No, you do not need a specially certified or labeled “FAA-approved CPAP machine” to fly. The FAA does not maintain an official approval list for CPAP devices. However, airlines do require that your CPAP machine meet certain standards, and the FAA has specific rules about using electronic medical devices on board. If you use CPAP therapy for sleep apnea, understanding these rules before you travel will save you a lot of stress at the gate. Below, we break down everything you need to know about flying with your CPAP machine.
What does the FAA actually require for CPAP machines on flights?
The FAA does not publish a formal list of approved CPAP machines. Instead, the FAA requires that any portable electronic medical device used on a commercial flight must not interfere with the aircraft’s systems. In practice, this means your CPAP machine must be FCC-compliant and, in most cases, carry an FAA acceptance label or documentation confirming it meets aviation standards for electromagnetic interference.
Many CPAP manufacturers voluntarily test their devices against FAA guidelines and mark them accordingly. When shopping for a travel CPAP, look for language on the device or in its documentation that states it is acceptable for in-flight use. Airlines may also ask to see this documentation, so keeping a copy of your device manual or a letter from your prescribing clinician is a smart move.
It is also worth noting that the FAA classifies CPAP machines as portable oxygen concentrators only when they deliver supplemental oxygen. A standard CPAP or BiPAP that delivers pressurized room air falls under a different category, which generally makes the approval process more straightforward.
Can you use a CPAP machine during a flight?
Yes, you can use a CPAP machine during a flight, but you need to notify your airline in advance. Most major airlines permit in-flight CPAP use, provided the device meets their electronic medical equipment policy and you have notified them at least 48 hours before departure. Some airlines may require a letter from your doctor or respiratory therapist confirming your medical need.
A few practical points to keep in mind:
- Not all seats have accessible power outlets, so request a seat near a power source when you book.
- Some airlines provide power at no extra charge for medical devices; others may charge a fee.
- Battery-powered CPAP operation is an option on many modern devices, but airlines have their own rules about battery types and capacities, so confirm before you travel.
- Always carry your CPAP as a carry-on rather than checking it. Checked baggage is subject to rough handling and temperature extremes, both of which can damage the device.
International flights follow similar principles, but regulations can vary by country and airline. If you are flying internationally, check the policies of each airline you will be using and research the destination country’s rules around medical devices.
How do you get through airport security with a CPAP machine?
Getting through airport security with a CPAP machine is straightforward once you know the process. In Canada and the United States, CPAP machines must be removed from their carrying case and placed in a separate bin for X-ray screening, similar to a laptop. You do not need to remove the water from the humidifier chamber before screening, though traveling with an empty chamber reduces the chance of spills.
Here are a few tips to make the security process smoother:
- Place your CPAP in an easy-to-access bag so you can remove it quickly at the checkpoint.
- Carry a copy of your prescription or a letter from your clinician in case security officers have questions.
- Let the security officer know you have a medical device before the screening begins.
- If you are concerned about X-ray exposure to your device, you can request a manual inspection, though this is rarely necessary.
- A CPAP machine does not count toward your carry-on baggage allowance on most airlines when it is medically necessary, but confirm this with your airline before you travel.
What should you look for in a travel-friendly CPAP machine?
A travel-friendly CPAP machine should be compact, lightweight, and explicitly documented as suitable for in-flight use. Beyond size, the most important features to evaluate are power compatibility, battery options, and altitude adjustment capabilities.
Size and weight
Travel CPAP machines are significantly smaller than standard home units. Many weigh under one kilogram, making them easy to pack without adding much to your carry-on. If you travel frequently, a dedicated travel unit is often worth the investment rather than carrying your full-size home device.
Power and battery compatibility
Look for a device that supports universal voltage input (100 to 240 volts), which means it will work with a simple plug adapter in most countries. Battery compatibility is equally important for long-haul flights where seat power may not be available. Lithium-ion battery packs designed for CPAP use are widely available, but check that your airline permits the battery’s watt-hour rating before you pack it.
Altitude adjustment is another feature worth seeking. Cabin pressure at cruising altitude differs from ground level, and some CPAP machines automatically adjust their pressure delivery to compensate, ensuring your therapy remains effective throughout the flight.
Does travel with a CPAP affect your sleep apnea treatment?
Travel with a CPAP machine does not need to disrupt your sleep apnea treatment, but skipping therapy during trips can have real consequences. Even one or two nights without CPAP therapy can allow sleep apnea symptoms to return, including fragmented sleep, oxygen desaturation, and daytime fatigue. Consistent use of your device, even while traveling, is essential to maintaining the health benefits of your treatment.
