Can You Fly with Bronchitis or a Chest Infection?

Planning a flight while recovering from bronchitis or a chest infection can be stressful, particularly when breathing or oxygen levels are a concern. Whether you’re returning home after a holiday, visiting family or travelling for work, it is important to understand how flying could affect your breathing, recovery and overall health.

This guide explains what you need to consider before flying with bronchitis or a chest infection, including cabin pressure, oxygen levels, airline medical clearance, portable oxygen concentrator hire, commercial medical escorts and air ambulance options.

Understanding Bronchitis and Chest Infections

• Bronchitis is inflammation of the bronchial tubes and commonly causes coughing, wheezing, breathlessness and mucus production. Acute bronchitis often follows a viral infection and may last several weeks, while chronic bronchitis is usually associated with long-term conditions such as chronic obstructive pulmonary disease (COPD).
• Chest infections affect the lungs or larger airways. Some are mild, while others, including pneumonia, may require urgent medical treatment or hospital admission.

The safety of flying depends less on the name of the condition and more on how unwell you are, whether your symptoms are improving, whether you remain infectious and how well your lungs can cope with the reduced oxygen available inside an aircraft cabin.

Cabin Pressure, Oxygen and Hypoxia

Commercial aircraft cabins are pressurised, but not to sea-level conditions. During a typical flight, the cabin environment may be equivalent to being approximately 6,000 to 8,000 feet above sea level. This reduces the amount of oxygen available with each breath.

Healthy passengers usually tolerate this without difficulty. However, someone recovering from a chest infection, pneumonia or bronchitis may have less respiratory reserve. Reduced cabin oxygen can therefore worsen breathlessness, fatigue, chest discomfort or low blood oxygen levels.

Our guide to flying with a lung condition explains how altitude affects breathing, when additional assessment may be needed and what support may be available.

If you are concerned about whether your oxygen levels will remain safe during a flight, our detailed guide to flying with a portable oxygen concentrator explains airline requirements, battery planning, medical clearance and how to prepare for travel with oxygen.

Contagion and Airline Rules

• Acute bronchitis and chest infections may be contagious, particularly when symptoms are caused by a viral or bacterial infection and you still have a fever, worsening cough or significant mucus production.
• An airline may refuse travel if you appear acutely unwell, require unexpected medical assistance or may present an infection risk to other passengers.
• You may be asked to provide medical clearance, a Fit to Fly letter or an airline medical information form if your condition is recent, unstable or likely to require support during the flight.

A Fit to Fly letter does not guarantee boarding. The airline always retains the final decision, based on its own medical and operational policies.

Is Commercial Air Travel Safe?

In many cases, yes. If your bronchitis or chest infection is mild, you are no longer contagious, your symptoms are improving and your doctor considers you medically stable, travelling on a commercial airline may be reasonable.

• Wait until any fever has resolved and your symptoms are stable or improving.
• Take prescribed inhalers, antibiotics and other medication in your hand luggage.
• Carry enough medication for your full journey, including unexpected delays.
• Stay well hydrated and avoid excessive alcohol before and during the flight.
• Consider wearing a well-fitting mask if you still have a cough or are recovering from a respiratory infection.
• Speak to your GP or respiratory specialist well before travelling if you have an underlying lung condition or normally use oxygen.
• Contact your airline early to confirm whether a Fit to Fly letter, MEDIF form or other medical documentation is required.

If your clinician recommends supplemental oxygen during the flight, or you only require oxygen whilst travelling, you may not need to purchase your own equipment. SkyCare Repatriation offers portable oxygen concentrator rental for commercial flights, cruises and holidays.

Every rental request is reviewed before equipment is supplied to help ensure the selected portable oxygen concentrator is suitable for your prescribed oxygen therapy, journey and medical requirements. If a portable oxygen concentrator is not appropriate, we will discuss alternative travel options with you.

When Should You Speak to a Doctor Before Flying?

If you’re recovering from bronchitis or a chest infection, it’s always sensible to speak to your GP or hospital team before travelling if you’re still feeling unwell. Medical advice is particularly important if you’re still experiencing significant breathlessness, have recently been treated for pneumonia, use oxygen at home, have an underlying heart or lung condition, or are unsure whether you’re fit to fly or remain contagious.

Your clinician may recommend further assessment, such as checking your oxygen levels or providing a Fit to Fly letter if your airline requests one.

Portable Oxygen Concentrator Hire for Travel

If you’ve been advised to use oxygen during your journey, buying a portable oxygen concentrator isn’t always necessary. SkyCare Repatriation offers portable oxygen concentrator hire for flights, cruises and holidays, with every hire request reviewed by our experienced team before equipment is supplied.

Our rental fleet includes lightweight travel models, such as the Inogen Rove 6, together with higher-capability devices, including the SeQual Eclipse 5, for passengers who require continuous-flow oxygen.

