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$79+ Cheap flights from Washington, D.C. (WAS) 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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — PHL
Aug 31 — Sep 71
Mon 8/31
Mon 9/7
1 adult, Economy
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Cheap flight deals from Washington, D.C. to Philadelphia

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

This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Wed 8/196:20 am
IAD
-
PHL
1 stop6h 06m
Frontier
Mon 8/244:45 pm
PHL
-
IAD
1 stop6h 07m
Frontier
Deal found 7/30$172
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/147:50 am
IAD
-
PHL
1 stop10h 24m
Frontier
Wed 9/168:41 am
PHL
-
IAD
1 stop8h 37m
Frontier
Deal found 7/29$177
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 9/297:50 am
IAD
-
PHL
1 stop10h 24m
Frontier
Mon 10/58:41 am
PHL
-
IAD
1 stop8h 37m
Frontier
Deal found 7/31$179
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Sun 8/308:39 pm
IAD
-
PHL
1 stop10h 36m
Frontier
Sun 9/62:45 pm
PHL
-
IAD
1 stop8h 07m
Frontier
Deal found 7/30$184
This Kiwi.com deal was found by Cheapflights users on 7/27. 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.
Wed 9/96:13 pm
IAD
-
PHL
1 stop29h 29m
Frontier
Wed 9/165:32 pm
PHL
-
IAD
1 stop6h 38m
Frontier
Deal found 7/27$185
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 9/2910:22 am
BWI
-
PHL
1 stop7h 52m
Frontier
Fri 10/212:40 pm
PHL
-
BWI
1 stop10h 24m
Frontier
Deal found 7/31$186
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Wed 8/198:39 pm
IAD
-
PHL
1 stop10h 36m
Frontier
Wed 8/264:45 pm
PHL
-
IAD
1 stop6h 07m
Frontier
Deal found 7/30$186
This Kiwi.com deal was found by Cheapflights users on 7/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/149:25 pm
BWI
-
PHL
1 stop9h 51m
Frontier
Wed 9/168:41 am
PHL
-
BWI
1 stop8h 05m
Frontier
Deal found 7/29$187
This Kiwi.com deal was found by Cheapflights users on 7/30. 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 9/297:50 am
IAD
-
PHL
1 stop10h 24m
Frontier
Wed 9/3012:40 pm
PHL
-
IAD
1 stop11h 30m
Frontier
Deal found 7/30$188
This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
Thu 8/208:39 pm
IAD
-
PHL
1 stop10h 36m
Frontier
Fri 9/42:45 pm
PHL
-
IAD
1 stop26h 29m
Frontier
Deal found 7/31$189
This Kiwi.com deal was found by Cheapflights users on 7/31. 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 9/297:50 am
IAD
-
PHL
1 stop10h 24m
Frontier
Sat 10/35:32 pm
PHL
-
IAD
1 stop6h 38m
Frontier
Deal found 7/31$190
This Kiwi.com deal was found by Cheapflights users on 7/31. 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.
Wed 9/303:10 pm
BWI
-
PHL
1 stop8h 59m
Frontier
Fri 10/25:32 pm
PHL
-
BWI
1 stop5h 32m
Frontier
Deal found 7/31$191

Find flight deals from Washington, D.C. to Philadelphia

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) 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 August 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$172
(Kiwi.com)

One-way from

$79
(Kiwi.com)

Popular in

March

Cheapest in

December

Good round-trip deal

$333 or less

Good one-way deal

$268 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Philadelphia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Philadelphia flights.
Search Deals
From Washington, D.C. (WAS) to Philadelphia
Search Deals
One-way flight from Washington, D.C. (WAS) to Philadelphia
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($99 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Price to beat on a round-trip flight from Washington, D.C. (WAS) to Philadelphia.
Search Deals
Price to beat on a one-way flight from Washington, D.C. (WAS) to Philadelphia.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington, D.C. 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 August 1, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Philadelphia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BaltimorePhiladelphia

