Flying with a heart condition
Stable is the word that matters. A well-controlled heart condition rarely stops anyone flying; a recent event is a different matter entirely.
The short answer. Usually yes, if the condition is stable. The CAA’s restrictions are about recent events, not about having a heart condition: 7 to 10 days after an uncomplicated heart attack, 4 to 6 weeks if it was complicated, 3 days after an uncomplicated stent, and 10 days after bypass surgery.
CAA waiting times after a cardiac event
| Event | Wait before flying |
|---|---|
| Heart attack, uncomplicated | 7 to 10 days |
| Heart attack, artery successfully reopened | As little as 2 to 3 days |
| Heart attack, complicated | 4 to 6 weeks |
| Angioplasty with stent, uncomplicated | 3 days |
| Coronary artery bypass graft | 10 days |
| Stroke | 10 days, or 3 days if stable |
Why the cabin matters at all
At cruising altitude the cabin is pressurised to roughly 6,000–8,000 feet, so there is less oxygen available than at sea level. A healthy heart compensates without anyone noticing. A heart with limited reserve — because of heart failure, significant coronary disease or a recent event — has less capacity to do that, and the demands of a travel day sit on top: walking a terminal, carrying bags, missing sleep, stress.
That is why the restrictions are framed around recency and stability rather than diagnosis. Angina that is well controlled and predictable is not a problem. Angina that has become unstable in the last fortnight very much is.
What the CAA lists as contraindications
The CAA names these as cardiovascular reasons not to fly on a commercial aircraft: uncomplicated heart attack within 7 days; complicated heart attack within 4 to 6 weeks; unstable angina; decompensated heart failure; coronary artery bypass graft within 10 days; and uncontrolled arrhythmia.
When not to fly
Do not fly, and seek medical advice, if you have chest pain at rest or on minimal exertion, breathlessness that has worsened recently, ankle swelling that is increasing, palpitations you have not had assessed, or if you have had a cardiac event in the last few weeks that has not been reviewed. If you get breathless walking 50 metres on the flat, that is the CAA’s own practical threshold for needing assessment.
Common questions
How soon can I fly after a heart attack?
The CAA allows travel after 7 to 10 days if there were no complications, and says travel may be possible after as little as 2 to 3 days where the blocked artery was successfully reopened. If the heart attack was complicated, the guidance is 4 to 6 weeks.
How soon can I fly after a stent?
The CAA says patients with an uncomplicated angioplasty and stent may be fit to travel after 3 days, but stresses that individual assessment is essential.
Can I fly with heart failure?
Stable, well-controlled heart failure is usually compatible with flying. Decompensated heart failure — where symptoms have worsened, you are more breathless or your fluid balance is off — is listed by the CAA as a contraindication.
Do I need medical clearance from the airline?
For a stable long-standing condition, usually not. For a recent event, a change in symptoms, or if you need oxygen, most airlines require formal clearance through a MEDIF form reviewed by their own medical department. Start it early — it takes days.
Will airport security affect my pacemaker or ICD?
Modern devices are not affected by walk-through archways, but it is reasonable to show your device card and request a hand search instead. More on flying with a pacemaker.
What about clot risk on long flights?
Relevant, particularly if you are less mobile or have had recent surgery. Move regularly, stay hydrated, and ask your cardiology team whether compression stockings are appropriate for you.
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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