<<...."Just thinkin'...we would drive, but direct air would be available to B-more or Philly ."....>>
Yu should also check out Washington-Dulles in the western burbs of northern VA.
According to MapQuest:
PHL to Emmitsburg, MD - 2 hrs. 44 min.
BWI to Emmitsburg, MD - 1 hr. 19 min.
IAD to Emmitsburg, MD - 1 hr. 22 min.
If course, if you plan to start and finish your tour near Lancaster, then PHL would make sense. But, if you start/end near Chubby's, then BWI or IAD look to be good choices.
<message edited by Glenn1234 on Wed, 06/12/13 8:40 PM>