Fit to Fly Certificate in Phuket: Same-Day Doctor Assessment for Your Airline
Clinically reviewed by Dr. Ponlawat Pitsuwan, Physician, Takecare Clinic Phuket. Last reviewed: September 2026.
“Fit-to-fly requests in Phuket usually arrive with a deadline attached: a flight tomorrow morning, a leg in a splint after a scooter fall, or a check-in desk that has noticed a cast or crutches. The question for us is always the same, and it is a medical one, not a paperwork one: is this person safe in a pressurised cabin for the next ten or twelve hours, far from a hospital? Most people are. When someone is not, telling them honestly is the most useful thing we can do.” Dr. Ponlawat Pitsuwan
What a fit-to-fly certificate is
A fit-to-fly certificate is a letter from a doctor confirming that, on the day of examination, you are medically fit to travel by air. It describes your condition, any relevant findings, and whether you need anything special on board, such as extra legroom for a leg in a cast or wheelchair assistance at the airport. Some airlines accept a letter; others require their own form, often called a MEDIF (medical information form), which a doctor completes and the airline’s medical team reviews. When a form is required by the airline, a letter alone will not do, so bring the correct form with you.
The certificate is a medical judgement, not a formality. Aircraft cabins are pressurised to the equivalent of roughly 1,800 to 2,400 metres altitude, so the air contains less oxygen and gas in body spaces expands. Most people never notice. For someone with a lung infection, recent surgery, trapped air after an injury or a clot risk, those changes can matter.
Who needs one
Airlines usually want a doctor’s letter for pregnancy beyond about 28 weeks, after recent surgery, after a serious illness or hospital stay, and after an injury that is visible at check-in, such as a fresh cast, a sling or crutches. They may also ask if you have had a recent infectious illness, such as chickenpox or COVID-19, or if staff are concerned you look unwell at the gate. Requirements vary between airlines and routes, so check your airline’s own rules before your appointment.
| Situation | What the doctor checks | Things to know |
|---|---|---|
| Pregnancy beyond about 28 weeks | Weeks of pregnancy, single or multiple, any complications | Many airlines stop allowing travel in late pregnancy; limits differ by airline |
| Fracture, cast or splint | Swelling, circulation, pain control, mobility | Some airlines have rules on fresh plaster casts; you may need extra legroom |
| After a chest infection or pneumonia | Breathing, oxygen saturation, temperature | Low oxygen levels at rest may mean you need more recovery time |
| After recent surgery | Wound, type of operation, discharge notes | Waiting times depend on the operation; your surgeon’s advice counts |
| Chickenpox or other infectious illness | Stage of rash or illness, fever | You may need to wait until you are no longer infectious |
| Recovering from a stomach bug or dengue | Hydration, blood pressure, blood count if relevant | Usually fine once drinking normally and fever has settled |
What happens during your assessment, step by step
You register with your passport and flight details, and tell the team which airline you are flying with and what they have asked for. If you have a MEDIF or airline form, bring it. A nurse measures your temperature, pulse, blood pressure and oxygen saturation, the percentage of oxygen carried in your blood, measured with a clip on your finger.
The doctor then takes a history focused on flying: what happened, how you are recovering, your medicines, any previous blood clots, and how long the flight is. The examination depends on the problem. For a chest infection, it includes listening to your lungs; for a leg injury, checking swelling, circulation and how well you can move; for pregnancy, reviewing your pregnancy notes and any complications. If a test would change the answer, such as a blood count after dengue, it can be done on site.
If you are fit to fly, the doctor writes and signs the certificate in English, including any recommendations such as an aisle seat, extra legroom or assistance. If you are not yet fit, the doctor explains why, what treatment will help, and when to be reassessed. We will not issue a certificate that says you are fit when you are not, because the person at risk in the air is you.
Practical logistics
Come as early as you can before your flight, ideally a day or two ahead, so there is time to treat anything that needs it. Many airlines want the letter dated close to your departure date, often within a few days of the flight, so tell us the exact date and time you fly. That said, we are open 24/7 and understand that some requests are last-minute. Bring your passport, flight details, the airline’s requirements or MEDIF form, and any medical documents such as hospital discharge notes, X-ray reports, pregnancy notes or previous certificates. If a hospital in Phuket treated you, bring their discharge summary.
If you cannot easily come in, for example with a leg in plaster, a doctor visit to your hotel or villa can include the fit-to-fly assessment. The certificate always needs an in-person examination; it cannot be issued from a phone or video call. We confirm the price on WhatsApp before your visit, and your travel insurer may cover the assessment if it relates to an illness or injury during your trip.
The Phuket angle
Many of the fit-to-fly letters we write in Phuket follow scooter accidents: fractured wrists and ankles, and deep grazes on arms and legs. After a crash, our team provides motorbike accident care and can later assess whether you are fit for the flight home. Others follow a stomach bug, dengue or a chest infection that has left someone weak before a long-haul flight. Pregnant travellers who have extended their stay, or whose flight home has been delayed, also need letters as they approach their airline’s limit.
