How Do You Pack a CPAP for Air Travel? Expert TSA and Customs Tips

If you’ve ever stood in an airport security line, wondering how TSA will handle your CPAP machine, you’re not alone. Whether you’re flying domestically or internationally, knowing how to pack your CPAP properly can save you time, stress, and unnecessary hassles at security and customs checkpoints.

The good news? CPAP machines are classified as medical devices, which means they don’t count toward your carry-on limit. But that doesn’t mean you can toss it in your suitcase and forget about it. Security screenings, power adapters, and even customs regulations vary depending on where you’re flying.

So how can you ensure your CPAP makes it safely to your destination? This guide covers everything from TSA screening procedures to customs regulations for international travel, packing tips, and even how to use your CPAP on the plane. With the right preparation, traveling with your CPAP can be smooth and stress-free.

For domestic and international flying tips on other medical devices, be sure to check out our complete guide to Flying with Medical Devices.

1. TSA Rules for Flying with a CPAP (Domestic Travel)

Flying within the U.S. with a CPAP is straightforward, but you need to follow TSA guidelines to avoid delays at security checkpoints. Since CPAP machines are classified as medical devices, they do not count toward your carry-on allowance. However, they must undergo separate screening at TSA checkpoints.

1.1. Do CPAP Machines Count as Carry-On Luggage?

A CPAP machine does not count toward your carry-on bag limit. You can bring it in addition to your carry-on suitcase and personal item without extra fees. However, some airlines require CPAPs to be stored in a separate medical bag rather than packed inside a regular suitcase.

To be safe, check your airline’s policy before traveling. If your airline has specific requirements, having a CPAP travel case can make things easier.

1.2. How TSA Screens CPAP Machines at Security Checkpoints

At the TSA checkpoint, you will need to:

• Remove your CPAP from its case and place it in a security bin for X-ray screening.
• Allow TSA agents to conduct an explosive trace detection (ETD) swab test if required.
• Expect TSA to swab the CPAP machine and sometimes the tubing and mask for explosive residue.

If you’re worried about your device coming into contact with dirty TSA bins, placing it in a clear plastic bag before screening can keep it clean.

1.3. What to Do If TSA Flags Your CPAP for Additional Screening

If TSA flags your CPAP for further inspection, stay calm—this is common and usually only takes a few minutes. TSA agents may:

• Perform additional ETD swab testing.
• Inspect the device manually.
• Ask questions about the CPAP’s function or purpose.

You can politely request that TSA officers wear fresh gloves before handling your machine. If you’re concerned about cleanliness, bring CPAP-friendly disinfecting wipes to clean your device after screening.

KEEN TIP: Place your CPAP in a clear plastic bag before putting it in the security bin. This keeps it clean and prevents direct contact with TSA trays, which can carry germs from other passengers’ items.

2. Customs Regulations for Flying with a CPAP (International Travel)

Traveling internationally with a CPAP requires more preparation than a domestic flight. While CPAP machines are widely recognized as medical devices, different countries have their own customs rules regarding medical equipment. In some cases, you may need documentation to avoid delays at customs. Check your embassy website at your destination.

2.1. Do You Need a Doctor’s Note for Customs?

Many countries allow travelers to bring CPAP machines without restrictions, but some may require a doctor’s note or prescription to verify that the device is medically necessary. This is especially true in countries with strict import regulations on electronic medical devices.

To avoid potential issues:

• Carry a doctor’s note stating that your CPAP is a required medical device.
• Have a copy of your prescription, especially if you need replacement parts abroad.
• If possible, print a translated version of your doctor’s note in the language of your destination country.

2.2. How to Declare Your CPAP at Customs

In most cases, you won’t need to declare your CPAP at customs unless specifically asked. However, if an agent questions your device:

• Politely state that it is a prescribed medical device for sleep apnea.
• Show your doctor’s note or prescription if requested.
• If you’re carrying a CPAP battery, check the country’s restrictions on lithium-ion batteries before traveling.

