Tooth Pain When Flying: Why It Happens and How to Prevent It

Editorially reviewed by the Dental.me Editorial Team · Updated July 2026

You settle into your seat, the plane climbs, and suddenly one tooth starts to throb. For a lot of travelers, tooth pain when flying is a real and confusing experience. The good news is that it almost always has a clear explanation, and it points to something you can address on the ground. Dentists call altitude-related tooth pain barodontalgia, and while the cabin pressure change is the trigger, it is rarely the true cause. This guide explains what is happening inside your mouth at 35,000 feet, how to tell a sinus problem from a dental one, and the practical steps that keep the pain from coming back on your next trip.

What Is Barodontalgia (Airplane Tooth Pain)?

Barodontalgia is the medical term for tooth pain that is triggered or made worse by changes in atmospheric pressure. It shows up most often during a flight’s ascent and descent, when the cabin pressure shifts fastest. The pain can feel like a sharp jab, a dull ache, or a deep pressure sensation in a single tooth or a group of teeth.

The key thing to understand is that pressure itself does not damage a sound, healthy tooth. Barodontalgia is what dentists sometimes call a symptom in search of a diagnosis. The flight simply reveals a problem that was already there, hiding quietly until the pressure change forced it to announce itself. That is why recurring flight tooth pain is worth taking seriously rather than writing off as a quirk of travel.

Why Flying Triggers Tooth Pain

As a plane changes altitude, the air pressure in the cabin drops on the way up and rises on the way down. Any pocket of trapped gas or fluid inside or around a tooth responds to that change by expanding or contracting, and if there is inflamed or unhealthy tissue nearby, that movement gets interpreted as pain. Several underlying dental issues set the stage for this:

• An untreated cavity that has reached the sensitive inner layers of the tooth.
• An abscess or infection at the root, where trapped gas and inflammation are already under pressure.
• A cracked tooth that flexes slightly and exposes the nerve.
• A recent or leaking filling with a tiny air pocket underneath that expands as pressure drops.
• Pulpitis, an inflamed nerve inside the tooth, which is exquisitely sensitive to any change.
• Sinus congestion pressing down on the roots of the upper back teeth, which is one of the most common reasons a “tooth” hurts in flight.

Because so many of these causes overlap with everyday toothaches, it helps to understand the general principles of how to relieve tooth pain before your trip so you are not caught off guard at cruising altitude.

Sinus Pain vs. a True Dental Cause

One of the trickiest parts of flight tooth pain is that the sinuses and the upper back teeth sit right next to each other. The roots of the upper molars and premolars are separated from the maxillary sinus by only a thin layer of bone. When you fly with a cold, allergies, or a sinus infection, the pressure change squeezes that congested sinus, and the ache radiates straight into several upper teeth.

Here is how to tell the difference:

• Likely sinus: several upper teeth ache at once, the pain comes with facial pressure or congestion, it is worse on descent, and it eases once your head clears.
• Likely dental: one specific tooth hurts, especially one with a known cavity, filling, crack, or history of sensitivity, and the pain lingers after the flight.

A single tooth that reacts sharply to cold, sweets, or pressure is a classic sign of a dental source. If you already notice that kind of reaction day to day, our guide to tooth sensitivity can help you figure out what is behind it.

Healthy Teeth Usually Don’t Hurt from Flying

This is the single most important takeaway. A tooth with no decay, no cracks, sound fillings, and a healthy nerve generally will not hurt just because you took a flight. Air travel does not create dental problems out of nothing. What it does is act like a stress test, applying gentle pressure that a healthy tooth shrugs off but a compromised one cannot.

So if flying reliably makes a tooth ache, treat that as useful information rather than bad luck. It is your body flagging an underlying issue that deserves a professional look. A tooth that only hurts in the air today can become a tooth that hurts every day tomorrow, and problems like an untreated cracked tooth tend to get worse, not better, when they are ignored.

How to Prevent Tooth Pain When Flying

Prevention is mostly about handling the underlying cause before you ever reach the airport. A few reliable steps:

• See a dentist before you fly. Get cavities, cracks, and worn fillings fixed. Never board a plane with an untreated abscess or right after unfinished dental work that has not fully settled.
• Treat congestion. If a cold, allergies, or a sinus infection is brewing, use an appropriate decongestant before takeoff and stay well hydrated.
• Equalize pressure actively. Chew gum, swallow, or yawn during ascent and descent to help your sinuses and ears adjust smoothly.
• Pre-treat pain if you are prone. Taking an over-the-counter pain reliever before the flight can blunt a familiar ache, as long as it is safe for you.
• Skip very cold drinks during the flight if a sensitive tooth is your weak spot.

What to Do If It Strikes Mid-Flight

If the pain hits while you are already in the air, you have several options to make the flight bearable:

• Take an over-the-counter pain reliever if you have one and it is safe for you.
• Chew gum, swallow, or yawn to help equalize the pressure, especially during descent.
• Apply a warm compress to the cheek over the sore area to ease muscle tension and ache.
• If congestion is clearly part of it, a decongestant can relieve sinus-driven tooth pain.
• Once you land, book a dental visit rather than assuming the problem flew away with you.

Scuba divers experience the very same phenomenon, and often worse, because the pressure swings underwater are larger and faster than in a plane. Barodontalgia in divers is well documented, and the underlying rule is identical: a compromised tooth reacts badly to pressure change, while a healthy one does not.

Red Flags and When to See a Dentist

Some symptoms mean you should not shrug off the pain. Seek urgent care if you have severe or escalating pain, facial or gum swelling, or a fever, because those can signal an active infection or abscess. You should never fly with an active abscess if you can avoid it. The pressure can make the infection worse, and being far from care in a sealed cabin is the last place you want a dental emergency to escalate. If you are unsure whether your situation counts, our overview of what is a dental emergency lays out the warning signs, and our guide to an abscessed tooth explains why infections need prompt treatment.

The takeaway is simple. Tooth pain when flying is almost always your mouth pointing at a dental or sinus issue that needs attention on the ground. It is not something to endure trip after trip. Book a dental checkup, describe exactly when and how the pain shows up, and let a professional find and fix the underlying cause so your next flight is a smooth one.

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