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Philadelphia

$84+ Cheap flights from Dulles Intl (IAD) to Philadelphia (PHL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/20. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — PHL
Jan 31 — Feb 71
Sat 1/31
Sat 2/7
1 adult, Economy
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Cheap flight deals from Dulles Intl to Philadelphia

Cheapest flights from Dulles Intl to Philadelphia
Explore the most affordable flight options available from Dulles Intl to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 1, 2026.

This United Airlines deal was found by Cheapflights users on 12/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3112:55 pmIAD - PHL
Nonstop1h 12mUnited Airlines
Wed 1/710:30 amPHL - IAD
Nonstop1h 17mUnited Airlines
Deal found 12/30$289
This American Airlines deal was found by Cheapflights users on 12/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/311:57 pmIAD - PHL
1 stop4h 01mAmerican Airlines
Wed 1/710:25 amPHL - IAD
1 stop6h 51mAmerican Airlines
Deal found 12/30$309
This United Airlines deal was found by Cheapflights users on 12/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3010:20 pmIAD - PHL
Nonstop1h 10mUnited Airlines
Tue 2/33:01 pmPHL - IAD
Nonstop1h 17mUnited Airlines
Deal found 12/30$409
This Kiwi.com deal was found by Cheapflights users on 12/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/308:15 pmIAD - PHL
1 stop32h 49mMultiple Airlines
Tue 2/311:00 amPHL - IAD
2 stops50h 25mMultiple Airlines
Deal found 12/30$430
This American Airlines deal was found by Cheapflights users on 12/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:35 amIAD - PHL
1 stop6h 06mAmerican Airlines
Wed 12/315:57 pmPHL - IAD
1 stop3h 53mAmerican Airlines
Deal found 12/29$537
This United Airlines deal was found by Cheapflights users on 12/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:40 amIAD - PHL
Nonstop1h 15mUnited Airlines
Wed 12/312:50 pmPHL - IAD
Nonstop1h 15mUnited Airlines
Deal found 12/29$551
This Mytrip deal was found by Cheapflights users on 12/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:40 pmIAD - PHL
3 stops29h 37mMultiple Airlines
Wed 1/78:54 pmPHL - IAD
2 stops18h 29mMultiple Airlines
Deal found 12/30$748

Find flight deals from Dulles Intl to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Philadelphia (PHL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 1, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$133
(Kiwi.com)

One-way from

$84
(Kiwi.com)

Popular in

August

Cheapest in

June

Average price

$437

Good round-trip deal

$289 or less
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Philadelphia flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Philadelphia flights.
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From Washington, D.C. Dulles Intl to Philadelphia
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One-way flight from Washington, D.C. Dulles Intl to Philadelphia
Search Deals
Highest demand for flights based on searches. 31% potential increase in price ($170 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($21 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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Price to beat on a round-trip flight from Washington, D.C. Dulles Intl to Philadelphia.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Philadelphia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 1, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Philadelphia that are best for you.

Fly from

Dulles Intl

Fly to

Philadelphia

Route

Depart

Return

Price

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Mon 1/19

10:08 pm-11:14 am

1 stop13h 06m

Philadelphia

Wed 1/21

5:07 pm-10:42 am

1 stop17h 35m

$133

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Fri 2/27

10:23 am-10:42 am

1 stop24h 19m

Philadelphia

Sun 3/1

10:59 pm-7:20 am

1 stop8h 21m

$175

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Wed 4/22

8:38 am-9:58 am

Nonstop1h 20m

Philadelphia

Mon 5/4

7:45 pm-8:55 pm

Nonstop1h 10m

$179

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Wed 1/28

8:20 am-9:37 am

Nonstop1h 17m

Philadelphia

Wed 2/4

10:40 am-11:55 am

Nonstop1h 15m

$179

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Thu 1/22

5:37 pm-12:52 am

1 stop7h 15m

Philadelphia

Sun 1/25

10:45 pm-2:18 pm

2 stops15h 33m

$192

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Fri 2/27

8:31 am-9:48 am

Nonstop1h 17m

Philadelphia

Sun 3/1

10:35 am-11:49 am

Nonstop1h 14m

$194

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Fri 1/23

8:53 pm-3:17 pm

1 stop18h 24m

Philadelphia

Mon 1/26

5:30 am-2:18 pm

2 stops8h 48m

$197

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Thu 1/29

5:37 pm-7:05 pm

2 stops25h 28m

Philadelphia

Thu 2/5

9:02 pm-8:40 am

1 stop11h 38m

$197

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Thu 1/15

12:55 pm-2:10 pm

Nonstop1h 15m

Philadelphia

Mon 1/19

10:30 am-11:47 am

Nonstop1h 17m

$209

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Fri 1/16

2:58 pm-1:01 am

2 stops10h 03m

Philadelphia

Sun 1/18

5:10 am-2:15 pm

1 stop9h 05m

$212

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/30

Showing 1-10 of 17 results
1
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Compare providers for flights from Dulles Intl to Philadelphia

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Philadelphia in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Philadelphia flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C. Dulles Intl Airport-Philadelphia flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Philadelphia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Philadelphia flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Philadelphia flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Dulles Intl to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Dulles Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Philadelphia

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Philadelphia?

