Washington, D.C. — Philadelphia flights are offered by 4 airline(s) including Southwest Airlines, JetBlue Airways, Spirit Airlines, Delta Air Lines.
The cheapest one-way flights are usually available on a Tuesday. The average price of a one-way flight is currently $ 129.70. The lowest price is $ 102.26 departing on local with Spirit Airlines. Washington, D.C. - BWI is the cheapest airport for flights Washington, D.C. – Philadelphia.