Philadelphia — Washington, D.C. flights are offered by 4 airline(s) including Spirit Airlines, JetBlue Airways, Frontier Airlines, Delta Air Lines.
The cheapest one-way flights are usually available on a Wednesday. The average price of a one-way flight is currently $ 137.17. The lowest price is $ 124.38 departing on local with Spirit Airlines. Philadelphia - PHL is the cheapest airport for flights Philadelphia – Washington, D.C..