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You might feel ready for your holiday, but could your airline ask for a doctor’s letter before you fly? If you’ve recently had treatment, your health has changed, or you need medical equipment on board, it’s a question worth checking before departure.
Having a pre-existing medical condition doesn’t automatically mean you need a fit-to-fly certificate. The paperwork depends on your circumstances and your airline’s rules. This guide explains the difference between a doctor’s letter and medical clearance, when you might need them, and how to prepare for your journey.
What is a fit-to-fly certificate?
A fit-to-fly certificate is a medical letter or form giving a healthcare professional’s assessment of your suitability to travel by air. It may describe your condition, its stability and any support you need during the journey.
Three terms are useful to understand:
- Medical advice: Your healthcare professional’s guidance about travelling with your condition. This may not involve any paperwork
- A fit-to-fly letter: Written medical information or an assessment requested for your flight
- Airline medical clearance: The airline’s process for deciding if it can carry you safely. This may require a medical information form, often called a MEDIF, completed by you and your doctor
You can read more about medical clearance on the CAA website, but check with your airline to find out what you need.
When do you need a fit-to-fly certificate?
You may need a fit-to-fly certificate or medical clearance following recent treatment, if your condition is unstable, or if you need particular medical support on board.
Recent surgery or hospital treatment
Contact your treating team and airline if you’ve recently had an operation or been in hospital. The procedure, your recovery and any complications can affect the advice.
Heart or respiratory conditions
Many people with stable heart conditions can fly. However, a recent heart event, worsening symptoms or breathing difficulties may mean you need assessment or clearance. The British Heart Foundation recommends checking with your GP or heart specialist, particularly after recent treatment.
Airlines can have specific rules even for established conditions. For example, some airlines require a medical certificate confirming fitness to fly for COPD. If you need oxygen or medical equipment, contact your airline before booking.
Recent injuries or plaster casts
A newly fitted cast may require a delay before flying because of swelling. The CAA notes that many airlines apply different restrictions to short and long flights. Check the exact rule with your airline and discuss any cast adjustments with your fracture team.
Pregnancy
The NHS advises that airlines may request a doctor’s or midwife’s letter after week 28. This may be needed to confirm your due date and that your pregnancy is uncomplicated. Check the airline’s pregnancy limits for both journeys.
Recent illness or changes in your health
A recent serious illness, an infectious condition or symptoms that are not well controlled may need further assessment. Tell your airline about relevant changes after clearance has been issued, rather than assuming earlier paperwork still applies.
How do you get a fit-to-fly certificate?
Start with your airline, then contact the healthcare professional who knows your condition.
- Check your airline’s requirements. Ask which form or letter it accepts, who must complete it and the submission deadline. Check each operating airline if your itinerary involves more than one
- Contact your GP, consultant or treating team. Explain your travel dates, flight length and the airline’s request. For pregnancy, your midwife may be able to help
- Arrange an assessment if needed. Your clinician may need current records, test results or an appointment. They may be unable to confirm fitness to fly without enough information, and some practices do not offer this service
- Obtain the appropriate documents. Check that the letter or form includes the details and signatures your airline requests
- Submit paperwork in advance. Keep the response and carry copies during your journey
Some airlines ask passengers needing medical clearance to send their completed form at least seven days before departure.
How much does a fit-to-fly certificate cost?
The cost of a fit-to-fly certificate depends on who provides it and whether you need an appointment or medical assessment.
You may need to pay for the letter, as it is usually a private service rather than part of NHS care. Before requesting one, ask your GP surgery or healthcare provider how much it will cost and how long it will take. Check if appointments or completing airline forms cost extra.
How long is a fit-to-fly certificate valid?
How long your fit-to-fly certificate is valid depends on your airline’s rules and your medical circumstances. Check how close to departure your letter needs to be dated before arranging it.
Ask if the same letter will be accepted for both your outward and return flights. You may not need a new certificate for every holiday if your condition is stable, but check again if your health changes.
Can an airline refuse to let you fly?
Yes. If your airline requires medical clearance and you haven’t arranged it, you may not be allowed to board. Even with a doctor’s letter, the final decision rests with the airline or captain.
If you’re unsure what you need, contact your airline well before your flight. This gives you time to arrange the right paperwork and any support you may need during your journey.
Does Travel Insurance cover you if you need a fit-to-fly certificate?
You may still be able to get Travel Insurance if you need medical clearance to fly. However, a fit-to-fly certificate doesn’t automatically mean you’re covered. You’ll need to check your policy separately.
When arranging Travel Insurance for pre-existing medical conditions:
- Tell your insurer about your health: Answer all medical questions fully and accurately
- Check your conditions are covered: Make sure your insurer has accepted them for cover
- Understand your policy: Check the cover limits and any exclusions that could affect your trip
- Check what happens if your health changes: Your policy will explain when you need to contact your insurer before travelling
If you become too unwell to travel, contact your insurer as soon as possible. They can explain if your cancellation cover applies and what medical evidence you’ll need. Not being able to board because you haven’t arranged the required paperwork doesn’t automatically mean you can claim.
Tips for travelling with a medical condition
Before you travel:
- Discuss your plans: Ask your healthcare professional about your journey if you have concerns or your health has changed
- Plan medication: Keep essential medicines in hand luggage and follow their storage instructions. Read our guide to travelling abroad with medication
- Check medication documents: A prescription or medication letter serves a different purpose from fitness-to-fly clearance. Check UK guidance on taking medicines abroad and destination rules
- Keep information accessible: Carry relevant medical documents, your policy details and emergency contact numbers
- Arrange support: Contact your airline about assistance or equipment. Our guide to travelling with COPD offers further planning tips
Start with your airline’s requirements and give yourself time to prepare. Getting the right information early can help you look forward to your holiday with confidence.
Check what you need before you fly
Having a medical condition doesn’t automatically mean you need a fit-to-fly certificate. Check your airline’s requirements early and speak to your healthcare professional if you have concerns about flying.
With the right paperwork, suitable Travel Insurance and any support arranged, you can focus on looking forward to your holiday.
