I can husle from Term C to the F gates (aka the commuter world) in about 15 minutes if the bus that takes you there dosent take forever. But you don't need a bus for Term E. It's a walking trip but, they also have the moving sidewalks. I nice plus, but you know how people are, always taking up the whole darn thing. Realistically, I would give yourself atleast 20 minutes to hop over there.
I only see the 737 sitting over there sometimes. Where does that thing go from PHL?