I have always found the best prices on Orbitz, but they do not usually offer tickets form the the smaller airlines which can be much cheaper. Next year we are planning on using Allegiant, they only fly into Sanford/Orlando but two tickets + an economy car for the week is over $100 cheaper than flying into Orlando Intl. and no car. I have heard good things about Southwest also, but they do not fly out of my home town. I would drive 2 hours to the closest Southwest airport if the price was right though.