Carry-on devices Mobility and medical devices don't count toward carry-on limits. If space is limited, the device doesn't fit in the cabin or if it isn't required during the flight, it may need to be checked.

Under 2026 TSA and international aviation regulations, approved medical devices do not count toward your carry-on limit. This means you can bring a CPAP machine, a portable oxygen concentrator (POC), or a breast pump in its own dedicated bag in addition to your standard "personal item" and "carry-on suitcase." To ensure a smooth experience, the device should be in a separate case so it can be easily inspected at the security checkpoint. Most airlines also require that you notify them in advance if you plan to use a POC during the flight to verify that the model is FAA-approved and that you have sufficient battery life (typically 150% of the flight duration). While the device itself is "free" to carry, any non-medical items packed inside the medical bag could potentially cause it to be counted as a regular piece of luggage, so keep the contents strictly limited to the device and its accessories.