Is It Safe to Fly With a Tooth Infection or Severe Toothache?

If you have a holiday or business trip approaching and you're dealing with dental pain, you're not alone in wondering whether it's safe to fly with a tooth infection or severe toothache. It's one of the most commonly searched dental concerns, particularly during peak travel seasons.

This article explains how flying may affect dental pain, what happens to teeth and infections at altitude, and when it may be advisable to see a dentist before you travel.

Understanding Barodontalgia: Why Teeth Hurt at Altitude

Barodontalgia is the clinical term for dental pain caused by changes in atmospheric pressure. When a tooth is damaged — through untreated decay, a failing restoration, a crack, or an infection — small pockets of air or gas can become trapped. As cabin pressure drops during ascent, these pockets expand, stimulating the nerve and producing pain.

In the case of a dental abscess, the infection may produce gases as a byproduct of bacterial activity. These gases, trapped within the confined space of the tooth or jawbone, can expand at altitude, leading to a sharp increase in pressure and pain.

Symptoms That May Indicate a Tooth Infection Before Flying

• Persistent, throbbing toothache that does not resolve with over-the-counter pain relief
• Swelling in the gum, cheek, or jaw area near the affected tooth
• Sensitivity to hot or cold that lingers after the stimulus is removed
• A bad taste in the mouth, which may indicate pus or drainage from an abscess
• Difficulty opening the mouth or pain when biting down
• A raised bump on the gum near the affected tooth
• General feelings of being unwell, including mild fever or fatigue

What Could Happen if You Fly With an Untreated Dental Infection?

Increased pain at altitude is the most common concern. Pain relief options on board are limited. In some cases, an untreated infection may spread to surrounding tissues — you can learn more about how quickly a tooth infection can spread. On long-haul flights, managing significant swelling or systemic symptoms could be challenging.

Each case is different — not every toothache will worsen during a flight. However, seeking a dental assessment before travelling is a prudent step.

When Should You See a Dentist Before Flying?

• You have had a toothache lasting more than one or two days that is not improving
• There is visible swelling around a tooth or in the jaw area
• You have recently had dental treatment and are still experiencing significant discomfort
• A filling, crown, or restoration feels loose or has come away
• You notice pus or discharge from the gum near a tooth
• You are experiencing pain when biting or chewing

Managing Dental Pain During a Flight

• Over-the-counter pain relief — paracetamol or ibuprofen, taken according to instructions
• Avoid very hot or cold drinks — lukewarm water is generally a gentler option
• Chew on the unaffected side to avoid placing pressure on the painful tooth
• Stay hydrated — the cabin environment can be dehydrating
• Avoid alcohol — may interact with pain medication and contribute to dehydration
• Pack a small dental first aid kit — temporary filling material and clove oil may provide short-term relief

How Dental Infections Develop

Most dental infections begin with tooth decay. When bacteria produce acids that erode the enamel, a cavity forms. If untreated, this deepens into the dentine and potentially the pulp chamber. Once bacteria reach the pulp, they cause pulpitis. If the infection continues, the pulp tissue can die and infection can spread beyond the root tip, forming a periapical abscess.

Prevention: Reducing the Risk of Dental Problems Before Travel

• Attend regular dental check-ups — particularly worthwhile if you have a trip planned
• Maintain a thorough oral hygiene routine with fluoride toothpaste and interdental cleaning
• Address known dental issues promptly, especially if travel is on the horizon
• Be mindful of dietary habits — frequent sugar and acid increase decay risk
• Wear a mouthguard if you grind your teeth at night

Key Points to Remember

• Flying with a tooth infection or severe toothache may lead to increased pain due to barodontalgia
• Existing dental problems are more likely to cause discomfort at altitude
• Flying does not cause infections, but it may worsen symptoms of pre-existing issues
• If you have persistent dental pain or signs of infection, seek a dental assessment before flying
• Regular dental check-ups and good oral hygiene are the best preventative measures

Frequently Asked Questions

Can a tooth infection become dangerous during a flight?

A dental infection is unlikely to become immediately dangerous during a flight in most cases. However, flying with an active infection may cause significant pain increases due to cabin pressure changes, and access to dental care is unavailable until you land.

Should I take antibiotics before flying with a toothache?

Antibiotics should only be taken if prescribed by a dentist or doctor following a clinical assessment. Not all toothaches are caused by infections, and self-medicating is not recommended. Read our detailed guide on whether you need antibiotics for a tooth infection.

Can I fly after having a tooth extracted?

It is often advisable to wait at least 24 to 48 hours before flying after an extraction, as pressure changes could potentially disturb the blood clot. Discuss timing with your dentist.

What should I do if my tooth starts hurting badly during a flight?

Take over-the-counter pain relief if suitable for you, avoid very hot or cold drinks, chew on the unaffected side, and inform the cabin crew if you are in significant distress. Seek dental attention as soon as practicable after landing.

Every dental situation is unique and requires individual assessment. If you're concerned about dental pain before upcoming travel, our team at South Kensington Medical & Dental is here to help. Call 020 7183 2362 or book a pre-travel dental assessment at our South Kensington clinic.

This article is intended for general informational purposes only and does not constitute dental advice, diagnosis, or treatment recommendation. South Kensington Medical & Dental is regulated by the Care Quality Commission (CQC). All dentists are registered with the General Dental Council (GDC). Medical practitioners are registered with the General Medical Council (GMC).