The USAir flight from Philly used to be cheaper than AirTran. Never had problems with AirTran to Mobay, I just advise you to get to BWI early because lots of folks use AirTran for flights to different islands and its always packed in the mornings. Another option is Southwest...some days you can book an AirTran operated by Southwest or vice versa.....if you see that flight go to the Southwest site to book instead of the AirTran site and your luggage will be free.
Also United flies direct out of IAD (Dulles Airport). If it says operated by Copa Airlines you will get FREE FULLY meals and beverages.
