I flew home with 200+ pounds of elk meat a few years ago:
- shipped (fed ex) all my clothes and the rack (didn't take the cape), this took several days to get to me in NH from Idaho. forget the cost , but wasn't bad.
- packed the FROZEN meat in 50lb wax boxes, 4 of them.
- had my bow case
- crammed the rest of the meat in my carry on

It was around $320 for checked baggage. the meat got home mostly still frozen and that included a several hour layover in Chicago where I saw it sitting on a luggage trolley out in the sun. I was freaking out, but did not lose any meat.

Another successfull hunter in camp over night fed-ex'd his meat, cape and horns from Idaho to MA, it arrived nicely frozen the next day where his wife put it all in the freezer, the price for his peace of mind: $850