Washington, D.C. — Philadelphia flights are offered by 3 airline(s) including Spirit Airlines, Southwest Airlines, JetBlue Airways.
The cheapest one-way flights are usually available on a Wednesday. The average price of a one-way flight is currently $ 133.95. The lowest price is $ 121.35 departing on local with Spirit Airlines. Washington, D.C. - BWI is the cheapest airport for flights Washington, D.C. – Philadelphia.