BWI - PHL

BWIPHL

Baltimore/Washington

Tue 9/29

10:22 am-6:14 pm

1 stop7h 52m

Philadelphia

Mon 10/5

8:41 am-4:46 pm

1 stop8h 05m

$186

BaltimorePhiladelphia

BWI - PHL

BWIPHL

Baltimore/Washington

Wed 9/30

3:10 pm-12:09 am

1 stop8h 59m

Philadelphia

Fri 10/2

5:32 pm-11:04 pm

1 stop5h 32m

$191

BaltimorePhiladelphia

BWI - PHL

BWIPHL

Baltimore/Washington

Fri 8/21

6:45 am-8:28 pm

1 stop13h 43m

Philadelphia

Sun 8/23

4:45 pm-7:26 am

1 stop14h 41m

$195

BaltimorePhiladelphia

BWI - PHL

BWIPHL

Baltimore/Washington

Sat 9/12

10:22 am-6:14 pm

1 stop7h 52m

Philadelphia

Sat 9/19

5:32 pm-9:25 am

1 stop15h 53m

$202

BaltimorePhiladelphia

BWI - PHL

BWIPHL

Baltimore/Washington

Thu 8/20

11:09 am-11:59 pm

1 stop12h 50m

Philadelphia

Sun 8/23

6:30 am-7:26 am

1 stop24h 56m

$204

BaltimorePhiladelphia

BWI - PHL

BWIPHL

Baltimore/Washington

Mon 8/24

9:32 pm-7:15 am

1 stop9h 43m

Philadelphia

Tue 8/25

4:45 pm-7:26 am

1 stop14h 41m

$212

BaltimorePhiladelphia

BWI - PHL

BWIPHL

Baltimore/Washington

Thu 9/10

10:22 am-11:18 pm

1 stop12h 56m

Philadelphia

Thu 9/17

8:41 am-4:46 pm

1 stop8h 05m

$220

Washington, D.C.Philadelphia

DCA - PHL

DCAPHL

Washington, D.C. Reagan-National

Sat 8/29

3:09 pm-10:29 pm

1 stop7h 20m

Philadelphia

Sat 9/5

8:00 am-2:13 pm

1 stop6h 13m

$241

Washington, D.C.Philadelphia

DCA - PHL

DCAPHL

Washington, D.C. Reagan-National

Thu 9/10

11:00 am-5:48 pm

1 stop6h 48m

Philadelphia

Thu 9/17

1:55 pm-9:07 pm

1 stop7h 12m

$241

Washington, D.C.Philadelphia

DCA - PHL

DCAPHL

Washington, D.C. Reagan-National

Tue 10/6

12:25 pm-5:49 pm

1 stop5h 24m

Philadelphia

Wed 10/7

10:42 am-3:59 pm

1 stop5h 17m

$241

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/1

Showing 1-10 of 60 resultsSorted by cheapest first
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Compare providers for flights from Washington, D.C. 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 Washington, D.C. to Philadelphia in August.
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.-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.-Philadelphia flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Philadelphia flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C.-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.-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 Washington, D.C. to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Washington, D.C. 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. to Philadelphia

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

Currently, November is the cheapest month in which you can book a flight from Washington, D.C. to Philadelphia (average of $184). Flying from Washington, D.C. to Philadelphia in March is currently the most expensive (average of $614). 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 WAS to PHL?

Find hourly flight availability from Washington, D.C. 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 August 1, 2026.

When flying from Washington, D.C. to Philadelphia, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 32% versus a flight in the afternoon.

Weekly flight availability from Washington, D.C. to Philadelphia

Explore weekly flight availability from Washington, D.C. to Philadelphia. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated August 1, 2026.

The most flights from WAS to PHL are scheduled on a Friday (17 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 on average).

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

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Philadelphia. Price data was last updated on July 25, 2026.

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

The best insider tips for Washington, D.C. 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. 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 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 August 1, 2026.
See what other customers who have flown with United Airlines and American Airlines from Washington, D.C. to Philadelphia have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,062 reviews

Overall

7.4

Entertainment

7.1

Boarding

7.7

Crew

8.1

Comfort

7.3

Food

6.7

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
10,062 reviews
United Airlines
7.4
Good
10,062 reviews

Overall

7.4

Entertainment

7.1

Boarding

7.7

Crew

8.1

Comfort

7.3

Food

6.7

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.
American Airlines
7.1
Good
11,845 reviews
United Airlines
7.4
Good
10,062 reviews

Overall

7.4

Entertainment

7.1

Boarding

7.7

Crew

8.1

Comfort

7.3

Food

6.7

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

Find useful and relevant information for your journey from Washington, D.C. 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.?

    Philadelphia (PHL), located 7.0 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. to Philadelphia. 2 airlines have flights to Philadelphia from Washington, D.C. on a regular basis. Booking flights from Washington, D.C. to Philadelphia should not be difficult; the airport handles an average of 11 inbound flights from Washington, D.C. per day.

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

    For as low as $249, Frontier can have you in Philadelphia from Washington, D.C. in 1h 13m. The distance between Washington, D.C. and Philadelphia is about 134 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Washington, D.C. to Philadelphia round-trip?

    Cheapflights users have booked flights from Washington, D.C. to Philadelphia round-trip from $179. Another airline that can offer you cheap pricing is United Airlines. These flights start at 55% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Washington, D.C. to Philadelphia one-way?

    The cheapest airline one-way is JetBlue, with whom users have recently found tickets for as low as $88. However, be on the lookout for offers from American Airlines and United Airlines, as they are both options that can get you from Washington, D.C. to Philadelphia for a low price.

  • What are the most popular routes from Washington, D.C. to Philadelphia?

    While some choose either Washington, D.C. Dulles Intl - Philadelphia or Baltimore/Washington - Philadelphia, Washington, D.C. Reagan-National - Philadelphia is the most popular route from Washington, D.C. to Philadelphia.

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

    No one likes to see their flight delayed. When booking a flight from Washington, D.C. to Philadelphia consider choosing Mesa Airlines (94%), ANA (87%) or Air China (80%) as they are the most reliable in getting you off to your destination on time.

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

    On average you can expect to pay $426 for a flight from Washington, D.C. to Philadelphia. The cheapest flight overall is $233 while the most popular route, (Washington, D.C. Reagan-National - Philadelphia) is currently priced at $241.

  • Can I find deals for flights from Washington, D.C. to Philadelphia that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to Philadelphia flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to Philadelphia?

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

  • Can I find deals for business class flights from Washington, D.C. to Philadelphia?

    Yes. Cheapflights offers flight deals from Washington, D.C. 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. to Philadelphia?

    Currently, November is the cheapest month in which you can book a flight from Washington, D.C. to Philadelphia (average of $184). Flying from Washington, D.C. to Philadelphia in March is currently the most expensive (average of $614). 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
Ocean City
Cherry Hill
Lewes
Plymouth Meeting
Wyomissing
Wildwood Crest
Pottstown
Ephrata
Milford
Dover
Elkton
Essington
Willow Grove
New Castle
Millville
Vineland

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Washington, D.C. to Philadelphia

Discover the top 2 airlines that operate flights from Washington, D.C. 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 August 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$179Average$309FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$194Average$458FlexibilityNo cancel feeOn-time69%

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