Medical

😴 CPAP machine

💼 Cabin bag

Yes

Medical device — exempt from standard carry-on limits at most airlines. Declare it at the checkpoint; it will be inspected separately.

✈️ Hold (checked)

Yes

Permitted.

💡 Tip: CPAP machines don't count as a carry-on item at most airlines — they are treated as a medical device and travel for free. Bring distilled water for the humidifier in your checked baggage (water is a liquid at security).

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Airline-specific rules

🇺🇸American AirlinesDoes not count toward carry-on allowance; FAA-approved for in-flight use.

🇺🇸DeltaPermitted as a medical device, free of charge, and does not count as a carry-on.

🇺🇸United AirlinesAccepted as a medical device in addition to carry-on allowance; advance notice recommended.

🇬🇧British AirwaysCounted as a carry-on item unless a medical certificate is provided.

🇮🇪RyanairTreated as a standard cabin bag; obtain medical clearance to use onboard.

🇦🇪EmiratesAccepted as a medical device in cabin; contact special assistance team in advance for in-flight use approval.

🇦🇺QantasCarried in addition to normal cabin baggage allowance as a medical device with supporting documentation.

Common questions

CPAP machines must be removed from their bag and placed in a separate bin for X-ray screening, similar to a laptop. If the image prompts further inspection, screeners will conduct a physical check of the device. This is routine — declare it proactively at the checkpoint so the process goes smoothly.

The treatment is broadly consistent: CPAP machines are recognised as medical devices and are exempt from standard carry-on size and item count limits at most airlines worldwide. US, EU, and UK carriers are generally aligned on this, though you should confirm the specific policy with your airline before travelling as practices can vary.

Most airlines do not require documentation to carry a CPAP machine as a medical device, but a doctor's letter or prescription can help if airline staff question your exemption claim at the gate. The device will typically be accepted as an additional item alongside your carry-on baggage and personal item.

Use a TSA-approved CPAP bag that can be laid flat and screened without removing the machine entirely, which speeds up the checkpoint process. Carry distilled water for the humidifier separately in your toiletry bag under the 100ml liquid rule, since water in the CPAP reservoir will be flagged. Declare the device to the screening officer before your bag goes through the X-ray.