Is this the right location North Carolina Winston Salem airport because I’m going to Philadelphia airport …

Piedmont Triad International Airport (GSO) serves Greensboro, High Point and Winston Salem.

PTI= Piedmont Triad International It's the Airport that serves Greensboro, Winston Salem and High Point

Yes

Yes, airport code GSO is the correct airport for a flight from the Triad.

Winston Salem airport small, PTI airport large between Winston Salem and Greensboro. Two different airports, Winston Salem not big enough for jets.

Yes this is the airport in Winston/ Salem area