2.3. Language Barriers and International Travel

If you’re traveling to a country where English is not widely spoken, it helps to be prepared for communication challenges at customs. Some helpful strategies include:

• Using Google Translate to explain your CPAP in the local language.
• Carrying a small travel card that says “This is a medical device for sleep apnea” in the local language.
• Downloading offline translation apps in case you don’t have internet access.

2.4. Power Adapters and Voltage Considerations

Many CPAP machines are dual voltage (100-240V), meaning they can work in different countries with the correct plug adapter. However, some older models may require a voltage converter.

Before traveling:

• Check your CPAP’s voltage rating on the power brick or user manual.
• Bring a plug adapter that fits the outlets of your destination country.
• If your CPAP is not dual voltage, pack a voltage converter to avoid damaging your machine.

KEEN TIP: Research customs rules for your destination before flying. Some countries may have stricter regulations on medical devices, and knowing the rules ahead of time can help you avoid delays.

3. How Do You Pack a CPAP for Air Travel?

Packing your CPAP properly ensures it stays protected, clean, and accessible throughout your journey. Whether you’re flying domestically or internationally, knowing the best way to pack your CPAP can help prevent damage, delays, and unnecessary hassles at security checkpoints. Keep reading about how to pack your spare battery.

3.1. Why Carry-On Is the Best Choice

For most travelers, carrying your CPAP in your carry-on bag is the safest option. Here’s why:

• Avoids damage or loss – Checked luggage is often roughly handled, increasing the risk of your CPAP getting damaged.
• Required for TSA screening – Since TSA requires CPAPs to be screened separately, it’s easier to have it in your carry-on.
• Easier access during layovers – If you have a long layover or an unexpected delay, you may need to use your CPAP. Keeping it in your carry-on ensures it’s always available.

3.2. When Checked Luggage Might Be an Option

While keeping your CPAP in your carry-on is highly recommended, there are situations where checking it might be okay:

• You have a backup CPAP – If you’re traveling with two CPAP machines, you might choose to pack the extra one in your checked luggage.
• You’re carrying a portable CPAP – Some travelers prefer packing a compact travel CPAP in their carry-on while checking their regular CPAP.
• You have limited carry-on space – If your carry-on is already full, you can check your CPAP, but it’s best to pack it in a hard-shell protective case.

3.3. How to Pack Your CPAP Battery

CPAP batteries can be a concern at airport security, as airlines follow strict FAA rules on lithium-ion batteries. If you plan to bring a battery, here’s how to pack it safely:

• Spare lithium-ion CPAP batteries must be carried in your carry-on bag. Airlines prohibit loose lithium-ion batteries in checked luggage due to fire risks.
• If the battery is installed in the CPAP device, it may be checked. However, it’s still best to keep it in your carry-on.
• Check the watt-hour (Wh) rating. Most airlines allow lithium-ion batteries under 100Wh without restrictions. Batteries between 100Wh and 160Wh may require airline approval, while anything over 160Wh is not allowed on board.
• Protect battery terminals. If you’re carrying a spare CPAP battery, keep it in a protective case or original packaging to prevent accidental short circuits.
• Bring documentation. Some travelers carry a note from their doctor explaining the medical necessity of the battery in case of airline questions.

3.4. Essential CPAP Travel Items

Before heading to the airport, make sure you have everything you need for your trip. Here’s what to pack:

✔ CPAP machine – The main unit, which should be packed securely in a travel case.
✔ Tubing and mask – Essential for operation; bring extras in case of breakage.
✔ Filters – Many CPAPs have disposable or reusable filters that need to be replaced regularly.
✔ Power cord and power adapter – Some hotels may not have outlets near the bed, so an extension cord can be helpful.
✔ Backup battery (FAA-approved) – If you’re planning to use your CPAP in-flight, bring a portable CPAP battery that meets FAA regulations.
✔ Power adapter for international travel – If flying internationally, check plug types and voltage compatibility for your destination.
✔ Cleaning wipes – Travel-friendly CPAP disinfecting wipes help keep your mask and tubing clean.

