Should you fly if you have fluid in your lungs?

Persons with any of the following conditions should not travel by air: Pneumothorax (collapsed lung) within 2 to 3 weeks prior to travel. Pleural effusion (excess fluid occurring between the pleural layers) within 2 weeks prior to travel. Major chest surgery within 10 to 14 days prior to travel.



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Having a lung condition should not stop you from travelling by air. Whether you are going on holiday, a business trip or a visit to family and friends, it should be possible to make the necessary arrangements - as long as you plan ahead.

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However, if the breathing rate is already accelerated due to pneumonia and the traveller is unable to take in enough oxygen, this situation, and thus the patient's condition, can deteriorate further.

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Patients with active or contagious chest infections should avoid traveling until they are no longer infectious, as they may infect those sitting next to them. Flying is usually possible 7 to 10 days after the infection, even though the cough and mucus can last up to 3 weeks.

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While the results tend to over-estimate the number of patients requiring in-flight oxygen, they are considered a safe “estimate” as to who can safely fly. Here is how the algorithm works: If the patient has resting saturations of less than 92% they require supplemental oxygen in-flight.

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Low air pressure during air travel also decreases the amount of oxygen in the air. This effect is modest and generally not noticeable for healthy travelers. For patients with significant lung disease, a small decrease in available oxygen can cause significant symptoms, especially with exercise.

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The current international guidelines state that if your oxygen saturation is expected to fall below 85% in- flight, a “High Altitude Simulation Test” should be performed to see whether oxygen is required on the flight and if so, how much oxygen is needed1.

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The impact being in a pressurised aeroplane could have on your symptoms. Whether you have existing chest problems which could mean flying could make your symptoms worse.

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Who should not travel by air? Diseases that prevent you from boarding a plane
  • Chronic obstructive pulmonary disease (COPD)
  • A recent stroke.
  • Infectious diseases, such as chickenpox, influenza or even COVID-19.
  • A recent surgery.
  • A pregnancy of over 28 weeks.
  • Angina (chest pain at rest)


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The most important preventive measure is to avoid flying when symptoms of upper respiratory tract infection are present. When this is not possible, passengers should yawn, swallow, or chew to relieve pressure in the middle ear. Use of the Valsalva maneuver and decongestants or antihistamines may be helpful.

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Sea-level flights allow patients with pneumonia to fly Although some fluctuations in air pressure will still occur in an ambulance plane with a special pressurized cabin, especially during the ascent and descent, these can be compensated for by giving the patient additional in-flight oxygen.

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Choose a seat in the middle of the plane. As the air circulates across the rows and not up and down the plane, some experts believe the worst air is in the front or the back of the plane. Stay well hydrated by drinking lots of fluids (water or fruit juice) and avoiding caffeine and alcohol, which will dehydrate you.

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Airlines “pressurize” the air in the cabin, but not to sea-level pressures, so there's still less oxygen getting to your body when you fly, which can make you feel drained or even short of breath. The potential dehydration factor and sitting for long periods of time doesn't help.

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If you have sinus pressure during flights then you should bring along a decongestant spray (Oxymetazoline or Phenylephrine), found in the nasal aisle at the drug store, and use it approximately one hour before a flight of any duration.

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Infectious Diseases
An airline can deny boarding of any passenger who looks unwell, especially if they suspect the passenger might be infectious (infect other passengers).

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High Altitude and PH In both healthy people and people with PH, blood vessels in the lungs constrict at high altitude, which can cause an increase in pulmonary pressures. This can result in worsening symptoms and decreased exercise capacity in PH patients.

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The only oxygen equipment allowed on an airplane is the portable oxygen concentrator (POC). If you need oxygen in flight, you must take a portable oxygen concentrator with you, and , you must let your airline know ahead of time. They may require a doctor's letter to verify the need for the POC on the plane.

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Airlines are not required to provide oxygen service and many do not. Passengers may carry portable oxygen concentrators (POCs).

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Without oxygen, you will quickly feel drowsy and even euphoric, a phenomenon known as hypoxia, but as time passes, continued lack of oxygen to the brain will lead to blackouts, passing out, and possibly even death.

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