the flight until you recover is the most reliable way to avoid turning a short trip into days of ear problems.
Why Kids Scream on Planes
Children’s Eustachian tubes are shorter, narrower, and more horizontal than adult tubes. That anatomy makes it harder for air and fluid to move through, which is the same reason kids get more ear infections in general. On a plane, it means young children have a much harder time equalizing pressure, and they can’t perform the deliberate techniques adults use. Babies who cry during descent are often responding to genuine ear pain they have no way to relieve on their own.
Techniques That Help Equalize Pressure
The two most common methods are the Valsalva maneuver and the Toynbee maneuver. For the Valsalva, you pinch your nostrils shut, close your mouth, and gently blow as if trying to push air out through your nose. You should feel a subtle pop as air is forced into your middle ear. For the Toynbee, you pinch your nostrils shut and swallow at the same time, which uses the natural muscle action of swallowing to pull the Eustachian tube open. In studies comparing the two, both techniques equalized pressure about 52% of the time in healthy adults under controlled conditions, so neither is clearly superior. The key is to start early. Begin swallowing or performing gentle Valsalva maneuvers as soon as you feel the plane start its descent, not after the pain has already set in. Once the Eustachian tube is locked shut by a large pressure difference, these techniques become much less effective.
Chewing gum or sipping water during descent works on the same principle: repeated swallowing opens the Eustachian tube in small bursts. For infants, nursing or giving a bottle during descent encourages the swallowing reflex.
Decongestants and Filtered Earplugs
An oral decongestant taken at least 30 minutes before departure can meaningfully reduce ear pain. In a controlled trial, passengers who took an oral decongestant before flying reported barotrauma symptoms only 34% of the time, compared to 71% of those who took a placebo. That’s a 52% reduction in risk. Nasal spray decongestants, by contrast, performed only slightly better than a placebo, reducing symptoms by about 10%. The oral form works better because it shrinks swelling throughout the entire Eustachian tube, not just the nasal passages.
Pressure-filtering earplugs (sold under brand names like EarPlanes) take a different approach. They create an airtight seal in your ear canal and contain a porous filter that slows the rate at which outside air pressure reaches your eardrum. This doesn’t block the pressure change entirely. It just stretches it over a longer period, giving your Eustachian tube more time to do its job. Think of it as converting a sudden pressure spike into a gradual slope. These plugs won’t help much if your Eustachian tube is completely blocked by congestion, but for people with mildly sluggish tubes, they can make the difference between pain and a gentle pop.
What to Expect After Landing
Most symptoms resolve quickly once you’re on the ground and your Eustachian tubes catch up. The muffled hearing and fullness typically clear within minutes to a few hours. If congestion or inflammation was involved, it can take a few days for your ears to feel completely normal, sometimes with the help of a decongestant or anti-inflammatory medication.
If your ears still feel full or blocked well after your flight, that lingering sensation can mean fluid is trapped in your middle ear. Contact a healthcare provider if the stuffed feeling doesn’t resolve, if you notice fluid or blood draining from your ear, if you experience dizziness or vertigo, or if your hearing doesn’t return to normal. A ruptured eardrum usually heals on its own within weeks, but it needs to be evaluated to rule out complications and confirm healing is on track.