This is what I did 2 years ago when I shot my elk in Montana. We had it butchered & packed in six - 70 lb boxes. The airlines charged us about $70, a box to load on the plane. I read somewhere that you could stuff all your frozen meat in a golf bag and the airlines would not charge you extra for the weight.

The guide built a box & shipped my antlers whole, with out splitting them for $80. and he didn't charge me, because we gave him oneof our harvestedelk for the winter.