Flying with epilepsy: what to prepare, who decides fitness to fly, and how to handle medicine across time zones

You booked a flight and wonder what epilepsy means for it. This text sorts the open questions: fitness to fly, airline forms and medicine across time zones. Keep the plan on paper or in the seizure diary in Sam. Sleep from Apple Health sits in the same app, a few taps from the entry. You can also set medication reminders for times on the ground. Fitness to fly is not something Sam decides; that call sits with your neurologist and the airline.

Can you fly with epilepsy, and who decides?

Most people with epilepsy can fly safely, says Epilepsy Action, so the first answer is often yes. Whether it is safe for you is your neurologist's call, and the airline sets its own rules. Three parties each decide a part:

• Your neurologist judges your seizure risk, answers medicine questions and can write a fitness-to-fly letter.
• The airline sets any form or letter it requires. The UK Civil Aviation Authority (CAA) says an airline's medical guidance must always be followed, even after your specialist has advised you.
• Your destination and transit countries decide which medicines you may bring in.

The CAA says passengers with neurological conditions should discuss their travel plans with their treating specialist before the journey. If your seizures usually come in clusters or you have had a long, uncontrolled seizure, a flight may need extra care. Whether that applies to you is for your neurologist to say.

What do the aviation rules say?

The CAA gives one clear lower bound: after a seizure, wait at least 24 hours before flying, and carry your emergency medicine. It adds that people whose epilepsy is not controlled, or who have new onset of seizures, need medical clearance before a flight.

Many airlines follow the guidelines of the International Air Transport Association (IATA). Epilepsy Action says these ask for medical clearance if you have had a tonic-clonic seizure less than 24 hours before your flight. You usually do not need clearance if your seizures are well controlled. Check the form your airline asks for, which is often called a MEDIF.

These are floors, not permission. If your epilepsy is new or your seizures continue, raise it with your neurologist and the airline's medical team before you book.

What should you discuss with your neurologist before booking?

Go into the appointment with written questions. For a trip, these help:

• Does anything here argue against this flight for me?
• Will you write a fitness-to-fly letter, on my airline's form if it has one?
• Does my supply cover the whole trip, with spare doses for delays?
• Do any travel vaccines or malaria tablets I might need fit my epilepsy medicines?
• What do I do about my medicine if I am unwell, or if the times shift?

Discuss medicine timing across time zones before you fly. Your treatment team sets how to handle it. Epilepsy Action says you can gradually shift your medicine times before you leave, and that your doctor, nurse or pharmacist can advise you on this. Do not change times or amounts on your own, not even on the travel day.

What goes in your travel folder?

A short folder makes things clear for airline staff and, if needed, medical staff:

• A letter from your doctor with your diagnosis and medicine list, in English.
• A copy of your prescription.
• The airline form, if it asks for one.
• Any letter you need to carry a rescue medicine across a border; check with the embassy of each country.

Epilepsy Action advises carrying your epilepsy medicine in hand luggage in its original packaging, with a copy of your prescription or a letter from your doctor. Pack extra in case of delays, and put some in other luggage in case a bag is lost. UK airports allow essential liquid medicine over 100 ml in hand luggage if you carry proof it was prescribed. In the US, the TSA allows medically necessary liquids in reasonable quantities if you declare them at the checkpoint. Keep the travel folder in one place on your phone so you are not searching mid-trip.

How do you handle medicine across time zones?

A time zone shift can push a dose into the middle of your night, especially on long-haul flights. That is normal planning, not an emergency. The CAA says to keep essential medicines in hand luggage, stick to your medicine schedule diligently on long trips, and consider potential delays when packing. Packing a little extra is the sensible response.

Your neurologist answers what to do with the times. Epilepsy Action notes that a time difference can make it hard to take medicine at your usual time, and that a reminder helps. In Sam you can set medication reminders for the hours you need, so a long day does not wipe out a dose.

How do sleep and jet lag matter on a long trip?

Lack of sleep can be a seizure trigger for some people, Epilepsy Action says. Jet lag plus a long day of travel can add up. It suggests booking reasonable flight times to avoid sleep deprivation. On the flight, it suggests drinking water, avoiding caffeine and alcohol, and sleeping if it is night at your destination.

The epilepsy hub in Sam holds more on how sleep and seizures sit together: sleep and epilepsy: your triggers in view.

What to log before and during the trip?

A short log gives your neurologist a clear picture after the trip. It judges nothing; it records what happened. A few rows are enough:

Bring the log to the follow-up and let your neurologist place it. A single rough night explains nothing. If the pattern repeats across flights, that is conversation worth having. For living day to day around this, see living with epilepsy: sleep, routines and daily life. If you are still in the early weeks after a diagnosis, start with newly diagnosed with epilepsy: your first weeks.

Record your trip around the flight in Sam and take it to your neurologist

You bring a record of the weeks around your flight instead of an impression. The epilepsy program is a diary with a doctor report and a monthly questionnaire; it starts after you switch on that a doctor diagnosed your epilepsy.

• Instead of paper: an entry you make on the day sits next to sleep and resting heart rate from Apple Health, when a value exists. You add only what you know yourself.
• Instead of memory: the doctor report as a PDF covers the period you choose, such as the month before departure.
• Instead of loose notes: medicine reminders cover scheduled daily doses, and you mark each dose as taken, adjusted or skipped.

Sam does not replace a fitness-to-fly letter or an airline form.

Try Sam Health

Sam is a wellness companion, not a medical device. The app does not diagnose, treat, cure or prevent any condition or health state. Always consult qualified professionals for medical decisions.

Related reading

• Newly diagnosed with epilepsy: your first weeks
• Sleep and epilepsy: your triggers in view
• Living with epilepsy: sleep, routines and daily life
• Festival or concert with epilepsy: flashing lights
• Colleague Has Epilepsy: First Aid at Work

Sources

Updated: October 2026

• UK Civil Aviation Authority: Neurology: guidance for health professionals
• UK Civil Aviation Authority: Assessing fitness to fly
• Epilepsy Action: Travelling abroad with epilepsy
• Epilepsy Action: Travel tips for a smooth summer holiday
• TSA: Medications - liquid