Bringing Peach's post over from the sightings thread:
Almost certainly on one of these (NOT AA codeshares though) and there was a direct fight for her at 11ish...
Checking Rome next
There are these options available for the delayed poster:
From Athens via Rome to Philadelphia, 0555-0700 connecting to 1155-1555
From Athens via Amsterdam to Philadelphia, 0600-0830 connecting to 1045-1320
From Athens via Frankfurt to Philadelphia, 0610-0815 connecting to 1100-1355
From Athens via Munich to Philadelphia, 0610-0745 connecting to 1215-1515
All these have their second leg (from Europe to Philadelphia) on an American Airlines flight, although the first leg isn't.
From Rome, Amsterdam, Frankfurt, and Munich they could probably be headed anywhere. Most likely Asia (but not the Middle East, those have more direct connections I think).