Your ears pop on an airplane because the air pressure inside your middle ear and the air pressure in the cabin are changing at different speeds. A small tube in each ear is responsible for keeping those pressures matched, and during climb and descent, it can’t always keep up. That mismatch pushes on your eardrum, creating the stuffed, pressurized feeling, and the “pop” is the moment pressure finally equalizes.
What Happens Inside Your Ear
Each of your ears has a narrow channel called the eustachian tube, made of bone and cartilage, that runs from the middle ear to the back of your nose and throat. Its job is simple: let tiny amounts of air in or out so the pressure on both sides of your eardrum stays equal. It opens briefly every time you swallow or yawn, then closes again to protect the middle ear from bacteria and viruses.
On the ground, this system works so smoothly you never notice it. But in an airplane, pressure changes happen faster than your eustachian tubes can compensate for, and you feel the imbalance directly on your eardrum.
Why Pressure Changes During a Flight
Commercial aircraft cabins are pressurized, but not to sea-level pressure. Federal regulations allow the cabin to simulate an altitude of up to 8,000 feet. That means as the plane climbs, the air pressure around you drops noticeably, even inside the cabin. During descent, the opposite happens: cabin pressure rises as the plane returns to a lower altitude.
When the plane climbs, the air trapped in your middle ear is now at a higher pressure than the cabin air around it. That air pushes outward on your eardrum, making it bulge slightly. When the plane descends, the cabin pressure increases and pushes your eardrum inward instead. Both directions create that familiar clogged, uncomfortable sensation. The “pop” you hear is your eustachian tube opening just enough to let air pass through, snapping your eardrum back to its normal position.
Why Descent Feels Worse Than Climb
Most people notice more discomfort during landing than takeoff. During ascent, higher-pressure air in the middle ear can passively leak out through the eustachian tube relatively easily. During descent, the tube needs to actively open against rising external pressure to let air back in, which is mechanically harder. This is why your ears may feel fine on the way up but ache on the way down.
Why Kids Struggle More
Children, especially infants and toddlers, are more prone to ear pain on flights. Their eustachian tubes are narrower than an adult’s, which makes pressure equalization slower and less reliable. If a child also has a cold, ear infection, or swollen adenoids, those already-small tubes can be partially or fully blocked. This is a big reason babies often cry during descent: they’re feeling real pain and can’t do much to relieve it on their own. Giving a baby a bottle or pacifier during takeoff and landing encourages swallowing, which helps open those tubes.
Colds, Allergies, and Higher Risk
Flying with a cold, sinus infection, or active allergies significantly increases the chance of ear pain. Inflammation and mucus can swell the eustachian tubes shut, trapping air in the middle ear with no way to equalize. The CDC notes that pressure changes during ascent and descent can cause barotrauma and contribute to sinus infections or middle ear infections, particularly in people with preexisting eustachian tube problems. A vasoconstricting nasal spray used shortly before the flight can help shrink swollen tissue and keep the tubes functional.
How to Make Your Ears Pop
Several techniques can force your eustachian tubes open when swallowing alone isn’t enough:
- Swallowing or yawning. The simplest option. Chewing gum or sipping water during ascent and descent keeps you swallowing frequently.
- The Valsalva maneuver. Pinch your nostrils closed, keep your mouth shut, and gently blow as if trying to exhale through your nose. This pushes air up through the eustachian tubes. Don’t blow hard, as too much force can cause damage.
- The Toynbee maneuver. Pinch your nostrils closed and swallow at the same time. This works especially well during descent, when the eustachian tube needs help pulling air inward.
Both the Valsalva and Toynbee techniques have been used for centuries and work by mechanically forcing the eustachian tube open from slightly different angles. If one doesn’t work for you, try the other. Some people find alternating between the two clears stubborn pressure faster than repeating the same one.
When Ear Pressure Becomes a Problem
Mild fullness or muffled hearing after a flight is common and typically resolves within a few hours. If it lasts more than a few days, something more significant may be going on. Airplane ear, the medical term is ear barotrauma, can range from minor discomfort to real injury.
Symptoms that signal a more serious issue include severe pain, a noticeable drop in hearing, ringing in the ear, a spinning sensation, or bleeding from the ear. Bleeding in particular can indicate a ruptured eardrum. A small eardrum perforation usually heals on its own within weeks, but it needs to be evaluated. Any of these symptoms lasting beyond a couple of days warrant a medical visit.
Preventing Problems Before You Fly
Timing matters more than most people realize. Start swallowing or using equalization techniques before you feel pressure building, especially during descent. Once the eustachian tube is already locked shut by a large pressure difference, it becomes much harder to open. Staying awake during takeoff and landing helps too, since you don’t swallow as often while sleeping, which lets pressure silently build until it wakes you with pain.
If you’re congested, a decongestant nasal spray about 30 minutes before descent can reduce swelling enough to keep the tubes working. For people who fly frequently and consistently struggle with ear pressure, filtered earplugs designed for air travel slow the rate of pressure change reaching the eardrum, giving the eustachian tubes more time to adjust.