Not every portable oxygen concentrator is suitable for every traveller. That’s why we review your prescribed oxygen therapy, current equipment, medical condition and travel itinerary before recommending the most appropriate model for your journey.

Find out more about portable oxygen concentrator hire.

Do I Need a Fit to Fly Letter or MEDIF Form?

Not every passenger requires a Fit to Fly certificate or MEDIF form. Requirements vary between airlines and depend on your medical condition, recent health, whether you need oxygen during the flight and if you’re travelling with medical equipment.

If your airline requests medical clearance, your doctor will usually need to confirm your diagnosis, current condition, medication, oxygen requirements and whether you’re fit to travel safely. As airline approval can take several days, it’s always best to contact the airline’s special assistance team as early as possible.

When a Medical Escort May Be Appropriate

If you’re medically stable but would benefit from professional support during your journey, travelling with a commercial medical escort may be the safest option.

A qualified doctor, nurse or paramedic can monitor your condition, administer prescribed oxygen and medication, assist with airport transfers and respond if your condition changes during the journey. For many patients, this provides a safe and cost-effective alternative to a dedicated air ambulance.

When an Air Ambulance May Be Necessary

A dedicated air ambulance may be required when a passenger is too unwell for a commercial flight or needs continuous clinical treatment and monitoring.

This may include patients with:

• Severe pneumonia or serious respiratory infection.
• Significant breathlessness at rest.
• Unstable oxygen requirements.
• Respiratory failure or a need for ventilatory support.
• Fluid in or around the lungs.
• Recent deterioration or intensive care treatment.
• A need for stretcher transport or ICU-level monitoring.
• A clinical requirement to avoid normal commercial cabin altitude.

Where clinically appropriate, an air ambulance may operate with a sea-level cabin or reduced cabin altitude. This may help patients whose condition could be adversely affected by the lower oxygen environment of a standard commercial flight.

Choose the Right Medical Travel Option

Tips for Flying with Bronchitis or a Chest Infection

• Seek medical advice early. Do not wait until the day before travel if you are still breathless or unwell.
• Contact your airline. Ask about medical clearance, oxygen, portable oxygen concentrators and special assistance.
• Carry medication in your hand luggage. Include inhalers, antibiotics and any emergency medication.
• Take documentation with you. Carry copies of prescriptions, medical letters and airline approvals.
• Stay hydrated. Cabin air is dry and may aggravate coughing and throat irritation.
• Allow extra time at the airport. Rushing through a terminal can worsen breathlessness.
• Request airport assistance. Wheelchair or buggy support can reduce physical exertion before the flight.
• Carry sufficient oxygen batteries. Plan for check-in, boarding, the flight, transfers and unexpected delays.
• Never rely on aircraft seat power. Power sockets may be unavailable, incompatible or switched off.
• Do not travel if your condition worsens. Seek urgent medical advice if you develop severe breathlessness, chest pain, confusion, bluish lips or reduced consciousness.

Next Steps if You Need Medical Travel Support

• Obtain an up-to-date medical assessment and any relevant clinical documentation from your GP or hospital team.
• Confirm whether supplemental oxygen, a Fit to Fly letter or airline MEDIF form is required.
• Contact your airline’s special assistance team and obtain written approval where possible.
• If you need oxygen equipment, complete our portable oxygen concentrator hire request.
• If you need monitoring or clinical assistance during the journey, speak to us about a commercial medical escort.
• If commercial air travel is not medically appropriate, we can discuss a dedicated air ambulance or another suitable repatriation option.

How SkyCare Can Help

SkyCare Repatriation supports patients, families, hospitals, insurers and assistance companies when illness or injury makes travel more complicated.

Depending on your condition and journey, we can assist with:

• Portable oxygen concentrator rental for flights, cruises and holidays.
• Additional batteries for longer journeys.
• Guidance regarding airline medical clearance and MEDIF requirements.
• Commercial medical escorts by doctors, nurses or paramedics.
• Airport and ground ambulance coordination.
• Dedicated air ambulance repatriation for more serious or unstable patients.

Our team will review the available medical information and help you understand the safest and most appropriate travel options.

Bottom Line

Flying with bronchitis or a chest infection can often be safe once you are medically stable, improving and no longer considered infectious. However, reduced cabin oxygen levels can make breathing more difficult, particularly for passengers with underlying lung disease or reduced respiratory reserve.

If supplemental oxygen is recommended, SkyCare Repatriation can help with portable oxygen concentrator rental. Where more support is needed, we can arrange a commercial medical escort or, when clinically necessary, a dedicated air ambulance.

Our priority is to help you choose the safest and most appropriate way to travel based on your condition, oxygen requirements and individual journey.

Reviewed by Dr Lee Collier – SkyCare Repatriation on 21/06/2025 | next review due 21/06/2027 | published on 21/06/2025 | revamped on 11/07/2026