Flying with a cold is doable, but it takes preparation. The main risk isn’t spreading your illness (though that’s worth considering). It’s the intense ear pain that happens when swollen nasal passages block the tiny tubes responsible for equalizing pressure in your ears. With the right timing of decongestants and a few in-flight techniques, most people can fly through a cold without serious problems.
Why a Cold Makes Flying Painful
A narrow passage called the eustachian tube connects your middle ear to the back of your nose and throat. Its job is to keep air pressure equal on both sides of your eardrum. When a plane climbs or descends, cabin pressure changes rapidly, and the eustachian tube has to open and close to let air through. Normally, swallowing or yawning is enough to help it along.
When you have a cold, the tissues lining your nose and throat swell, and that swelling can squeeze the eustachian tube shut. If air can’t move through, pressure builds on one side of the eardrum while the other side stays put. The eardrum can’t vibrate normally, which causes that familiar plugged feeling, muffled hearing, and sometimes sharp pain. The Aerospace Medical Association considers nasal congestion from an upper respiratory infection a “relative contraindication to flight,” meaning it’s not an absolute no, but it carries real risk and requires precautions.
The Decongestant Strategy
The single most effective thing you can do is time your decongestants properly. Johns Hopkins Medicine recommends taking an oral decongestant before you board, then taking another dose at least one hour before landing if the flight is long enough. The Aerospace Medical Association goes further, advising both a systemic (oral) decongestant and a topical long-acting nasal spray before the flight and again before descent. The goal is to have your nasal passages as open as possible during the two moments when pressure changes are most dramatic: takeoff and landing.
Nasal sprays work faster and more directly than pills, shrinking swollen tissue right where it matters. Use the spray about 30 minutes before takeoff, and again roughly an hour before the plane begins its descent. If you’re unsure when descent starts, a good rule of thumb is to spray when the captain announces the initial approach or when you’re about 45 minutes from landing on a domestic flight. Don’t use decongestant nasal sprays for more than three consecutive days, as they can cause rebound congestion that makes things worse.
Techniques to Clear Your Ears In-Flight
Decongestants open the path, but you still need to actively move air through your eustachian tubes during pressure changes. Three methods work well together:
- Swallowing and chewing. Chewing gum or sipping water during ascent and descent forces you to swallow repeatedly, which pulls the eustachian tubes open naturally. This is the easiest and safest method.
- The Valsalva maneuver. Pinch your nostrils closed, keep your mouth shut, and gently blow through your nose. This pushes air up into the eustachian tubes. The key word is “gently.” Don’t blow hard, and don’t hold pressure for more than five seconds. Forcing it can actually rupture delicate membranes in the inner ear. Try this every 30 seconds or so during descent if your ears feel blocked.
- The Toynbee maneuver. Pinch your nostrils closed and swallow at the same time. Swallowing pulls the eustachian tubes open while the pinched nose creates a small pressure change that helps push air through. This is gentler than the Valsalva and works well as a first attempt.
If one method isn’t working, try another. Alternate between them during descent rather than forcing any single technique repeatedly.
Stay Hydrated in Bone-Dry Air
Airplane cabins are extraordinarily dry. Relative humidity typically sits between 5% and 15%, compared to the 30% to 50% most people are comfortable with. In one laboratory study simulating cabin conditions, between 57% and 74% of participants reported moderate to severe symptoms of dry nose, eyes, throat, and skin.
When you already have a cold, this dry air makes thick mucus even thicker and irritates already-inflamed nasal passages. Drink water steadily throughout the flight. Saline nasal spray (the non-medicated kind) can help keep your nasal lining moist without the rebound risk of decongestant sprays. Avoid alcohol, which dehydrates you further and can worsen swelling.
Flying With Sick Kids
Children’s eustachian tubes are narrower and more horizontal than adults’, making them more vulnerable to pressure problems. Babies and toddlers can’t perform the Valsalva maneuver, so you need other ways to get them swallowing during takeoff and landing.
For infants, breastfeeding, bottle-feeding, or offering a pacifier during ascent and descent encourages the swallowing that opens the eustachian tubes. For older children, give them something to drink or chew on. Keep your child awake during takeoff and landing, because children swallow more often when they’re awake. If your child is in significant discomfort, giving a dose of a children’s pain reliever about 30 minutes before takeoff or landing can help. Nasal drops or spray can also be used before these critical windows, following the package directions for your child’s age. Check with your child’s doctor before using any cold medicine containing antihistamines or decongestants, especially for children under six.
When to Seriously Reconsider Flying
Most colds cause mild to moderate ear discomfort on a plane, not lasting damage. But some situations call for rethinking your plans. If you’re so congested that you can’t breathe through either nostril even after using a decongestant, your eustachian tubes are likely completely blocked, and no amount of swallowing or gentle blowing will equalize the pressure. That’s when the risk of a ruptured eardrum goes up.
A sinus infection is more concerning than a simple cold. If you have significant facial pain, pressure around your eyes or forehead, or thick discolored mucus, the inflammation is likely severe enough to make pressure equalization very difficult. An active ear infection is another red flag, since the eardrum is already under stress.
What to Expect After You Land
Even with good preparation, your ears may feel clogged or muffled for a few hours after landing. This is common and usually resolves on its own as the swelling in your nasal passages goes down and your eustachian tubes start working normally again. Continuing to use your decongestant for a day or two after the flight and performing the Toynbee maneuver periodically can speed things along.
Rarely, fluid can build up behind the eardrum, leaving you with a persistent clogged feeling and reduced hearing for days. If you notice hearing loss, ringing in your ears, dizziness with a spinning sensation, or any fluid draining from your ear, those are signs of a possible ruptured eardrum. A ruptured eardrum typically heals on its own within a few weeks, but it needs medical evaluation to rule out complications and prevent infection.