ArcticDiver
Contributor
Cheap suitcase from Target. Good luck identifying it as "dive gear".
Actually many airlines have such a provision in their Terms Of Carriage. But, unless you somehow tip them off they don't know what is in your baggage.
I've followed the above rule for several years now and have had no problems with damage and only once with the airline knowing it was scuba gear. That time the TSA person opened the bag and the airline saw what was inside. Now, with changed baggage processing I doubt that will happen again.
So, cheap, lightweight bag with no labels and you will be OK.