Alaska has a non stop to Seattle from Reagan out of DC, I will be on that one tomorrow, so that might be an option.
For shipping meat I use soft sided cooler like Polarbear brand and hard freeze my meat and pack it to 50lbs no ice. I stick the entire cooler in the freezer to help get it all cold and pack it full with wadded up newspaper. I have found that even paying over weight fees on Alaska is cheaper than shipping, so I just make sure to keep my bags within size limits and under 100lbs, that is 50 bucks and arrives with me. Another item that is handy is a small luggage scale, I use this one, worth every penny. Pays for it self by keeping bags under the limit and preventing the dreaded repack at the ticket counter. Great also for loading on the air taxis.
http://www.amazon.com/gp/product/B0052JL9Z4/ref=oh_details_o04_s00_i00?ie=UTF8&psc=1 
