In reply to the comment that: The FAA allows one pet per passenger in an approved carrier (your sherpa would not be) in the cabin. Sherpa carriers are indeed airline approved. They are the ONLY airline approved soft carrier. You can even call the company to give you information on this. The company has made great efforts to enable pet owners to carry their small pets onboard aircrafts. The make sure your ferret does not unzip the top you can saftey pin the zipper pull to the bag itself. Anissa [Posted in FML issue 1862]