Philadelphia

$87+ 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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — PHL
Sep 5 — Sep 121
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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 August 31, 2025.

Round-trip from

$153
(Frontier)

One-way from

$87
(Kiwi.com)

Popular in

August

Cheapest in

April

Average price

$819

Good round-trip deal

$308 or less

Good one-way deal

$173 or less
From Washington, D.C. (WAS) to Philadelphia
One-way flight from Washington, D.C. (WAS) to Philadelphia
Highest demand for flights based on searches. 25% potential increase in price ($120 potential increase over avg. RT price).
Cheapest flight prices on average. 13% potential price decrease ($43 potential savings vs. average RT price).
Average for round-trip flights in August 2025
Price to beat on a round-trip flight from Washington, D.C. (WAS) to Philadelphia.
Price to beat on a one-way flight from Washington, D.C. (WAS) to Philadelphia.

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 August 31, 2025.

This Frontier deal was found by Cheapflights users on 8/30. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/297:45 pmBWI - PHL
1 stop4h 51mFrontier
Mon 10/66:00 amPHL - BWI
1 stop10h 50mFrontier
Deal found 8/30$153
This Frontier deal was found by Cheapflights users on 8/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/121:55 pmIAD - PHL
1 stop11h 02mFrontier
Mon 9/151:02 pmPHL - IAD
1 stop11h 13mFrontier
Deal found 8/29$153
This Frontier deal was found by Cheapflights users on 8/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/197:45 pmBWI - PHL
1 stop4h 44mFrontier
Mon 9/221:02 pmPHL - BWI
1 stop11h 15mFrontier
Deal found 8/29$154
This Frontier deal was found by Cheapflights users on 8/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/199:09 pmIAD - PHL
1 stop16h 46mFrontier
Mon 9/225:15 amPHL - IAD
1 stop13h 09mFrontier
Deal found 8/29$155
This Frontier deal was found by Cheapflights users on 8/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/263:15 pmIAD - PHL
1 stop8h 58mFrontier
Fri 10/312:30 pmPHL - IAD
1 stop5h 49mFrontier
Deal found 8/29$159
This FlightHub deal was found by Cheapflights users on 8/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/287:45 pmBWI - PHL
1 stop16h 12mFrontier
Sun 10/57:39 pmPHL - BWI
1 stop15h 21mFrontier
Deal found 8/29$160
This Frontier deal was found by Cheapflights users on 8/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/154:09 pmBWI - PHL
1 stop8h 43mFrontier
Fri 9/198:10 amPHL - BWI
1 stop9h 55mFrontier
Deal found 8/29$166
This FlightHub deal was found by Cheapflights users on 8/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/76:10 amIAD - PHL
1 stop18h 47mFrontier
Sat 9/136:37 pmPHL - IAD
1 stop5h 18mFrontier
Deal found 8/29$173
This American Airlines deal was found by Cheapflights users on 8/29. 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.
Tue 9/231:30 pmDCA - PHL
Nonstop1h 02mAmerican Airlines
Sat 10/49:36 amPHL - DCA
Nonstop1h 15mAmerican Airlines
Deal found 8/29$179
This United Airlines deal was found by Cheapflights users on 8/28. 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 9/278:30 amIAD - PHL
Nonstop1h 16mUnited Airlines
Sat 10/47:58 pmPHL - IAD
Nonstop1h 07mUnited Airlines
Deal found 8/28$179
This Frontier deal was found by Cheapflights users on 8/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/287:14 pmIAD - PHL
1 stop12h 21mFrontier
Fri 10/312:30 pmPHL - IAD
1 stop5h 49mFrontier
Deal found 8/29$181
This Frontier deal was found by Cheapflights users on 8/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/151:55 pmIAD - PHL
1 stop11h 02mFrontier
Fri 9/1912:59 pmPHL - IAD
1 stop11h 16mFrontier
Deal found 8/29$183

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 31, 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

