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CA $251 Cheap Flights from Washington (IAD) to Philadelphia (PHL)

View CA $251 flight on Sun, Oct 11, 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at CA $251 for one-way flights and CA $495 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, Dec 23 - Wed, Jan 6
IAD
Washington
PHL
Philadelphia
CA $495 Roundtrip, found 2 days ago
CA $495
Roundtrip
found 2 days ago
Select United flight, departing Wed, Dec 23 from Washington to Philadelphia, returning Wed, Jan 6, priced at CA $495 found 2 days ago
United
Wed, Dec 23 - Wed, Jan 6
IAD
Washington
PHL
Philadelphia
CA $514 Roundtrip, found 2 days ago
CA $514
Roundtrip
found 2 days ago
Select United flight, departing Wed, Dec 23 from Washington to Philadelphia, returning Wed, Jan 6, priced at CA $514 found 2 days ago
United
Wed, Dec 23 - Wed, Jan 6
IAD
Washington
PHL
Philadelphia
CA $518 Roundtrip, found 2 days ago
CA $518
Roundtrip
found 2 days ago
Select United flight, departing Wed, Dec 23 from Washington to Philadelphia, returning Wed, Jan 6, priced at CA $518 found 2 days ago
United
Wed, Dec 23 - Wed, Jan 6
IAD
Washington
PHL
Philadelphia
CA $522 Roundtrip, found 2 days ago
CA $522
Roundtrip
found 2 days ago
Select United flight, departing Wed, Dec 23 from Washington to Philadelphia, returning Wed, Jan 6, priced at CA $522 found 2 days ago
American Airlines
Sun, Oct 4 - Sun, Oct 11
IAD
Washington
PHL
Philadelphia
CA $531 Roundtrip, found 3 days ago
CA $531
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sun, Oct 4 from Washington to Philadelphia, returning Sun, Oct 11, priced at CA $531 found 3 days ago
United
Wed, Dec 23 - Wed, Jan 6
IAD
Washington
PHL
Philadelphia
CA $533 Roundtrip, found 2 days ago
CA $533
Roundtrip
found 2 days ago
Select United flight, departing Wed, Dec 23 from Washington to Philadelphia, returning Wed, Jan 6, priced at CA $533 found 2 days ago
United
Wed, Dec 23 - Wed, Jan 6
IAD
Washington
PHL
Philadelphia
CA $536 Roundtrip, found 2 days ago
CA $536
Roundtrip
found 2 days ago
Select United flight, departing Wed, Dec 23 from Washington to Philadelphia, returning Wed, Jan 6, priced at CA $536 found 2 days ago
United
Wed, Dec 23 - Wed, Jan 6
IAD
Washington
PHL
Philadelphia
CA $556 Roundtrip, found 2 days ago
CA $556
Roundtrip
found 2 days ago
Select United flight, departing Wed, Dec 23 from Washington to Philadelphia, returning Wed, Jan 6, priced at CA $556 found 2 days ago
American Airlines
Wed, Dec 23 - Wed, Jan 6
IAD
Washington
PHL
Philadelphia
CA $557 Roundtrip, found 2 days ago
CA $557
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Dec 23 from Washington to Philadelphia, returning Wed, Jan 6, priced at CA $557 found 2 days ago
Delta
Fri, Dec 18 - Sun, Dec 20
IAD
Washington
PHL
Philadelphia
CA $1,073 Roundtrip, found 1 day ago
CA $1,073
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Dec 18 from Washington to Philadelphia, returning Sun, Dec 20, priced at CA $1,073 found 1 day ago

Frequently asked questions

How much does a flight from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) cost?
You can find one-way and return flights from IAD to PHL with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when IAD to PHL ticket fares go up or down.
What is the cheapest month to fly from Washington, DC (IAD) to Philadelphia, PA (PHL)?
The cheapest months to fly from Washington, DC (IAD) to Philadelphia, PA (PHL) are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
Only one airline offers direct flights from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.). United operates 35 direct flights from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) every week.
How do I find cheap flights from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
To find a cheap flight from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
The best airline to fly with from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) will differ from traveler to traveler. If you like to fly early, United offers early morning flights. If price is the most important factor, United typically offers the lowest fares. Delta offers the most daily flights from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Washington, DC (IAD) to Philadelphia, PA (PHL)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
You'll find around 5 nonstop flights per day from Washington Dulles Intl. (IAD) to Philadelphia Intl. (PHL). For even more choices, look at flights that include layovers, as there are approximately 18 connecting flights per day. Some common connection points include Hartsfield-Jackson Atlanta Intl. (ATL), Charlotte-Douglas Intl. (CLT), and Detroit Metropolitan Wayne County (DTW).
What is the earliest flight from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
The earliest flight from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) typically departs around 5:00 AM. This flight is operated by American Airlines. This is a seasonal service, active only in February. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
You'll generally find the most flights from Washington Dulles Intl. (IAD) to Philadelphia Intl. (PHL) on a Tuesday, with around 24 flights available. This gives you a good selection of options for your travel plans. Major airlines on this route include Delta, United, and American Airlines. Flight schedules are fairly consistent throughout the week, so you'll have several flight options no matter which day you choose to fly.
What are the most popular departure times for flights from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
The most popular departure times for flights from Washington Dulles Intl. (IAD) to Philadelphia Intl. (PHL) are in the afternoon, from 12pm to 3pm. Many major carriers, including Delta, United and American Airlines, offer flights during this window. Many travelers prefer this time as it allows for a productive morning before heading to the airport, and you'll arrive in Philadelphia with plenty of time for afternoon activities or meetings.
How long does it take to fly from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
A nonstop flight from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) typically takes around 1 hour 18 minutes. This route covers a distance of approximately 216 kilometers. If you opt for a flight with one stop, your travel time will be significantly longer, usually around 5 hours 48 minutes. Flights with two or more stops can take even longer, averaging about 12 hours 48 minutes. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic.
Can you fly business or first class from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
You can fly business class or first class between IAD and PHL. First class cabins are available on Delta, United, and American Airlines.
How do I earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) flight with Expedia?
It's easy to earn miles on a Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Philadelphia, PA (PHL) from Washington, DC (IAD)?
If you're planning to travel to Philadelphia from Washington Dulles Intl. (IAD), you can fly directly into Philadelphia Intl. (PHL). Some flights may connect through major hubs like Charlotte-Douglas Intl. (CLT), DuBois Regional (DUJ), or Bradford Regional (BFD) before reaching Philadelphia. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) at the last minute?
Typically, booking a last minute flight from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) flight and hotel package?
Securing a Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.)?
If you booked your Washington, DC (IAD-Washington Dulles Intl.) to Philadelphia, PA (PHL-Philadelphia Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Philadelphia Intl.
Airlines serving
American Airlines, Delta
Roundtrip price
CA $495
Distance
214 km
Average flight time
1 hour 14 mins

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Chantilly to Philadelphia Flights

The easy way to book your flights from Washington to Philadelphia 

With Expedia, it’s simple to find and book flights to Philadelphia from Washington 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 nonstop flights to Philadelphia 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 Washington to Philadelphia today, tomorrow, or this week.  

 

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

Sort your search results by price to find great deals on your flight from Washington to Philadelphia—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Philadelphia from Washington currently is just CA $495 rising to CA $1,073.  

Here are more money-saving tips: 

  • Fly in December when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Philadelphia  
  • 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 Philadelphia from Washington 

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 Philadelphia with Expedia today.

Chantilly to Philadelphia Flights

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*Available to Expedia members.