I use Kayak to find deals, but ALWAYS book at the airlines actual website. The cost is always less, sometimes not much but other times you can save quite a bit. I think we saved 50 total with our latest booking.
AirTran blows, my husband used to travel weekly and I cannot count the number of times he was f**ked over. And that's not counting the time they screwed over our whole family leaving us stranded at Newark overnight. Without so much as a soda and a sorry.I skim over any flight with AirTran doesn't matter how much less the cost. I have zero faith the times they list are anything more than guesstimates. There customer service is equally terrible.