I didn't bring back any fish or game from a trip to Alaska, but did have quite a bit of gear. I also watched/overheard others that were bringing back fish and meat.
You are alloted something like 65 pounds of luggage, in up to two checked bags. Anything beyond this can incurr a charge, depending on the check in agent. I got charged on the way back from AK for less baggage that traveled free from here in CA.
Basically you are going to pay an additional $50 for every extra box you bring back. There's some sort of size limit on the boxes as well, you can't have a single 200 pound box. Most of the people bringing back fish were using boxes provided by a packing house, and there weren't any raised eyebrows. It sure seemed like business as usual.
Scott
http://www2.alaskaair.com/help/faqs/images/HeadsTailsBrochure.pdf
Looks like since 09/11 they changed a few things. They used to allow up to 4 rifles and now only 2, also they've reduced ammo to 50 pounds from 80 pounds. Crap.
I found it by going to Horizon air and then under travel FAQ.
quote:
Originally posted by Roger Rothschild:
...also they've reduced ammo to 50 pounds from 80 pounds. Crap....
Roger-
If 80 pounds of ammo isn't enough, you might want to consider forgetting the hunt part of the trip & concentrating on the fishing! 
. It does have to be packaged in its original package. I was seriously considering heading up to the Noatak River basin this next year to hunt caribou and perhaps bear, but now, well, with the reduction in ammunition to 50 pounds, I may have to reconsider my plans.