Thanks for the replies. The route to the airport turned out to be very well marked, and I had no trouble getting there. I'm actually waiting to board my flight now and enjoying the free broadband wireless here. Nice airport.
Funny thing is I'm heading to Cincinnati to catch a connection to Orlando, and the Cincinnati airport is closer to my home than Lexington's. Had I flown directly out of Cincinnati, though, the flight would have cost $200 more.