Mon 9/29

7:45 pm-12:36 am

1 stop4h 51m

Philadelphia

Thu 10/2

5:15 am-10:48 am

1 stop5h 33m

$153

BaltimorePhiladelphia

BWI - PHL

BWIPHL

Baltimore/Washington

Mon 9/29

7:45 pm-12:36 am

1 stop4h 51m

Philadelphia

Mon 10/6

6:00 am-4:50 pm

1 stop10h 50m

$153

BaltimorePhiladelphia

BWI - PHL

BWIPHL

Baltimore/Washington

Sat 9/13

6:40 am-5:27 pm

1 stop10h 47m

Philadelphia

Wed 9/17

8:00 am-3:29 pm

1 stop7h 29m

$153

BaltimorePhiladelphia

BWI - PHL

BWIPHL

Baltimore/Washington

Fri 9/26

7:45 pm-12:29 am

1 stop4h 44m

Philadelphia

Fri 10/3

6:00 am-4:50 pm

1 stop10h 50m

$153

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Fri 9/12

1:55 pm-12:57 am

1 stop11h 02m

Philadelphia

Mon 9/15

1:02 pm-12:15 am

1 stop11h 13m

$153

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Mon 9/29

1:55 pm-12:57 am

1 stop11h 02m

Philadelphia

Thu 10/2

5:15 am-12:55 pm

1 stop7h 40m

$153

BaltimorePhiladelphia

BWI - PHL

BWIPHL

Baltimore/Washington

Fri 9/19

7:45 pm-12:29 am

1 stop4h 44m

Philadelphia

Mon 9/22

1:02 pm-12:17 am

1 stop11h 15m

$154

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Fri 9/19

9:09 pm-1:55 pm

1 stop16h 46m

Philadelphia

Mon 9/22

5:15 am-6:24 pm

1 stop13h 09m

$155

Washington, D.C.Philadelphia

IAD - PHL

IADPHL

Washington, D.C. Dulles Intl

Fri 9/26

3:15 pm-12:13 am

1 stop8h 58m

Philadelphia

Fri 10/3

12:30 pm-6:19 pm

1 stop5h 49m

$159

BaltimorePhiladelphia

BWI - PHL

BWIPHL

Baltimore/Washington

Mon 10/13

9:29 am-12:39 am

1 stop15h 10m

Philadelphia

Thu 10/16

6:10 am-3:27 pm

1 stop9h 17m

$160

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/28

Showing 1-10 of 58 results
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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

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, August is the cheapest month in which you can book a flight from Washington, D.C. to Philadelphia (average of $236). Flying from Washington, D.C. to Philadelphia in March is currently the most expensive (average of $295). 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 31, 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 43% versus a flight in the afternoon.

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 at noon 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 August 31, 2025.

The most flights from WAS to PHL are scheduled on a Monday (14 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (10 on average).

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

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 31, 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.

Overall

7.4

Food

6.6

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Overall

7.4

Food

6.6

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

Overall

7.4

Food

6.6

Comfort

7.3

Boarding

7.7

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Deb,Jan 2025

MKE - ORD

It was terrible! So much to say, but in a nutshell we used vouchers from United because our last trip with them was awful with many mishaps and errors made. Unfortunately, this trip was even worse!

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 12 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 02m. 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 American Airlines. These flights start at 50% 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 Spirit Airlines, with whom users have recently found tickets for as low as $100. However, be on the lookout for offers from Frontier 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?

  • 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, August is the cheapest month in which you can book a flight from Washington, D.C. to Philadelphia (average of $236). Flying from Washington, D.C. to Philadelphia in March is currently the most expensive (average of $295). 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
Vineland
Wildwood
King of Prussia
Pottstown
Reading
Millville
Ephrata
Camden
Cherry Hill
Dewey Beach
Dover
Elkton
Essington
Willow Grove
Newark
Ocean City
Chester
Exton
Springfield
Havre de Grace

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 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$179Average$325FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$179Average$374FlexibilityNo cancel feeOn-time71%

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