CPAP machines should go in your carry-on bag, not checked luggage
A CPAP machine (continuous positive airway pressure device) is medical equipment you use nightly to treat sleep apnea. Airlines allow you to bring it on the plane, but the Transportation Security Administration (TSA) and most airlines recommend carrying it with you rather than checking it. The machine is sensitive to pressure changes, temperature swings, and rough handling that happen in the cargo hold—any of these can damage the motor, humidifier, or tubing and leave you without treatment during your trip.
If you absolutely must check your CPAP, it is possible on most carriers, but you are taking a real risk. The better approach is to pack it as a carry-on item, where you control how it is handled and where temperature and pressure stay stable.
Key Takeaways
- The TSA allows CPAP machines in carry-on bags without counting against your bag limit, and this is the safest way to travel with one.
- Checked luggage exposes your machine to pressure changes, extreme temperatures, and rough handling that can break internal parts.
- If you check your CPAP anyway, pack it in a hard case with padding, remove the humidifier water tank, and notify the airline in advance.
- Airlines have different policies on checked medical equipment, so call your carrier before you book to confirm what they allow.
- Bring your prescription or a letter from your doctor if TSA agents question why you are carrying medical equipment.
Why carry-on is the TSA-recommended option
The TSA treats CPAP machines as medical devices and allows them through security screening in your carry-on bag. You do not have to remove it from your bag at the checkpoint, and it does not count toward your one personal item or carry-on allowance—it travels as an additional medical device. This means you can bring your CPAP, a regular carry-on roller bag, and a personal purse or backpack all on the same flight.
When you reach the security line, let the officer know you are carrying a CPAP. They may swab it for explosive residue as a routine check, but the machine itself will not be confiscated or damaged. The device stays with you from the moment you leave home until you reach your destination, which eliminates the risk of loss or damage in transit.
What happens to checked luggage in the cargo hold
Checked bags go into the cargo hold, where conditions are very different from the passenger cabin. The temperature can drop to 50°F or lower, and the air pressure is lower than at sea level. CPAP machines have electronic components and motors that are not designed to withstand these extremes. Rapid pressure changes can damage the humidifier chamber or cause internal seals to fail. Temperature swings can affect the motor's performance or crack plastic parts.
Baggage handlers also stack and move checked bags roughly. A CPAP machine in a soft suitcase can shift during loading and unloading, and the impact can break the tubing connector, crack the motor housing, or damage the humidifier. Even a machine packed carefully can arrive at your destination no longer working.
How to pack a CPAP if you must check it
If your airline does not allow carry-on medical devices or you have no other option, use a hard-sided case designed for CPAP machines or a sturdy hard-shell suitcase. Wrap the machine itself in bubble wrap or foam padding, leaving at least two inches of cushioning on all sides. Place the wrapped machine in the center of the case and fill empty spaces with soft items like clothing or towels.
Remove the humidifier water tank before packing—do not leave water inside. Water can spill during handling and damage the motor or electronics. Pack the tank separately in your carry-on or leave it empty until you arrive. Include the power cord, tubing, and mask in the case, also wrapped individually in soft material.
Close the case and mark it clearly with your name and phone number on a label. Some travelers write "FRAGILE—MEDICAL EQUIPMENT" on the outside, though this is not required. Take a photo of your packed machine before you leave home in case you need to file a damage claim later.
Notifying the airline before you travel
Call your airline at least 48 hours before your flight and tell them you are traveling with a CPAP machine. Ask whether they allow medical equipment in checked luggage and what their specific rules are. Some carriers have a medical equipment declaration form you must fill out, while others straightforward note it in your reservation. A few airlines may require advance notice or have restrictions on certain types of machines.
When you arrive at the airport, mention the CPAP to the agent at check-in if you are checking it. This creates a record that you declared medical equipment, which is important if the machine arrives damaged. The airline is more likely to honor a damage claim if you documented the contents before checking the bag.
What to bring to prove it is medical equipment
Carry a copy of your prescription for CPAP therapy or a letter from your doctor stating that you require the machine for sleep apnea treatment. This document is not required by the TSA, but it can speed up the security screening process if an officer questions why you are carrying the device. A prescription or doctor's letter also helps if you need to file an insurance claim for a damaged machine.
Keep the letter in an straightforward-to-reach pocket of your carry-on bag, not buried at the bottom. If you are traveling internationally, check the rules for your destination country—some nations have different regulations for medical devices, and a doctor's letter makes it clear the machine is for personal medical use, not for resale.
Traveling with extra supplies and accessories
Pack your CPAP mask, tubing, filters, and power cord in your carry-on bag along with the machine. These items are small and lightweight, and keeping them with you means you have everything you need if your checked luggage is delayed. Bring at least one extra filter, because airplane air is dry and filters can clog faster during travel.
If you use a humidifier, pack the tank separately and fill it with distilled water after you arrive at your destination. Tap water can leave mineral deposits inside the humidifier and damage it over time. Many hotels have distilled water available, or you can buy a small bottle at a drugstore near your hotel.
Frequently Asked Questions
Will TSA make me turn on my CPAP machine at security?
No. TSA does not require you to power on medical devices during screening. They may swab the machine for explosive residue, but they will not test its function. If an officer asks you to turn it on, you can politely decline—it is not part of the standard screening process.
Can I use my CPAP on the airplane?
Most airlines do not allow you to use a CPAP during flight because the machine requires a standard electrical outlet, which is not available at most seats. Some newer aircraft have power ports in business or first class, but economy seats typically do not. Use your machine before boarding and after you land.
What if my CPAP arrives damaged?
File a damage claim with the airline within 24 hours of arrival. Bring the machine, your packing materials, and photos of the damage. Include your receipt or proof of purchase. The airline may repair or replace the machine, though coverage varies by carrier and policy.
Do I need to declare my CPAP at customs when traveling internationally?
You do not need to declare a personal CPAP machine for your own use. However, if you are traveling with multiple machines or equipment that looks commercial, bring a doctor's letter to show customs officials it is for personal medical treatment.
Can I pack my CPAP in a regular suitcase instead of a hard case?
You can, but a hard case offers much better protection. If you use a soft suitcase, wrap the machine in at least two inches of bubble wrap or foam padding on all sides and surround it with soft clothing. A hard case is worth the investment if you travel frequently with your machine.