KEEN TIP: Pack extra tubing and a mask in case of breakage. Finding replacement CPAP accessories abroad can be difficult, so having a spare can save you stress.

3.5. How to Pack Distilled Water for Your CPAP

If you use a CPAP humidifier, you may be wondering how to bring distilled water for your machine while complying with both TSA liquid restrictions and customs regulations when traveling internationally. While CPAP water is not always available at your destination, there are ways to ensure you have what you need without issues at security.

3.5.1. Can You Bring Distilled Water Through TSA Security?

TSA’s 3-1-1 liquid rule applies to distilled water, meaning any container larger than 3.4 ounces (100 mL) is not allowed in carry-on bags unless it qualifies as a medical exemption. Read all about TSA medical liquid exceptions. This means you can bring it, as it is a medical necessity but a note from your doctor explaining this will make the process much smoother.

To bring distilled water in your carry-on:

✔ Label it clearly as “medical-use distilled water,” and provide a doctor’s note. TSA agents are more likely to approve it if they know it’s for a CPAP.
✔ Pack it separately from other liquids and declare it at security.
✔ Be prepared for additional screening. TSA may open and test the liquid.

If TSA does not allow it through, you can:

• Buy distilled water after security from an airport store.
• Bring a reusable water bottle and fill it with distilled water at your destination.
• Request a supervisor and show them your medical letter.

3.5.2. Can You Pack Distilled Water in Checked Luggage?

Yes! If you need to bring a larger quantity, checked luggage is the best option. To prevent leaks:
✔ Use a sealed, leak-proof container.
✔ Place the bottle in a plastic zip-top bag for extra protection.
✔ Wrap it in clothing or bubble wrap to cushion it from impact.

3.5.3. Bringing Distilled Water Through International Customs

Some countries restrict the import of liquids, including bottled water. To avoid problems at customs:

✔ Check country-specific regulations before bringing distilled water.
✔ Declare it on your customs form if required and provide customs agent your medical necessity letter from your doctor.
✔ If in doubt, buy distilled water after arrival instead of bringing it from home.

3.5.4. Alternatives to Packing Distilled Water

If you can’t bring or find distilled water at your destination, consider these alternatives:

• CPAP Waterless Humidifiers – Some CPAP models have waterless humidifier options, eliminating the need for distilled water.
• Boiling tap water – If necessary, you can boil tap water for 5 minutes and let it cool before use. While not ideal, this removes many impurities.

KEEN TIP: Pack an empty, collapsible water bottle and buy distilled water after security or upon arrival. This saves space and avoids TSA or customs issues.

4. Can You Use a CPAP on the Plane? Airline and In-Flight Guidelines

If you’re taking a long-haul flight or traveling overnight, you may want to use your CPAP during the flight. Most airlines allow CPAP use, but there are some important rules to follow, especially when it comes to power sources and seating arrangements.

4.1. Does Your Airline Allow CPAP Use in Flight?

ost major airlines allow passengers to use a CPAP machine in flight, but each airline has different policies. Some airlines require advance notice or a doctor’s note, while others may have restrictions on where you can sit if you plan to use your CPAP. CPAPs are considered assistive devices and you are protected by law: As long as the device is FAA-approved and you follow your airlines tips for advance notice, you should be fine.

Before your flight:

• Check your airline’s medical device policy on their website.
• If required, notify the airline in advance that you plan to use a CPAP.
• Ask about power availability—not all seats have power outlets.

4.2. Will You Have Access to Power on the Plane?

Not all airplane seats have power outlets, so if your CPAP needs continuous power, it’s essential to check before boarding.

• First-class and business-class seats are more likely to have power outlets.
• Economy seats may or may not—this varies by airline and aircraft type.
• Some airlines offer CPAP-compatible power ports, but you may need a special airplane power adapter.

If your seat doesn’t have power, you’ll need to bring an FAA-approved CPAP battery.

