Just about every major airline can get you there. But Northwest is the only scheduled airline currently offering non-stop service. Sun Country is operating on a limited basis with non stop flights, but you have to call them for info, their website currently does not sell the tickets. Also watch Continental, if you don't mind an additional stop - just recently they had $94 round trip fares from MSP-MCO with a stop in Houston. This special was for travel through June.
Personally, I probably will be flying a charter in December since NWA's flights are over $360 PER PERSON!! I'd love to take advantage of the Continental sale if it happens for my dates, but that's a lonnnnnnggg way in the future for me.