On my trip to AK this last fall, we only brought back frozen fish in with our check in luggage. We flew AK Airlines, and each bag was suppose to weigh #50 or less, so we stayed below, barely, that limit. The big game that we shot was left behind at a local butcher shop and once it was processed, they shipped it to us, I had a tracking number and was able to follow it and go to the airport and pick it up when it arrived. Worked out great. It cost me about $.90# for shipment of the big game meat. Our flight coming home was not a direct flight, had one short layer over, but the fish meat was still frozen solid, total flight time was about 5 1/2 or 6 hours.