Do I need a letter to travel with CPAP?

Most security screeners are likely to be familiar with CPAP machines and similar medical devices. However, if you are traveling to a part of the world that may be less familiar with them, you may wish to carry a letter from your healthcare provider briefly explaining its purpose and your medical need.



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If you bring the water through airport security, they will open and test it for explosives. You may also want to include a letter from your doctor or a copy of your prescription for the CPAP machine, but in most cases, you won't need to show it.

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Bring extra supplies and a copy of your CPAP prescription. Flying Essentials: Your CPAP machine is not counted as carry-on luggage. Invest in a carrying case and bring distilled water if needed. Know Airline Policies: Contact your airline 48 hours in advance to understand their specific CPAP policies.

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Most airlines have specific policies for traveling with a CPAP machine, also referred to as an assisted or medical device. Before flying with your CPAP machine, you'll need to contact your airline at least two weeks prior if not sooner. Let them know you will be bringing a CPAP machine and may need to use it in-flight.

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Yet, more than three-quarters of CPAP users say they use their CPAP machine at least some of the time while traveling. “It's important to pack your CPAP machine whenever you travel, since OSA must be treated continuously, just like any other medical condition.”

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If distilled or filtered water is unavailable, you can consider using bottled water as an alternative. Look for bottles labeled as “distilled” or “purified” to help minimize mineral content. However, keep in mind that not all bottled waters are created equal, and some may still contain minerals and additives.

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Not all hotels will have distilled water readily available, and depending on where you are staying, you also may not be able to purchase it in stores.

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Your device will function normally and safely without water in the tub, but it will no longer provide humidification.

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If you don't add water or if the water in the humidifier runs out, the machine will still deliver pressurized air, but the air will not carry added moisture. Humidification itself is not essential to the effectiveness of CPAP therapy, but it can be important to addressing dryness in the nose or mouth.

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