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$78+ 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 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — PHL
Nov 13 — Nov 201
Thu 11/13
Thu 11/20
1 adult, Economy
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Cheap 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 October 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$149
(Kiwi.com)

One-way from

$78
(Kiwi.com)

Popular in

June

Cheapest in

April

Average price

$407

Good round-trip deal

$356 or less

Good one-way deal

$203 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Philadelphia flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Philadelphia flights.
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From Washington, D.C. (WAS) to Philadelphia
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One-way flight from Washington, D.C. (WAS) to Philadelphia
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($50 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Washington, D.C. (WAS) to Philadelphia.
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Price to beat on a one-way flight from Washington, D.C. (WAS) to Philadelphia.
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Find 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 October 14, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/12. 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 11/118:40 amIAD - PHL
1 stop7h 10mFrontier
Wed 11/129:30 pmPHL - IAD
1 stop19h 04mFrontier
Deal found 10/12$149
This Kiwi.com deal was found by Cheapflights users on 10/14. 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 11/124:52 pmBWI - PHL
1 stop15h 43mMultiple Airlines
Thu 11/1310:32 pmPHL - BWI
1 stop10h 02mMultiple Airlines
Deal found 10/14$151
This Kiwi.com deal was found by Cheapflights users on 10/12. 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 11/1110:00 amBWI - PHL
1 stop5h 50mFrontier
Wed 11/129:30 pmPHL - BWI
1 stop10h 48mFrontier
Deal found 10/12$167
This Kiwi.com deal was found by Cheapflights users on 10/13. 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 10/265:37 pmBWI - PHL
1 stop17h 01mMultiple Airlines
Mon 10/279:53 pmPHL - BWI
1 stop12h 27mMultiple Airlines
Deal found 10/13$169
This Kiwi.com deal was found by Cheapflights users on 10/13. 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.
Sat 10/254:22 pmIAD - PHL
1 stop7h 35mFrontier
Tue 10/289:30 pmPHL - IAD
1 stop22h 50mFrontier
Deal found 10/13$170
This Kiwi.com deal was found by Cheapflights users on 10/13. 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 11/276:38 pmBWI - PHL
1 stop14h 42mMultiple Airlines
Thu 12/410:22 amPHL - BWI
1 stop21h 46mMultiple Airlines
Deal found 10/13$174
This Kiwi.com deal was found by Cheapflights users on 10/12. 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 11/1110:00 amBWI - PHL
2 stops13h 26mMultiple Airlines
Wed 11/129:30 pmPHL - BWI
1 stop10h 48mMultiple Airlines
Deal found 10/12$175
This American Airlines deal was found by Cheapflights users on 10/13. 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.
Thu 11/61:44 pmDCA - PHL
Nonstop1h 09mAmerican Airlines
Mon 11/107:50 pmPHL - DCA
Nonstop1h 08mAmerican Airlines
Deal found 10/13$179
This United Airlines deal was found by Cheapflights users on 10/14. 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.
Sat 12/2710:20 pmIAD - PHL
Nonstop1h 10mUnited Airlines
Mon 12/296:00 amPHL - IAD
Nonstop1h 15mUnited Airlines
Deal found 10/14$179
This American Airlines deal was found by Cheapflights users on 10/13. 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.
Thu 11/278:19 amDCA - PHL
Nonstop1h 05mAmerican Airlines
Thu 12/47:49 pmPHL - DCA
Nonstop1h 09mAmerican Airlines
Deal found 10/13$180
This Kiwi.com deal was found by Cheapflights users on 10/12. 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.
Fri 12/510:40 amBWI - PHL
1 stop13h 58mMultiple Airlines
Sun 12/710:22 amPHL - BWI
1 stop21h 46mMultiple Airlines
Deal found 10/12$181
This Kiwi.com deal was found by Cheapflights users on 10/14. 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 11/128:40 amIAD - PHL
1 stop7h 10mFrontier
Thu 11/136:24 pmPHL - IAD
1 stop19h 54mFrontier
Deal found 10/14$181

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 October 14, 2025.
Use the filters below to find and compare flights from Washington, D.C. to Philadelphia that are best for you.

Fly from

Washington, D.C.

