An FAA-approved CPAP machine is a device that the U.S. Federal Aviation Administration has cleared for use during commercial flights. The FAA requires that any medical electronic device used onboard meet specific safety standards so it does not interfere with aircraft systems. If you rely on CPAP therapy, the good news is that most modern CPAP machines meet these requirements, and airlines are generally accommodating when you plan ahead. Below, we answer the most common questions travelers have about flying with a CPAP machine.
Which CPAP machines are approved for use on airplanes?
Most CPAP and BiPAP machines manufactured in the last decade carry FAA approval for in-flight use. The FAA does not maintain a single published list, but any device labeled “FAA approved” or “for use on aircraft” on its packaging or in its documentation meets the standard. Look for this designation in your device manual or on the manufacturer’s website before you fly.
Popular machines from ResMed, Philips Respironics, and Fisher & Paykel are widely recognized as FAA compliant. Travel-specific CPAP models such as the ResMed AirMini and the Philips DreamStation Go are designed with air travel in mind and almost universally carry the necessary approval. If you are unsure whether your specific model qualifies, contact the manufacturer directly and ask them to confirm FAA compliance in writing, since you may need to show documentation at the gate.
Does FAA approval mean your CPAP is carry-on friendly?
Yes, FAA approval means your CPAP machine is permitted as a carry-on item on commercial flights, and the TSA does not count it toward your carry-on bag allowance. Because it is a medical device, it travels separately from your other bags and goes through the X-ray screening process on its own tray.
That said, carry-on friendly does not mean hassle-free by default. You will need to remove the machine from its case at the security checkpoint, and agents may swab it for trace detection. Keeping your device in a dedicated CPAP travel case makes this process faster and protects the machine from damage. Bringing a copy of your prescription or a letter from your doctor also helps if any questions arise during screening.
What power options do CPAP machines need on a plane?
CPAP machines need either an in-seat power outlet, a compatible airline power adapter, or a fully charged battery pack to operate during a flight. Not every aircraft seat provides a standard AC outlet, so checking your specific flight and seat ahead of time is essential. Many long-haul flights offer power at premium cabin seats but not always in economy.
Here are the most practical power options for flying with a CPAP:
- In-seat AC outlet: Works if the aircraft provides standard 110V or 220V power at your seat. Confirm this with the airline before booking.
- DC power cord: Some planes offer a 12V DC outlet. Many CPAP machines support this with the right adapter cable.
- Portable CPAP battery: A dedicated CPAP battery pack is the most reliable option. Lithium-ion batteries must comply with watt-hour limits set by the FAA, so check the battery’s specifications before packing it.
- USB power (travel models only): Some compact travel CPAPs can run on USB-C power banks, making them especially convenient for shorter flights.
Always avoid using a standard household extension cord or power inverter not rated for aircraft use, as these can create safety issues and may be confiscated at the gate.
Should you use your regular CPAP or a travel CPAP for flights?
For most people, a dedicated travel CPAP is the better choice for flights. Travel CPAP machines are smaller, lighter, and designed to handle the power variability found on aircraft. They are also easier to pack and less likely to be flagged during security screening. However, your regular CPAP is perfectly acceptable if it carries FAA approval and you have a reliable power solution.
The main trade-off with travel CPAPs is that some models offer fewer comfort features than full-size units. If you are highly sensitive to pressure changes or rely on advanced humidity settings, your home machine may deliver a better night’s sleep even if it is bulkier to carry. For short flights where you do not plan to sleep, the distinction matters less. For overnight international travel, a travel CPAP with a battery pack is usually the most practical and stress-free combination.
How do you get a doctor’s letter for flying with a CPAP?
To get a doctor’s letter for flying with a CPAP, contact your prescribing physician or respiratory therapist and request a letter that confirms your diagnosis, states that CPAP therapy is medically necessary, and identifies your specific device by make and model. Most airlines and security agencies accept this as sufficient documentation.
The letter does not need to be elaborate. A brief, signed statement on official letterhead that includes the following is enough:
- Your full name and date of birth
- Your diagnosis (such as obstructive sleep apnea)
- A statement that CPAP therapy is medically required
- The device name and model number
- Your doctor’s name, credentials, and contact information
Some airlines may also ask for a copy of your CPAP prescription. If you received your CPAP through a respiratory care provider, they can typically supply both documents quickly. Having these on hand is not always mandatory, but it removes any ambiguity at the security checkpoint or boarding gate.
What should you tell the airline when traveling with a CPAP?
When traveling with a CPAP, inform the airline at the time of booking that you will be bringing a medical device and ask about in-seat power availability on your specific aircraft. Most airlines have a medical equipment policy, and notifying them in advance ensures you are seated near a power outlet and avoids any surprises at the gate.
