Airport security is often the part people worry about most when travelling with a CGM or insulin pump. The reality is that most people go through without any issues, but knowing what to say and what to avoid can make all the difference.
Libre Life Briefing
|
You can wear your CGM through scanners Avoid X-ray for spare devices Tell security early You have options at security Keep all supplies in your hand luggage Bring more than you think you need Airport experiences are usually straightforward |
Can you wear a CGM through an airport scanner?
If you’re travelling with a CGM, this is usually the first question.
In most cases, you can wear your CGM through airport security scanners without removing it. Devices like FreeStyle Libre and Dexcom are designed to stay on your body during screening, including when passing through metal detectors or body scanners.
Where you do need to be careful is with X-ray machines used for hand luggage. Some manufacturers advise that spare sensors, transmitters and receivers should not be placed through these scanners. However, huidance varies depending on the device and scanner type, so it’s best to check your manufacturer’s recommendations before travelling
If in doubt, it's usually possible to request a manual hand inspection.
The simplest way to approach this:
- wear your CGM through security
- avoid X-ray for spare devices
- request a hand check if needed
What actually happens at airport security?
For most people, the process is straightforward once you know what to expect.
You’ll move through security as normal. As you approach, it helps to let staff know:
“I’m wearing a CGM.”
If you have one, you may also choose to present a Medical Device Awareness Card or doctor’s letter. This helps explain your device quickly.
From there, you have a choice. Some people go through the scanner as normal. Others prefer to request a pat-down instead.
If you are carrying spare sensors or equipment, you can also ask for these to be checked by hand rather than going through the X-ray.
Taking a moment to explain your device early usually makes the process quicker and avoids confusion.
What real travellers say
Across multiple traveller discussions, the majority report no issues at airport security.
Most people describe the process as quick and routine. Many pass through without being stopped at all. When devices are noticed, staff usually recognise them or carry out a brief check.
This is where real experience adds useful context.
Real traveller tips: going through airport security with a CGM
These are the patterns that come up again and again from people travelling with CGMs.
What people consistently experience
For most people, airport security is uneventful. Short checks such as swabbing or briefly showing the sensor are common. Longer delays are not.
What helps make it easier
Say it early
“I’m wearing a CGM” is often enough to guide the process.
Know your options
You can go through the scanner or request a pat-down. Both are standard.
Ask for a hand check if needed
Spare sensors and supplies can be checked manually instead of going through X-ray.
Keep things simple
Clear, short explanations work best.
What can vary
Some airports are more familiar with CGMs than others. You may occasionally be asked to show your sensor or explain it.
This is normal and usually resolved quickly.
What experienced travellers recommend
Bring more supplies than you expect to need. Replacing sensors abroad can be difficult.
Keep everything organised in your hand luggage so it is easy to access at security.
Carry a medical card or doctor’s letter if you have one.
Real traveller insight
“I just tell them I’m wearing a CGM and it’s never been a problem.”
CGM and pump airport guidance (2026 comparison)
| Device | Wear through metal detector | Wear through body scanner | Safe in X-ray (baggage) | Recommended approach |
|---|---|---|---|---|
| FreeStyle Libre (2, 3, Plus) | Yes | Yes | No | Wear sensor, hand-check spares |
| Dexcom (G7, ONE+) | Yes | Yes | No | Avoid X-ray for receiver/transmitter |
| Medtronic systems | Usually yes | Often advised to avoid | No | Request alternative screening |
| Omnipod pods | Yes | Yes | Yes (controller usually ok) | Pods stay on body |
| GlucoRx AiDEX | Varies | Varies | Not recommended | Follow guidance, request hand-check |
The key point is consistent across all devices. Avoid X-ray exposure for anything not being worn.
Taking diabetes supplies in your hand luggage
All diabetes supplies should travel with you in the cabin.
This protects insulin from low temperatures and avoids the risk of lost luggage. It also means you have everything you need during the flight.
The NHS recommends taking at least double what you expect to need.
If you are packing for a trip, see our guide to travelling with diabetes and CGMs for a full checklist.
Do airlines allow an extra bag for medical supplies?
Many airlines allow this, although policies vary.
Airlines including British Airways, easyJet, Ryanair, Emirates and Virgin Atlantic allow essential medical supplies in addition to standard cabin baggage.
It is worth checking your airline’s policy before you travel. Some may ask for advance notice or a doctor’s letter.
Do you need a doctor’s letter?
It is not always required, but it is recommended.
A letter can confirm your condition, devices and medication. This can help at security or if you need support while travelling.
Medical Device Awareness Card (UK)
In the UK, the Civil Aviation Authority provides a Medical Devices Awareness Card - devised in conjunction with the mum of a T1D.
This can be shown at security to explain your device quickly and support alternative screening requests.
Hidden disability support at airports
Many UK airports recognise the Hidden Disabilities Sunflower scheme.
Wearing the lanyard can help you access support more easily if needed.
Most airports have a desk providing assistance for travellers with disabilities and may provide sunflower lanyards for use at the airport.
Will your CGM work on the plane?
In most cases, yes.
CGMs continue to function during a flight. You may need to follow airline guidance during take-off and landing.
What about insulin pumps and hybrid-closed loop systems?
Most systems can be used during a flight, although you may be asked to adjust settings temporarily.
It is sensible to carry backup options such as insulin pens and a blood glucose meter.
Managing glucose levels during the flight
Flying can affect glucose levels due to dehydration and changes in routine.
Drink water regularly, keep snacks nearby and monitor your CGM more frequently.
If you are also concerned about hydration when wearing a CGM, see our guide Heat, hydration & hot sensors!
Travelling across time zones
Travelling east shortens your day. Travelling west makes it longer.
Monitoring your glucose more closely during this period helps you adjust safely.
Travel tip: protecting your sensor on the go
Busy airports, luggage straps and crowded spaces increase the risk of your sensor being knocked.
Some travellers choose to wear a CGM armband during travel to help reduce the risk of sensors being knocked or falling off, particularly when moving through security or carrying bags.
Quick checklist before you travel
Check your device guidance
Pack double supplies
Keep everything in hand luggage
Check airline medical baggage policy
Carry a doctor’s letter
Download a Medical Device Awareness Card
Allow extra time at security
FAQs: travelling with a CGM
Can a CGM go through airport scanners?
Yes. CGMs can usually be worn through airport scanners, but should not be placed in X-ray baggage machines.
Should I tell airport security I have a CGM?
Yes. Telling staff early usually makes the process quicker and easier.
Can I request a pat-down instead of a scanner?
Yes. This is a standard option and widely accepted.
Can I ask for my CGM supplies not to go through X-ray?
Yes. You can request a hand check for sensors and devices.
Do I need a doctor’s letter?
Not always, but it is recommended.
Can I take diabetes supplies in hand luggage?
Yes. All essential supplies should be carried in the cabin.
Leave a comment (all fields required). Please note, we are unable to respond to individual comments posted here.