I drill and tap all of my bases so I can screw them onto a wooden board for transport. You could easily do the same thing here, just drill some holes into the board and use screws to hold your figures in place instead of patafix, blue tack, etc. The case would do a good job of holding the board in place and protecting the figures. I do wonder how it work if I was flying to a show. Don't know if it could fit in the overhead compartment without turning it on its side.
I have bought a few other items from HobbyZone and have been very happy with them, so the case is worth considering.