I've only done this once, so keep that in mind (hopefully doing it again at the end of Sept )

I had 200+ lbs of meat from a 4x5 full. I flew it home on the plane with me, cost was around $300 for the extra baggage. Another guy at camp shipped his overnight and he flew home the head/cape as well, cost him a bit over $600, but he thought it was worth it to know it was at home and in the freezer.

Check the airlines for specific rules, but I THINK generally you get 2 checked bags and 1 carry on. Checked bags must be under 50lbs or they cost extra and anything over the second bag cost extra. If you can ship home your bow and anything else you can, it might save you.

run the numbers to figure out the best way to do it, is it better to have 2 100lb bags (check the max they accept as well) or 4 50 lb bags??

I also filled my carry on (backpack) with frozen meat wrapped in sweatshirts, was heavy to tote around the airport, but made it home just fine.