4.3. Bringing a CPAP Battery for In-Flight Use

If there’s no guarantee of an in-seat power outlet, a portable CPAP battery is the best option. However, airlines only allow certain types of batteries on planes.

✔ Choose an FAA-approved lithium-ion CPAP battery (under 100Wh per battery).
✔ Bring extra battery capacity if flying long-haul. Some airlines allow up to 160Wh with airline approval.
✔ Keep the battery in your carry-on—lithium-ion batteries cannot be packed in checked luggage.

4.4. Seating Restrictions for CPAP Use

Some airlines may restrict where you can sit if you plan to use a CPAP in-flight. Common restrictions include:

• No seating in an exit row (power outlets may be unavailable).
• No bulkhead seating unless power outlets are confirmed.
• Some airlines require window seats to avoid blocking other passengers.

If you need extra space for your CPAP setup, check if your airline allows seat selection for medical needs—some do this free of charge.

KEEN TIP: Carry a universal power adapter if flying internationally. Different airlines and airports may have unique outlet types, so having the right adapter ensures you can use your CPAP wherever you go.

5. Frequently Asked Questions (FAQs)

5.1 Do I need to clean my CPAP differently after flying?

Yes, after flying, it’s a good idea to wipe down your CPAP with disinfecting wipes to remove any germs it may have picked up at security checkpoints or in the airplane cabin. If possible, clean the tubing and mask with CPAP-friendly soap and warm water once you reach your destination.

5.2 Can I bring my CPAP accessories in a separate bag?

Yes, you can carry CPAP accessories (such as tubing, masks, and filters) in a separate medical bag, which should not count against your carry-on limit. However, to avoid confusion, it’s best to pack all CPAP-related items together in a dedicated CPAP travel case.

5.3 What happens if my CPAP is damaged in transit?

If your CPAP is damaged during air travel, immediately report it to the airline before leaving the airport. Some airlines may offer compensation for medical devices damaged in checked luggage. If you packed your CPAP in your carry-on and it was damaged at security, file a claim with TSA Customer Service. Always travel with a backup mask or tubing in case something breaks.

5.4 Can I rent a CPAP machine at my destination instead of bringing mine?

In some major cities, you may be able to rent a CPAP machine if you don’t want to bring yours. However, availability varies, and rental costs can be high. It’s generally safer to bring your own CPAP, as rental machines may not be properly sanitized or compatible with your specific settings.

5.5 Are there CPAP models designed specifically for travel?

Yes! Many brands offer portable travel CPAP machines, which are smaller, lighter, and easier to pack than traditional models. Some travel CPAPs also come with built-in batteries, making them ideal for flights without power outlets. However, always check if your travel CPAP meets airline requirements before flying.

5.6 Can I use my CPAP in an airport lounge or during a layover?

Yes, many airport lounges and gate areas have power outlets where you can set up your CPAP during a long layover. If you plan to nap between flights, look for quiet lounges or designated rest areas where you can use your device comfortably.

6. Wrap Up

Traveling with a CPAP may seem complicated at first, but with the right preparation, it can be completely hassle-free. Understanding TSA screening procedures, knowing international customs regulations, and packing your CPAP correctly will help you avoid unnecessary delays and keep your machine safe throughout your journey.

For domestic flights, TSA requires CPAP machines to be screened separately, and placing your device in a clear plastic bag can help keep it clean. If you’re traveling internationally, check the customs rules of your destination—some countries may require a doctor’s note or proof of medical necessity. Regardless of where you’re flying, keeping your CPAP in your carry-on ensures it stays protected from loss or damage.

If you plan to use your CPAP in-flight, research your airline’s policies in advance. Not all seats have power outlets, so bringing an FAA-approved CPAP battery can give you peace of mind. Additionally, a universal power adapter is essential if you’re traveling to a country with different electrical outlets.

By planning ahead, packing smart, and knowing what to expect at security, you can make air travel with a CPAP stress-free. A little preparation goes a long way in ensuring you get the restful sleep you need—whether you’re flying across the country or around the world.