As part of booking roundtrip flights which depart from US airports, Orbitz is pleased to offer airline tickets on US Airways, which operates 2 non-stop flights from St Thomas Island, Virgin Islands (STT) to Philadelphia (PHL) departing between 1:45pm and 4:00pm on select days of the week. Usually a Boeing 757 is flown for this route. The average travel time from St Thomas Island, Virgin Islands to Philadelphia, PA is 4 hours and 7 minutes.