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Philadelphia

$102+ Cheap flights from Dulles Intl (IAD) to Philadelphia (PHL)

IAD — PHL
Oct 9 — Oct 161
Fri 10/9
Fri 10/16
1 adult, Economy
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Cheap flight deals from Dulles Intl to Philadelphia

Cheapest flights from Dulles Intl to Philadelphia

Tue 10/67:50 am -
1 stop10h 24m
Tue 10/138:30 am -
1 stop15h 51m
Deal found 9/8$127
Sat 10/317:52 am -
1 stop15h 14m
Tue 11/35:22 pm -
1 stop6h 21m
Deal found 9/7$171
Sat 11/149:06 pm -
1 stop10h 05m
Mon 11/165:22 pm -
1 stop6h 21m
Deal found 9/9$187
Wed 10/217:50 am -
1 stop10h 25m
Wed 10/285:22 pm -
1 stop6h 21m
Deal found 9/6$196
Thu 10/227:54 am -
1 stop15h 49m
Thu 10/298:30 am -
1 stop8h 42m
Deal found 9/7$208
Fri 10/211:12 am -
1 stop12h 57m
Sat 10/35:32 pm -
1 stop6h 38m
Deal found 9/5$212
Sat 9/267:50 am -
1 stop15h 28m
Mon 9/2812:40 pm -
1 stop11h 30m
Deal found 9/5$214
Mon 10/129:06 pm -
1 stop10h 15m
Fri 10/235:22 pm -
1 stop23h 51m
Deal found 9/9$216
Sat 11/79:06 pm -
1 stop10h 05m
Tue 11/105:22 pm -
1 stop6h 21m
Deal found 9/8$227

Find flight deals from Dulles Intl to Philadelphia

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$127
(Kiwi.com)

One-way from

$102
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$379

Good round-trip deal

$267 or less

Good one-way deal

$151 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
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High demand for flights, 5% potential price rise
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Cheapest flight prices on average. 4% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in September 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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Price to beat on a one-way flight from Washington, D.C. Dulles Intl to Philadelphia.
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Cheapflights Fare Finder

 
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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Philadelphia

IAD Washington, D.C. Dulles Intl - PHL Philadelphia

IADPHL

Washington, D.C. Dulles Intl

Tue 9/29

7:50 am-7:16 am

1 stop23h 26m

Philadelphia

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$102

Washington, D.C.Philadelphia

IAD Washington, D.C. Dulles Intl - PHL Philadelphia

IADPHL

Washington, D.C. Dulles Intl

Sun 10/18

7:50 am-7:21 am

1 stop23h 31m

Philadelphia

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$129

Washington, D.C.Philadelphia

IAD Washington, D.C. Dulles Intl - PHL Philadelphia

IADPHL

Washington, D.C. Dulles Intl

Fri 10/9

9:06 pm-11:11 pm

1 stop26h 05m

Philadelphia

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$143

Washington, D.C.Philadelphia

IAD Washington, D.C. Dulles Intl - PHL Philadelphia

IADPHL

Washington, D.C. Dulles Intl

Sun 10/18

10:16 pm-11:30 pm

Nonstop1h 14m

Philadelphia

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$162

Washington, D.C.Philadelphia

IAD Washington, D.C. Dulles Intl - PHL Philadelphia

IADPHL

Washington, D.C. Dulles Intl

Fri 10/9

8:30 am-9:43 am

Nonstop1h 13m

Philadelphia

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$172
Quickest round-trip

Washington, D.C.Philadelphia

IAD Washington, D.C. Dulles Intl - PHL Philadelphia

IADPHL

Washington, D.C. Dulles Intl

Tue 9/29

8:30 am-9:42 am

Nonstop1h 12m

Philadelphia

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$172

Washington, D.C.Philadelphia

IAD Washington, D.C. Dulles Intl - PHL Philadelphia

IADPHL

Washington, D.C. Dulles Intl

Fri 9/25

8:30 am-9:43 am

Nonstop1h 13m

Philadelphia

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$204

Washington, D.C.Philadelphia

IAD Washington, D.C. Dulles Intl - PHL Philadelphia

IADPHL

Washington, D.C. Dulles Intl

Wed 10/7

1:05 pm-2:20 pm

Nonstop1h 15m

Philadelphia

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$207

Washington, D.C.Philadelphia

IAD Washington, D.C. Dulles Intl - PHL Philadelphia

IADPHL

Washington, D.C. Dulles Intl

Fri 9/25

6:14 am-10:05 am

1 stop3h 51m

Philadelphia

Wed 12/31

12:00 am-12:00 am

Nonstop0h 00m

$214

Washington, D.C.Philadelphia

IAD Washington, D.C. Dulles Intl - PHL Philadelphia

IADPHL

Washington, D.C. Dulles Intl

Sat 11/7

9:06 pm-7:11 am

1 stop10h 05m

Philadelphia

Tue 11/10

5:22 pm-11:43 pm

1 stop6h 21m

$227

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/7

Showing 1-10 of 20 resultsSorted by cheapest first
1
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Compare providers for flights from Dulles Intl to Philadelphia

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 September.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C. Dulles Intl Airport-Philadelphia flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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

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, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Philadelphia (average of $184). Flying from Washington, D.C. Dulles Intl Airport to Philadelphia in June is currently the most expensive (average of $610). 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?

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 afternoon tend to be the most expensive. A flight at noon could potentially save you up to 38% on airfare.

What is the cheapest day to fly from Washington, D.C. Dulles Intl Airport to Philadelphia?

Travelers seeking maximum savings on their Washington, D.C. Dulles Intl Airport to Philadelphia flight should consider departing on Thursday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Philadelphia?

Airfare is below average for this route at the moment.

Washington, D.C. Dulles Intl Airport to Philadelphia flights typically cost between $249 and $587 in October.
The cheapest round-trip price found within the last 5 days was $127 on Frontier (Oct 6-Oct 13).

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

Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. Dulles Intl Airport to Philadelphia trip
Our travel experts
Mark Chesnut

Mark Chesnut

Expert on PHL

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

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 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
10,188 reviews

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
United Airlines
7.4
Good
10,188 reviews
United Airlines
7.4
Good
10,188 reviews

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.

Related info for your journey

  • 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 9 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 13m. Frontier provides one of the quickest options available for as low as $269. 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 $189, was found to be the cheapest airline from Washington, D.C. Dulles Intl Airport to Philadelphia.. Users have found that United Airlines is 55% 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 Mesa Airlines (82%), ANA (80%) and Ethiopian Air (77%).

  • 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 $133. On average you can expect to pay $469. The most popular route, (Washington, D.C. Dulles Intl - Philadelphia), can usually be booked for $269.

  • 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, November is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Philadelphia (average of $184). Flying from Washington, D.C. Dulles Intl Airport to Philadelphia in June is currently the most expensive (average of $610). 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
Reading
King of Prussia
Camden
Wildwood Crest
Cherry Hill
Ocean City
Lewes
Plymouth Meeting
Wyomissing
Pottstown
Ephrata
Milford
Dover
Elkton
Essington
Willow Grove
New Castle
Vineland
Millville

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Dulles Intl to Philadelphia

AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$189Average$458FlexibilityNo cancel feeOn-time69%

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