Originally Posted by
airchick
My husband is traveling home with son after packing him out from college. At the airport, he checked a cardboard box (sturdy & properly taped, I'm sure) along with other luggage. TA (United) scolded him at the airport, saying cardboard boxes are no longer approved as shipping containers and the airline will not cover loss or damage.
That's right. A cardboard box can be easily damaged by the automated equipment at some airports and can be crushed in the containers by other luggage. Just make sure he puts nothing that can be damaged into the box and don't worry about it.