Flying with COPD and in-flight oxygen
Most people with COPD fly perfectly safely. The question is whether you need oxygen — and there is a simple test that answers it.
The short answer. Yes — the CAA says most people with COPD can travel safely. The practical test is whether you can walk 50 metres at a normal pace or climb a flight of stairs without significant breathlessness. If you can, you should not need supplemental oxygen. If you cannot, you need assessment before booking.
Why altitude matters more with COPD
At a cabin altitude of 6,000–8,000 feet there is less oxygen in each breath than at sea level. Healthy lungs have plenty of reserve to compensate. COPD reduces that reserve, so the same drop in cabin oxygen produces a bigger fall in blood oxygen than it would in someone without lung disease.
For most people with mild or moderate, stable COPD this is still comfortably within tolerance — which is why the CAA is clear that the majority can travel safely. The issue arises with more severe disease, or where someone is already close to needing oxygen at rest.
The 50-metre test
If a passenger can walk 50 yards or metres at a normal pace, or climb one flight of stairs without significant breathlessness, supplemental oxygen should not usually be required.
It is deliberately simple, and it is a reasonable self-assessment before you speak to anyone. If walking 50 metres on the flat leaves you significantly short of breath, book an assessment rather than a flight.
Formal assessment and the hypoxic challenge
Where there is doubt, respiratory teams use a hypoxic challenge test — you breathe a reduced-oxygen mixture that simulates cabin conditions while your blood oxygen is measured. The CAA notes that supplemental oxygen is indicated where simulated cabin conditions produce an arterial oxygen tension below 55 mmHg.
Arranging oxygen
If you need in-flight oxygen, the airline must be told well in advance via a MEDIF form so the service can be arranged. Airlines differ substantially: some provide oxygen (often for a fee), some require you to bring an approved portable oxygen concentrator, and some restrict which models are permitted. Sort this out before you buy the ticket, not after. How MEDIF clearance works.
Carry all inhalers in your hand luggage — the CAA is explicit about this, and hold baggage does go astray.
When not to fly
Do not fly without assessment if you are breathless walking 50 metres on the flat, if you use oxygen at home, if you have had a recent exacerbation or hospital admission, or if you have had a pneumothorax. An unresolved pneumothorax is an absolute contraindication to flying — trapped air expands at altitude and can become a tension pneumothorax.
Common questions
Can you fly with COPD?
Yes. The CAA states that the majority of people with conditions such as asthma and COPD can travel perfectly safely. Severity and stability decide whether you need oxygen or assessment first.
Do I need oxygen on the plane?
If you can walk 50 metres at normal pace or climb one flight of stairs without significant breathlessness, the CAA says supplemental oxygen should not be required. If you cannot, ask for a formal assessment.
What is a hypoxic challenge test?
A test where you breathe a reduced-oxygen mixture simulating cabin altitude while your blood oxygen is measured, so your respiratory team can see how you would respond in flight. It is the standard way of settling borderline cases.
How do I arrange in-flight oxygen?
Through the airline, well in advance, using a MEDIF form. Policies vary widely — some airlines supply oxygen for a fee, others require an approved portable concentrator. Check before booking.
Can I take my inhalers in hand luggage?
Yes, and you should. The CAA specifically advises carrying all relevant medication including inhalers in the cabin.
How soon can I fly after a pneumothorax?
The CAA says it should generally be safe about two weeks after successful drainage with full lung re-expansion. An untreated pneumothorax is an absolute contraindication.
Related
Sources. The airline and clinical facts on this page were checked against these primary sources on 24 August 2026. Airline policies change without notice — always confirm with your airline before you book or travel.
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