Washington, D.C. — Philadelphia flights are offered by 4 airline(s) including Spirit Airlines, JetBlue Airways, Southwest Airlines, Frontier Airlines.
The cheapest one-way flights are usually available on a Wednesday. The average price of a one-way flight is currently $ 90.05. The lowest price is $ 77.01 departing on local with Frontier Airlines. Washington, D.C. - IAD is the cheapest airport for flights Washington, D.C. — Philadelphia.