If you are looking to go to the PSU @ GaTech game on December 3rd, Northwest Airlines seems to be running a special, or at least has a deal. To fly from Philly to Atlanta with 1 stop, round trip, you can fly Northwest for only $177/passenger. Every other airline is charging over $400 for the same thing.
Linked below is this deal on a 5 day trip (leave Tuesday, Dec 2nd and return on Saturday, Dec 6th). I've been checking airline rates daily for this trip for a little while now, and this is by far the best deal that I have found.
http://www.orbitz.com/App/ViewFlightSearchResults?retrieveParams=true&z=5866&r=1l0&z=5867&r=1l1&lastPage=interstitialEDIT: The link doesn't work. Just go to Orbitz.com and search for a flight from PHL to ATL on 12/2-12/6.
