Matt, Jetblue from Logan to Long Beach, CA. It's a little bit of a drive but you'll only pay $50 each way on Jetblue. Besides, you'll probably have to rent a car anyway. Also, the only restriction for bike cases is the total weight has to be less than 99lbs and it will count as your one free check bag. Sooo, fill that sucker up with all your stuff.
UPS Ground is going to be more than $100 each way unless you have a sweet deal. The problem is the box is oversized and they apply a volume weight. I went through this when we went to Nationals and taking it on the flight was a lot cheaper.
When traveling with your bikes knowing the airlines that won't screw you makes all the difference. We always fly via Southwest ($50), but will use Virgin or Frontier if we can't get a Southwest flight.
Shipping simplifies things around dragging the case to the airport (shuttles, rental car limitations...), but there is the need to have an address to ship to, extra time to get there, and extra work of getting it shipped outside of actual travel time.
I recently bought a Hen House bike case after paying all the over-sized fees.
check them out