Currently, April is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Philadelphia (average of $67). Flying from Washington, D.C. Dulles Intl Airport to Philadelphia in July is currently the most expensive (average of $139). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IAD to PHL?

Find hourly flight availability from Dulles Intl to Philadelphia. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 1, 2026.

One of the essential ways to save on airfare from Washington, D.C. Dulles Intl Airport to Philadelphia is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight at noon could potentially save you up to 46% on airfare.

The best insider tips for Washington, D.C. Dulles Intl Airport to Philadelphia flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. Dulles Intl Airport to Philadelphia trip
Airports
IAD

For a smooth departure, use the Aerotrain to reach distant gates quickly. Pay attention to signage as it's not a loop system.

Read more about IADBy Ramsey Qubein
PHL

To reach downtown, SEPTA trains are efficient. Stations are near Terminals A, B, C/D, and E/F, with service from 5 a.m. to midnight.

Read more about PHLBy Mark Chesnut
Our travel experts
Mark Chesnut

Mark Chesnut

Expert on PHL

Mark Chesnut

Mark Chesnut

Mark Chesnut is a travel writer and public speaker with more than 30 years of experience. The 2019 winner of the NLGJA Excellence in Travel Writing Award, Mark is the author of the book “Prepare for Departure” and has covered air travel for multiple top consumer and trade media outlets.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on IAD

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Reviews of airlines servicing Philadelphia

Get insights into the airlines that provide service to Philadelphia. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Philadelphia. Reviews last updated January 1, 2026.
Get a feel of what it's like to fly with United Airlines from Washington, D.C. Dulles Intl Airport to Philadelphia by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,129 reviews

Food

6.6

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
United Airlines
7.4
Good
9,129 reviews
United Airlines
7.4
Good
9,129 reviews

Food

6.6

Comfort

7.3

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Philadelphia. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Philadelphia from Washington, D.C. Dulles Intl?

    Philadelphia (PHL), located 7.0 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. Dulles Intl to Philadelphia. 1 airline have flights to Philadelphia from Washington, D.C. Dulles Intl on a regular basis. Booking flights from Washington, D.C. Dulles Intl to Philadelphia should not be difficult; the airport handles an average of 5 inbound flights from Washington, D.C. Dulles Intl per day.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Philadelphia?

    A quick flight from Washington, D.C. Dulles Intl Airport to Philadelphia can take about 1h 20m. Frontier provides one of the quickest options available for as low as $179. The distance between Washington, D.C. Dulles Intl Airport and Philadelphia is about 134 mi. This flight may include one or multiple stops.

  • What is the cheapest airline to fly from Washington, D.C. Dulles Intl Airport to Philadelphia round-trip?

    United Airlines, at $179, was found to be the cheapest airline from Washington, D.C. Dulles Intl Airport to Philadelphia.. Users have found that United Airlines is 50% cheaper than the other options available to this destination.

  • What are the most reliable airlines from Washington, D.C. Dulles Intl Airport to Philadelphia?

    The top 3 most reliable airlines when flying from Washington, D.C. Dulles Intl Airport to Philadelphia are CommutAir (100%), Mesa Airlines (100%) and Air Canada (92%).

  • What are the cheapest flights from Washington, D.C. Dulles Intl Airport to Philadelphia?

    The cheapest flight price from Washington, D.C. Dulles Intl Airport to Philadelphia is $179. On average you can expect to pay $334. The most popular route, (Washington, D.C. Dulles Intl - Philadelphia), can usually be booked for $179.

  • Can I find deals for flights from Dulles Intl to Philadelphia that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Philadelphia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Philadelphia?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Philadelphia.

  • Can I find deals for business class flights from Dulles Intl to Philadelphia?

    Yes. Cheapflights offers flight deals from Dulles Intl to Philadelphia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Philadelphia?

    Currently, April is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Philadelphia (average of $67). Flying from Washington, D.C. Dulles Intl Airport to Philadelphia in July is currently the most expensive (average of $139). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Wildwood
Pottstown
King of Prussia
Reading
Ocean City
Cherry Hill
Lewes
Dewey Beach
Ephrata
Camden
Vineland
Milford
Dover
Elkton
Essington
Willow Grove
New Castle
Millville
Newark
Chester

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Alternative routes for Dulles Intl to Philadelphia

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to John F Kennedy Intl flights
Reagan-National to LaGuardia flights
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Baltimore to Latrobe flights
Dulles Intl to Elmira flights
Reagan-National to Williamsport flights
Baltimore to Altoona flights
Baltimore to Williamsport flights
Baltimore to Hagerstown flights

Top airline flying from Dulles Intl to Philadelphia

Discover the top airline that operate flights from Dulles Intl to Philadelphia. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$179Average$410FlexibilityNo cancel feeOn-time69%

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