Ah, the water conundrum. You can’t bring a giant bottle of distilled water through security—TSA’s 3-1-1 rule applies to all liquids, even your precious H2O. But don’t fret! You have two options: buy it after security at an airport shop or hotel, or travel dry and use tap water at your destination. Many modern CPAPs have humidifier chambers you can leave empty during the flight.
If you really need water mid-flight, ask a flight attendant for a cup of hot water. They’re used to weird requests, like “Can I have extra pretzels and a splash of hot water for my breathing machine?” Just be nice about it. Tip: bring an empty water bottle through security and fill it at a hydration station before boarding.
Can You Bring Your Cpap Machine On A Plane | Detroit Chinatown