Passengers may transport crematory remains as part of their carry-on property or checked baggage. Some airlines do not allow crematory remains as checked baggage, so check with your airline first. If carrying on the crematory remains, they are subject to screening and must pass through the X-ray machine. If the X-ray Operator cannot clear the remains, TSA may apply other, non-intrusive means of resolving the alarm. Under no circumstances will an officer open the container, even if the passenger requests this be done. If the officer cannot determine that the container does not contain a prohibited item, the remains will not be permitted.
The conainer needs to be X-ray scanable. Scan-able containers include: cardboard, fiberboard, cloth, plastic, transparent glass and wood. Non-scan-able containers that may be prohibited are metal, stone, ceramic or metalized glass.