Hi. I would drive if you have the time: keep your gear, meat and antlers together and with you.
That said, with work, I don't have the time to drive from NY and have now flown to several hunts.
Coming home the last 2 trips elk hunting in MT/WY, I have shipped clothes and antlers back UPS.
Delta charges checked bags (50lbs) of $30 for first bag, $40, $150 and $200 for each after that...I have checked 150 lbs of meat...I then have put about 40lbs of frozen meat in a dry bag in back pack as carry-on and another 20-30 in a smaller drybag I carry onto the plane.
I have simply put wrapped, frozen meat in 40 liter dry bags from Walmart...They are perfect size for 50 lbs...No issues and no leaking...Meat has stayed frozen from both Missoula and Denver to NY.
It is a pain and even moreso if you are by yourself...it is a separate adventure in itself.
This fall, my return trip will be first class...comes out only slightly more expensive but allows first two checked bags at 70 lbs "free"...plus, you don't have to be one of those guys walking to the back of the plane with 70 lbs in your "carry on."
Check your baggage limits. My flights only allow up to 4 checked bags.
Take care. Mike