An oxygen concentrator is a machine that takes normal room air and, using a series of sieves, filters, and a compressor, removes nitrogen from the air, increasing the oxygen content of the resulting air to up to 96%.
Portable Oxygen Concentrators (POC) are allowed in checked baggage and should be packed to prevent damage, due to their fragile nature -the requirements below are only if the POC is to be used onboard.
Note: An oxygen concentrator is not to be confused with compressed oxygen which is prohibited on any JetBlue aircraft.
Specific models of oxygen concentrators are approved for onboard use as long as the customer meets the following requirements:
Link for Portable Oxygen Concentrators (POC) requirements