Only US Airways flies direct nonstop. United advertise but they merely code share on a US Airways plane.
Yes - two of them are US Airways and British Airways.
Flight 1549 of US airways
US Airways, United Airlines, Delta, and Air Canada.
United Airlines US Airways
Those that I know of: ElAl, US Airways and Delta.
Delta, British Airways, US Airways, and United airlines all fly from Phoenix to various cities in Germany. Air France and Lufthansa also fly out of Phoenix to Germany.
i think 10 to 12
US AIRWAYS operates this route.
It is only US Airways since the two cities are so close to each other. The service is also only provided via prop plane.
US Airways
Philadelphia Airport offers flights from 15 different airlines. Some of the airlines offering flights out of Philadelphia Airport are US Airways, Delta, AirTran Airways, Lufthansa, Frontier, Air Canada just to name a few.