Marlasmom beat me to it; cheaptickets.com has given me some great rates for our trip to Orlando in January, and even out of Richmond, VA which is unheard of because it's a smaller airport with less frequent flights.
We usually have to fly out of Baltimore or Washington, D.C. which is anywhere from 1 to 1 1/2 hours drive...just to get to the airport! If we can snag a flight out of Richmond, we're grabbing it!
Good luck!