A few common travel scenarios and how to handle them:
- Short overnight trips: Bring your CPAP even for a single night. The disruption of sleeping in a new environment combined with untreated sleep apnea can leave you exhausted for days.
- Camping or off-grid travel: Battery packs or solar charging options make CPAP use possible even without access to mains power.
- International travel with time zone changes: Jet lag already disrupts sleep quality. Using your CPAP consistently helps your body recover faster by ensuring the sleep you do get is restorative.
- Accommodation concerns: If you are unsure whether your destination will have the right power outlets or adapters, plan ahead and pack the appropriate converters.
The goal of CPAP therapy is long-term, consistent use. Gaps in treatment, even short ones, can reduce the cumulative benefits you have worked to build. If you find travel compliance difficult or have questions about optimizing your therapy on the road, our team at Dream Sleep Respiratory is here to help. We work with patients across Alberta to ensure their CPAP setup supports their lifestyle, whether at home or away. Contact us to speak with one of our respiratory therapists about travel-ready CPAP solutions tailored to your needs.
Frequently Asked Questions
Can I bring both my home CPAP and a travel CPAP on the same flight?
Yes, you can bring both devices, but keep in mind that only the medically necessary CPAP typically qualifies as a free carry-on exemption — not both units simultaneously. If you are transitioning to a travel CPAP or need your home unit at your destination, consider checking your home device as luggage in a hard-sided, well-padded case. Always confirm your airline’s policy on multiple medical devices before you travel.
What type of batteries are allowed on planes for CPAP use, and how many can I bring?
Most airlines follow FAA and IATA guidelines, which permit lithium-ion batteries up to 100 watt-hours (Wh) in carry-on baggage without prior approval, and batteries between 100–160 Wh with airline approval. Batteries exceeding 160 Wh are generally prohibited on passenger aircraft. Check your specific battery’s Wh rating printed on the label, bring no more than two spare batteries, and always carry them in your carry-on — never in checked baggage.
Do I need a doctor's letter every time I fly with my CPAP, or is a one-time document enough?
There is no universal rule, but having a current letter from your prescribing clinician or respiratory therapist is strongly recommended for every trip. Airlines and security agencies may request documentation at any time, and an outdated letter could cause delays. Keep a dated, signed letter on hand that confirms your diagnosis, your need for the device, and that it is medically prescribed — ideally updated annually or whenever your prescription changes.
What should I do if my CPAP machine is damaged or lost during a flight?
If your CPAP is damaged or lost, report it immediately to the airline’s baggage services desk before leaving the airport and file a written claim. This is one of the strongest reasons to always carry your CPAP as a carry-on rather than checking it. Travel insurance policies that include medical equipment coverage can help offset replacement costs, so consider adding this to your travel plan. In the meantime, contact your CPAP provider or a local supplier at your destination — many can arrange short-term rentals or loaner devices.
Will the change in cabin pressure affect my CPAP pressure settings during the flight?
Cabin pressure in commercial aircraft is typically pressurized to the equivalent of 6,000–8,000 feet (roughly 1,800–2,400 metres) above sea level, which can slightly affect how a CPAP delivers pressure. Many modern CPAP machines include an automatic altitude adjustment feature that compensates for this difference, ensuring your therapy remains effective throughout the flight. If your device does not have this feature, speak with your respiratory therapist before your trip — they can advise whether a manual pressure adjustment is warranted for high-altitude travel.
Can I use distilled water for my CPAP humidifier when traveling internationally, and what if I can't find it?
Distilled water is always the recommended choice for CPAP humidifier chambers because it prevents mineral buildup and bacterial growth. When traveling internationally, distilled water can be harder to find, but it is available at most pharmacies and large supermarkets worldwide. If you absolutely cannot source distilled water, using bottled still water is an acceptable short-term alternative — avoid tap water, sparkling water, or flavoured water. You can also travel with an empty humidifier chamber and skip humidification for short trips, particularly in humid climates where the added moisture may be less critical.
Are there any countries where traveling with a CPAP machine could cause customs or import issues?
In most countries, a CPAP machine carried for personal medical use is not subject to customs duties or import restrictions, especially when accompanied by a valid prescription. However, a small number of countries have stricter regulations around importing medical devices, so it is wise to check with the destination country’s customs authority or your airline before departure. Carrying your prescription letter, the device’s original documentation, and any relevant manufacturer paperwork will help customs officers quickly confirm the device is for personal therapeutic use rather than commercial import.