Washington, D.C. — Philadelphia flights are offered by 6 airline(s) including Spirit Airlines, JetBlue Airways, Southwest Airlines, American Airlines, Frontier Airlines, United Airlines.
The cheapest one-way flights are usually available on a Wednesday. The average price of a one-way flight is currently $ 92.41. 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.