CA $290 Cheap Flights from Philadelphia (PHL) to Washington (IAD)

View CA $290 flight on Mon, Sep. 8, 2025Opens in a new window

Popular airlines from Philadelphia International Airport (PHL) to Washington Dulles International Airport (IAD)

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Cheap flights from Philadelphia (PHL) to Washington (IAD)

Prices were available within the past 7 days and start at CA $290 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Find the cheapest month to fly from Philadelphia (PHL) to Washington (IAD)

April is typically the cheapest month to fly

From CA $233 - CA $877 per traveller.

Graph displaying average flight prices per month

Flight from Philadelphia to Washington (PHL - IAD) route information
Origin airport
Philadelphia Intl.
Destination airport
Washington Dulles Intl.
Distance
214 km
Average flight time
1 hour 7 mins

Philadelphia to Chantilly Flights

The easy way to book your flights from Philadelphia to Washington 

With Expedia, it’s simple to find and book flights to Washington from Philadelphia whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are Air Canada, Avianca, ANA, Copa Airlines, United Airlines, Ethiopian Airlines nonstop flights to Washington Dulles Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Philadelphia to Washington today, tomorrow, or this week.  

 

Save dollars with cheap flights from Philadelphia Intl., PHL to Washington Dulles Intl., IAD 

Sort your search results by price to find great deals on your flight from Philadelphia to Washington—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Washington from Philadelphia currently is just rising to .  

Here are more money-saving tips: 

  • Fly in when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Washington  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Washington from Philadelphia 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Washington with Expedia today.

Frequently asked questions

How much is a flight from Philadelphia Intl. Airport (PHL) to Washington Dulles Intl. Airport (IAD)?
If you're planning on travelling from Philadelphia Airport to Washington Dulles Intl. Airport (IAD), round-trip journeys start from . This figure is based on fares quoted within the last 7 days on Expedia for flights departing within the next year, so don't hang around. Book now and save yourself money and time. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Philadelphia Airport to Washington Dulles Intl. Airport (IAD)?
The majority of flights can be cancelled online, but every air carrier has its own terms and conditions. If you do decide to cancel your flight, go to our Customer Service Portal and follow the instructions.
How do I find cheap flights from PHL to Dulles Intl. Airport that have flexible change policies?
Flights from Philadelphia Airport to IAD with flexible change policies are available with many carriers. Simply use our "No change fees" filter while searching. You'll only need to pay the difference in ticket price, with no added fees to worry about.
How many hours is the flight from Philadelphia Intl. Airport (PHL) to Washington Dulles Intl. Airport (IAD)?
It only takes about 8 hours to journey from Philadelphia Airport to Dulles Intl. Airport — perfect for a nap. You'll be starting your descent into Chantilly by the time you wake up.
How far is the flight from Philadelphia Airport to Dulles Intl. Airport?
It's only 220 kilometres from Philadelphia Intl. Airport (PHL) to Washington Dulles Intl. Airport (IAD). It's quite possible that you'll spend more time travelling to and from the airport than you will actually flying!
Which airlines fly direct from PHL to Dulles Intl. Airport?
Flying straight from Philadelphia Airport to IAD is a breeze with United Airlines (UA). This leading airline offers 78 flights every month.
Are Philadelphia Intl. Airport (PHL) to Dulles Intl. Airport flight tickets cheaper when they're purchased at the last minute?
It is possible to score amazing last-minute deals from Philadelphia Airport to IAD, but it can also be hit-or-miss. As many airlines advertise prices up to 12 months in advance, it's worth keeping an eye on fares early and being ready to pounce when you spot a bargain. Expedia compares carrier prices and updates flight deals regularly, so you can be certain you're always getting the latest offers.

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