Yes, you can take cremated pet remains onboard as a carryon item. Cremated remains must be inspected at the security checkpoint and cannot be accepted as checked baggage. We recommend transporting the remains in a temporary plastic or cardboard container typically provided by the crematorium. This is to make sure that the item can be cleared by X-ray screening. If it cannot, it will be opened for a physical inspection. If a remains container cannot be screened, it is not allowed past the security checkpoint.