Long-haul flights from Phuket to Europe, Australia or the Middle East add another factor: prolonged sitting, which increases the risk of deep vein thrombosis (DVT), a blood clot in the leg. The risk is higher after leg injuries, surgery, in pregnancy and in people with previous clots. The doctor can advise on walking, calf exercises, hydration and, where appropriate, compression stockings.
When to see a doctor
See a doctor before your flight if you have had any significant illness, injury or surgery during your trip, if you are pregnant and past about 28 weeks, if you have had a fever or infectious illness in the last few days, or if you feel short of breath walking short distances. If your airline has told you it needs a letter, do not leave it until the airport.
Some symptoms mean you should not fly at all and need urgent care now. Chest pain, sudden breathlessness, coughing up blood, or a painful, swollen calf can signal a blood clot. Severe tummy pain or bleeding in pregnancy needs immediate assessment. For these, call 1669 or go straight to a hospital emergency department.
Prevention and early detection
Plan ahead to avoid being turned away at the airport. Read your airline’s medical and pregnancy policies before you book, and again if anything changes during your trip. If you are pregnant, carry your pregnancy notes and know your expected due date. If you have had surgery or an injury, ask the treating doctor when it will be safe to fly and get it in writing before you leave the hospital.
On the flight itself, reduce your clot risk by walking the aisle when you can, flexing your ankles regularly, drinking water, and limiting alcohol. If you have extra risk factors, discuss compression stockings with the doctor. Keep all regular medicines in your hand luggage, with enough for delays.
Visiting Takecare Clinic in Phuket
You can walk in for a fit-to-fly assessment at any time of day or night: Takecare Clinic Bangtao (Cherngtalay) is the closest branch to Phuket International Airport, Takecare Clinic Kata-Karon serves the southern beaches, and Takecare Clinic Patong is in the centre of Patong.
If you are not sure whether you need a certificate, WhatsApp us your airline and situation and we will advise, or call 081-718-9080.
We provide a medical report and itemised invoice for insurance, and offer direct billing with most travel insurers.
Related services and treatments
A fit-to-fly letter is one of several documents we issue; our page on getting a medical certificate in Phuket covers sick notes, insurance letters and diving certificates. If you are running short of regular medicine before a long journey home, ask about a prescription refill in Phuket at the same visit. For health advice before your next trip, including vaccines and malaria advice, see our travel medicine in Phuket service. And if you just need a quick consultation on the way to the airport, a walk-in doctor in Phuket is available at every branch.
Summary
A fit-to-fly certificate is a doctor’s confirmation that you are medically safe to travel by air. Airlines usually ask for one in pregnancy beyond about 28 weeks, after surgery or serious illness, and after visible injuries, but rules vary, so check yours. At Takecare Clinic Phuket, a doctor examines you in person, 24/7, at Bangtao, Kata, Patong or your hotel, and issues a signed English letter the same visit when you are fit to fly, or explains honestly what needs to happen first.
“Come the day before your flight, not the morning of it. If there is something we need to treat, that one day is usually the difference between flying home on time and rebooking.” Dr. Ponlawat Pitsuwan
Frequently asked questions
How quickly can I get a fit-to-fly certificate in Phuket?
In most cases the certificate is issued during the same visit, once the doctor has examined you and confirmed you are fit to travel. Our branches are open 24/7, so you can come at any hour. Allow extra time if you need a test first, and bring your airline’s form, because completing the correct document the first time avoids delays.
Do I need a fit-to-fly letter when pregnant?
Many airlines ask for a doctor’s letter from about 28 weeks of pregnancy, confirming your due date, that the pregnancy is uncomplicated and that you are fit to fly. Most airlines also set a final week after which they will not carry you, often earlier for twins. Rules vary by airline, so check yours before your appointment.
Will my airline accept your certificate?
Our certificates are written in English and signed by a licensed physician, with the clinic’s details and the examination findings, which is what airlines generally need. Some airlines insist on their own MEDIF form or send your case to their medical team for approval. Tell us your airline and bring any form they have given you.
Can I fly with a cast after a scooter accident?
Often yes, but it depends on the injury, how recent the cast is and the airline’s rules. Swelling inside a fresh cast can be a problem at altitude, and a leg cast may need extra legroom. The doctor checks circulation, swelling and pain control, and writes any seating or assistance needs into your certificate.
Can I get a fit-to-fly certificate without an examination?
No. A fit-to-fly certificate is based on an in-person examination on the day, so it cannot be issued over the phone or by video. If you cannot come to the clinic, a doctor can examine you at your hotel or villa anywhere in Phuket and issue the certificate there.
What if the doctor says I am not fit to fly?
The doctor explains the reason, starts any treatment that will help, and tells you when to come back for reassessment. We can provide a medical report for your travel insurer, since many policies cover changed flights or extra accommodation when a doctor advises against flying. Contact your insurer and airline early.
Sources
IATA Medical Manual. RCOG: Air travel and pregnancy. CDC Yellow Book: Air travel.
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This page is general health information and not a substitute for a medical consultation.