Rick ... My case came with D-rings to attach a strip, with I did. The case is almost as tall as I and it's made out of wood and is very heavy. At 5', I don't have the leverage to carry it for any length of time. I end up having to shift it from shoulder to shoulder and can only carry it by the handle in my right hand, because of the carpal tunnel in my left.

BTW ... I do decrease my string tension, when I fly, but just a little. Among luthiers, there are two camps on this issue, so I stay sort of in the middle.