The first trip is the one people dread. You picture a security line backing up behind you while somebody examines your machine and asks questions you cannot answer.
It is nothing like that. I have taken mine through airports for years, and the checkpoint is the easy part. The mistakes that actually ruin a trip happen when you pack.
Here is what TSA does, what the airline does, and the three things worth doing the night before.
Your CPAP can come on the plane
TSA allows CPAP, BiPAP, and APAP machines through the checkpoint and onto the aircraft. This is settled and published, not a favor anyone grants you.
Bring it in the cabin. Never check it. A checked bag can be delayed, rerouted, or lost, and a replacement at the other end is neither quick nor cheap.
Most airlines do not count an assistive medical device toward your carry-on allowance, so it usually travels in addition to your normal bag. Policies vary, so confirm it with your airline if you are close to the limit.
What happens at the checkpoint
Take the machine out of its case and put it in a bin for X-ray screening. The mask and tubing can stay in the case.
If you would rather the machine did not sit bare in a bin, you can put it in a clear plastic bag first. Bring one from home. Officers see these every day.
If you have TSA PreCheck, the machine, mask, and tubing can all stay in the case and go through as they are.
You may be asked to let an officer test the machine for residue. It takes seconds. A doctor's note is not required, though some people carry one for peace of mind.
Distilled water for the humidifier is exempt from the usual liquid limits in reasonable quantities. You still have to declare it, and it is simpler to travel with the tank empty.
If you are anxious about any of this, TSA Cares will talk you through it beforehand. Call 1-855-787-2227, ideally about 72 hours before you fly.
Pack it the night before, not the morning of
Three mistakes cause most travel trouble, and all three happen at home.
Empty the water chamber completely. Water left in the tank sloshes into the machine. This is the single most common way people arrive with a machine that will not run.
Pack the power cord separately, and check it twice. A forgotten cord is the one thing you cannot improvise. Machines vary and a generic cable rarely fits.
Take spare supplies. One extra cushion and one extra filter weigh nothing. A cushion that fails on day two of a fortnight away is otherwise a ruined trip.
Take a photo of your machine's settings screen before you go. If anything gets knocked, you can restore it without calling home.
Power, at home and abroad
Most modern machines handle both 110 and 240 volts automatically, so international travel usually needs a plug adapter rather than a voltage converter. Check the label on your own machine before you assume it.
Do not use a cheap voltage converter with a CPAP. If your machine is not dual voltage, ask your supplier what they recommend.
Pack a short extension cord. Hotel sockets are rarely near the bed, and a hose pulled tight all night is a leak waiting to happen.
Camping, cabins, and anywhere without power
Battery packs made for CPAP exist and work well. Buy the one matched to your machine rather than a generic power bank.
If you fly with a lithium battery, it must travel in your carry-on, never in checked baggage. Airlines also cap the size, so check before you book.
Turning the humidifier off makes a battery last considerably longer. It is the heater that drains it, not the motor.
Water when you are away
Use distilled water where you can. Grocery stores and pharmacies sell it almost everywhere in the United States.
If you truly cannot find any for a night or two, bottled water is a reasonable short-term substitute. Tap water is the last resort, and it will leave mineral deposits in the tank that are hard to remove later.
Rinse and dry the chamber properly once you are home.
Do not skip nights because you are away
This is the part that matters more than any packing tip. A few nights without treatment brings the tiredness straight back, and it undoes the routine you built.
If you are on insurance and your usage is being monitored, skipped nights can also count against your coverage.
Your next step
Before your next trip, do one thing tonight. Find your power cord and put it in the CPAP bag now, not on the morning you leave.
Then add one spare cushion and one spare filter to the same bag and leave them there permanently. That bag is then always ready.
If you are short on spares, find a supplier near you on CPAPLocator and order before you travel.
*CPAPLocator.com is a directory service only. We are not a medical provider. Content is for informational purposes only. Always consult your healthcare provider.*