Fly to

Philadelphia

Route

Depart

Return

Price

BaltimorePhiladelphia

BWI - PHL

BWIPHL

Baltimore/Washington

Wed 11/12

4:52 pm-8:35 am

1 stop15h 43m

Philadelphia

Thu 11/13

10:32 pm-8:34 am

1 stop10h 02m

$151

BaltimorePhiladelphia

BWI - PHL

BWIPHL

Baltimore/Washington

Tue 11/11

10:00 am-3:50 pm

1 stop5h 50m

Philadelphia

Wed 11/12

9:30 pm-8:18 am

1 stop10h 48m

$167

BaltimorePhiladelphia

BWI - PHL

BWIPHL

Baltimore/Washington

Thu 11/27

6:38 pm-9:20 am

1 stop14h 42m

Philadelphia

Thu 12/4

10:22 am-8:08 am

1 stop21h 46m

$174

BaltimorePhiladelphia

BWI - PHL

BWIPHL

Baltimore/Washington

Tue 11/11

10:00 am-11:26 pm

2 stops13h 26m

Philadelphia

Wed 11/12

9:30 pm-8:18 am

1 stop10h 48m

$175

Washington, D.C.Philadelphia

DCA - PHL

DCAPHL

Washington, D.C. Reagan-National

Thu 11/6

1:44 pm-2:53 pm

Nonstop1h 09m

Philadelphia

Mon 11/10

7:50 pm-8:58 pm

Nonstop1h 08m

$179

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Sat 12/27

12:55 pm-2:07 pm

Nonstop1h 12m

Philadelphia

Fri 1/2

10:39 am-11:55 am

Nonstop1h 16m

$179

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Sat 12/27

10:20 pm-11:30 pm

Nonstop1h 10m

Philadelphia

Mon 12/29

6:00 am-7:15 am

Nonstop1h 15m

$179

Washington, D.C.Philadelphia

DCA - PHL

DCAPHL

Washington, D.C. Reagan-National

Thu 11/27

8:19 am-9:24 am

Nonstop1h 05m

Philadelphia

Thu 12/4

7:49 pm-8:58 pm

Nonstop1h 09m

$180

BaltimorePhiladelphia

BWI - PHL

BWIPHL

Baltimore/Washington

Thu 11/27

6:38 pm-9:20 am

1 stop14h 42m

Philadelphia

Thu 12/4

9:09 pm-9:35 am

1 stop12h 26m

$188

BaltimorePhiladelphia

BWI - PHL

BWIPHL

Baltimore/Washington

Wed 11/12

6:20 am-2:15 pm

1 stop7h 55m

Philadelphia

Thu 11/13

8:51 pm-10:38 am

1 stop13h 47m

$189

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/13

Showing 1-10 of 55 results
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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 October.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy2 starsTrust Score*3 stars
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.-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, April is the cheapest month in which you can book a flight from Washington, D.C. to Philadelphia (average of $54). Flying from Washington, D.C. to Philadelphia in January is currently the most expensive (average of $148). 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 October 14, 2025.

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 at noon, which can drop the price by up to 48% versus a flight in the evening.

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 December 16, 2024.

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

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 October 14, 2025.

The most flights from WAS to PHL are scheduled on a Monday (16 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (13 on average).

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

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

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Washington, D.C. to Philadelphia trip
Airports
IAD

For a smooth departure from IAD, use the Aerotrain to quickly reach distant gates, avoiding long walks.

Read more about IADby Ramsey Qubein
PHL

Upon arrival at PHL, take the SEPTA Airport Line for a quick trip to Center City Philadelphia.

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 October 14, 2025.
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
8,976 reviews

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
United Airlines
7.4
Good
8,976 reviews
United Airlines
7.4
Good
8,976 reviews

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.
American Airlines
7.2
Good
11,042 reviews
United Airlines
7.4
Good
8,976 reviews

Entertainment

7.1

Overall

7.4

Crew

8.1

Food

6.6

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Tim,Sep 2025

IAD - GSP

This was pretty bad. It’s chaos at the Dulles boarding gates for the small regional jets because they use one gate to board 3-4 flights at a time. So, it’s difficult knowing where and when to go. There is little space for any size of carrry-on, so most had to gate check their bags. However, the worst of it was that our single flight attendant fell asleep before we took off and the pilot couldn’t do so until she responded to his messages. My wife had to wake her up! So we were a little late leaving. Not to be thwarted, the flight attendant fell asleep right after take off and there was no sight of her during the flight. When the aircraft touched down, a tray of unsecured canned drinks came crashing onto the aisle up front. I can only assume someone didn’t do what they were supposed to. The pilot was great, but I’m sure he must not be happy with this crew member.

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 15 inbound flights from Washington, D.C. per day.

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

    For as low as $179, Frontier can have you in Philadelphia from Washington, D.C. in 1h 09m. The distance between Washington, D.C. and Philadelphia is about 119 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 45% 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 Frontier, with whom users have recently found tickets for as low as $89. However, be on the lookout for offers from Spirit Airlines and JetBlue, 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 CommutAir (100%), Ethiopian Air (100%) or Air Canada (85%) 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 $587 for a flight from Washington, D.C. to Philadelphia. The cheapest flight overall is $189 while the most popular route, (Washington, D.C. Reagan-National - Philadelphia) is currently priced at $189.

  • 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, April is the cheapest month in which you can book a flight from Washington, D.C. to Philadelphia (average of $54). Flying from Washington, D.C. to Philadelphia in January is currently the most expensive (average of $148). 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
King of Prussia
Pottstown
Reading
Ocean City
Cherry Hill
Dewey Beach
Ephrata
Camden
Vineland
Dover
Elkton
Essington
Willow Grove
Newark
Millville
Chester
Exton
Havre de Grace
Plymouth Meeting

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Alternative routes for Washington, D.C. 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 John F Kennedy Intl flights
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Reagan-National to Allentown flights
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Reagan-National to Erie flights
Reagan-National to Harrisburg flights
Dulles Intl to Elmira flights
Reagan-National to Elmira flights
Reagan-National to Williamsport flights

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 October 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$179Average$349FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$179Average$391FlexibilityNo cancel feeOn-time69%

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