$139 Find cheap flights from Philadelphia to Washington Dulles Airport

In the last 3 days, the lowest price for a flight from Philadelphia to Washington, D.C. Dulles Intl Airport was $139 for a one-way ticket and $159 for a round-trip.

A passport is not required to fly from Philadelphia to Washington Dulles Airport.

American Airlines, Finnair, Iberia, and British Airways offer inflight Wi-Fi service on the Philadelphia to Washington Dulles Airport flight route.

The Airbus A321-100/200 is the aircraft model that flies most regularly on the Philadelphia to Washington Dulles Airport flight route.

Star Alliance, and oneworld are the airline alliances operating flights between Philadelphia and Washington Dulles Airport, with oneworld being the most commonly used for this route.

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Philadelphia to Washington Dulles Airport.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Washington Dulles Airport from Philadelphia is likely to change within 7 days, so travelers know whether to wait or book now.

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Washington Dulles Airport with an airline and back to Philadelphia with another airline. Booking your flights between Philadelphia and IAD can sometimes prove cheaper using this method.

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Washington Dulles Airport from Philadelphia up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.