Here is a simple checklist of what to communicate to the airline:
- That you are traveling with a CPAP machine as a medical device
- Whether you need access to an in-seat power outlet
- That you may be carrying a lithium-ion battery pack (required disclosure for some carriers)
- A request to confirm the aircraft type and seat power availability before departure
Most airlines are well-practiced at accommodating CPAP users and will not charge extra for the device as carry-on luggage. Being upfront simply makes the process smoother for everyone involved.
How Dream Sleep Respiratory supports your CPAP journey
Traveling with a CPAP starts long before you reach the airport. It begins with an accurate diagnosis and finding the right device for your lifestyle. At Dream Sleep Respiratory, we help patients across Alberta navigate every step of that journey, from sleep testing through to CPAP setup and ongoing support. Here is what we offer to make CPAP therapy work for your life, including when you travel:
- Level 3 home sleep testing: An accessible and effective way to get a confirmed sleep apnea diagnosis without long wait times.
- Personalized CPAP fitting: We match you to the right machine and mask based on your pressure needs, comfort preferences, and lifestyle, including whether you travel frequently.
- Travel CPAP guidance: Our respiratory therapists can advise on travel-friendly device options and help you get the documentation you need to fly confidently.
- Ongoing follow-up: Regular check-ins and machine adjustments ensure your therapy stays effective whether you are at home or on the road.
If you are newly diagnosed or thinking about upgrading to a travel-friendly device, we are here to help. Contact us to book an appointment at one of our Alberta locations and take the next step toward better sleep, wherever life takes you.
Frequently Asked Questions
Can I use my CPAP machine on international flights, not just domestic ones?
Yes, FAA-approved CPAP machines are generally accepted on international flights as well, though rules can vary slightly by country and carrier. Most international airlines follow similar medical device policies, and your FAA compliance documentation is typically recognized globally. It is still a good idea to check with your specific airline and review the aviation authority guidelines for your destination country before departure, particularly if you are flying to regions with stricter electronics regulations.
What happens if the airline loses or damages my CPAP machine?
Because your CPAP is a medical device, it should always travel in the cabin as a carry-on — never in checked luggage — which significantly reduces the risk of loss or damage. If damage does occur during handling or screening, document it immediately with photos and file a report with the airline before leaving the airport. Contact your CPAP supplier or respiratory therapist as soon as possible, as some providers like Dream Sleep Respiratory can assist with temporary replacements or expedited repairs to minimize disruption to your therapy.
Do I need to bring distilled water for my CPAP humidifier on a flight, and can I carry it through security?
Distilled water for your CPAP humidifier is subject to the standard TSA liquid rule, meaning containers must be 3.4 oz (100 mL) or less to pass through security in your carry-on. For longer flights, the most practical solution is to either empty your humidifier chamber before going through security and purchase distilled water at the destination, or simply disable the humidifier for the duration of the flight. Many travel CPAP users find that skipping humidification for a short flight is manageable, especially if they stay well hydrated.
How do I know if my portable CPAP battery is allowed on the plane?
The FAA regulates lithium-ion batteries by their watt-hour (Wh) rating: batteries up to 100 Wh are generally permitted without airline approval, while those between 100 Wh and 160 Wh require airline permission and must be carried in the cabin. Batteries exceeding 160 Wh are not permitted on passenger aircraft. Check the label on your battery pack for its Wh rating before you fly, and contact your airline in advance if your battery falls in the 100–160 Wh range to get written approval.
What if I forget my CPAP machine or it stops working while I'm traveling?
If you forget your CPAP or it malfunctions mid-trip, contact your CPAP supplier or respiratory therapist back home first — some providers can coordinate loaner equipment or connect you with a partner clinic near your destination. In a pinch, many medical supply stores and DME (durable medical equipment) providers in major cities offer short-term CPAP rentals. For future trips, consider storing a digital copy of your prescription and device settings in a secure cloud folder so that any provider can quickly set up a replacement machine to your exact specifications.
Is it safe to skip CPAP therapy for just one or two nights while traveling?
While missing one or two nights of CPAP therapy is unlikely to cause immediate harm for most people, it can lead to disrupted sleep, next-day fatigue, and a temporary return of sleep apnea symptoms — which can be particularly problematic when you need to be alert for travel, meetings, or activities. Frequent travelers with moderate to severe sleep apnea are generally advised not to skip therapy, as cumulative missed nights can affect cardiovascular health over time. Investing in a travel-friendly CPAP setup is almost always worth it compared to the cognitive and physical effects of untreated apnea events.
Can I request a specific seat assignment to make using my CPAP easier on the plane?
Absolutely, and it is strongly recommended. When notifying the airline about your CPAP, ask specifically to be seated in a row with a confirmed in-seat power outlet, which is more commonly found at bulkhead rows, exit rows, or certain premium economy seats depending on the aircraft. Aisle seats are also preferable, as they give you easier access to your bag and more room to manage your equipment without disturbing other passengers. Booking early and calling the airline’s special assistance line — rather than just selecting a seat online — gives you the best chance of securing a suitable spot.