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$149+ Cheap flights from Washington 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 10/22. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PHL
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Washington to Philadelphia

Keep the following information in mind while searching for Washington to Philadelphia flight deals. Data was last updated September 15, 2025.

Round-trip from

$215
(Frontier)

One-way from

$149
(American Airlines)

Popular in

December

Cheapest in

March

Average price

$417

Good round-trip deal

$315 or less

Good one-way deal

$198 or less
From Washington to Philadelphia
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One-way flight from Washington to Philadelphia
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Highest demand for flights based on searches. 6% potential increase in price ($28 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Washington to Philadelphia.
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Price to beat on a one-way flight from Washington to Philadelphia.
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Find flight deals from Washington to Philadelphia

Cheapest flights from Washington to Philadelphia
Explore the most affordable flight options available from Washington to Philadelphia. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Delta deal was found by Cheapflights users on 9/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:00 amGEG - PHL
1 stop8h 40mDelta
Mon 12/86:15 amPHL - GEG
1 stop9h 53mDelta
Deal found 9/13$233
This CheapOair deal was found by Cheapflights users on 9/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/247:15 amPDX - PHL
1 stop13h 28mFrontier
Mon 9/296:45 amPHL - PDX
1 stop20h 27mFrontier
Deal found 9/13$272
This Frontier deal was found by Cheapflights users on 9/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1312:44 pmPDX - PHL
2 stops18h 50mFrontier
Mon 10/206:42 amPHL - PDX
1 stop8h 06mFrontier
Deal found 9/13$273
This CheapOair deal was found by Cheapflights users on 9/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/612:52 pmPDX - PHL
2 stops19h 47mFrontier
Sun 11/99:33 amPHL - PDX
2 stops29h 23mFrontier
Deal found 9/13$274
This Frontier deal was found by Cheapflights users on 9/15. 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 10/2410:34 amPDX - PHL
2 stops15h 45mFrontier
Fri 10/316:19 amPHL - PDX
2 stops11h 12mFrontier
Deal found 9/15$276
This Delta deal was found by Cheapflights users on 9/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/207:12 pmSEA - PHL
1 stop7h 43mDelta
Sun 11/237:10 amPHL - SEA
1 stop8h 46mDelta
Deal found 9/15$277
This CheapOair deal was found by Cheapflights users on 9/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/256:05 amPDX - PHL
1 stop15h 52mFrontier
Mon 9/296:00 amPHL - PDX
2 stops21h 12mFrontier
Deal found 9/13$277
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Thu 10/1612:43 pmPDX - PHL
2 stops39h 19mFrontier
Fri 10/246:42 amPHL - PDX
1 stop8h 06mFrontier
Deal found 9/14$279
This CheapOair deal was found by Cheapflights users on 9/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/172:31 pmSEA - PHL
1 stop11h 48mFrontier
Tue 10/215:53 pmPHL - SEA
2 stops21h 14mFrontier
Deal found 9/13$280
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Thu 10/1612:43 pmPDX - PHL
2 stops39h 19mFrontier
Mon 10/206:42 amPHL - PDX
1 stop8h 06mFrontier
Deal found 9/14$280
This KAYAK deal was found by Cheapflights users on 9/13. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/129:23 pmSEA - PHL
Nonstop5h 17mAlaska Airlines
Mon 10/207:11 pmPHL - SEA
Nonstop6h 18mAlaska Airlines
Deal found 9/13$281
This CheapOair deal was found by Cheapflights users on 9/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/286:05 amPDX - PHL
2 stops31h 50mFrontier
Thu 10/26:45 amPHL - PDX
1 stop20h 27mFrontier
Deal found 9/13$281

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington 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 September 15, 2025.
Use the filters below to find and compare flights from Washington to Philadelphia that are best for you.

Fly from

Washington

Fly to

Philadelphia

Route

Depart

Return

Price

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Thu 10/23

12:03 pm-3:00 pm

2 stops23h 57m

Philadelphia

Thu 10/30

6:19 am-11:08 am

1 stop7h 49m

$241

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Wed 11/5

11:15 pm-8:41 am

1 stop6h 26m

Philadelphia

Wed 11/19

2:30 pm-8:44 pm

1 stop9h 14m

$277

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Fri 10/10

9:23 pm-5:40 am

Nonstop5h 17m

Philadelphia

Tue 10/14

7:00 am-9:49 am

Nonstop5h 49m

$277

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Tue 10/21

1:40 pm-12:52 am

1 stop8h 12m

Philadelphia

Sun 10/26

6:00 am-10:33 am

1 stop7h 33m

$277

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Wed 11/19

1:39 pm-11:50 pm

1 stop7h 11m

Philadelphia

Sun 11/23

6:00 am-10:54 am

1 stop7h 54m

$277

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Tue 11/11

11:10 pm-8:42 am

1 stop6h 32m

Philadelphia

Sat 11/15

6:00 am-12:57 pm

1 stop9h 57m

$277

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Fri 10/10

11:55 pm-10:56 am

1 stop8h 01m

Philadelphia

Fri 10/17

6:50 pm-11:59 pm

1 stop8h 09m

$277

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Thu 11/20

7:12 pm-5:55 am

1 stop7h 43m

Philadelphia

Sun 11/23

7:10 am-12:56 pm

1 stop8h 46m

$277

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Fri 11/21

5:00 pm-5:55 am

1 stop9h 55m

Philadelphia

Mon 11/24

7:10 am-2:54 pm

1 stop10h 44m

$277

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Fri 10/17

7:18 pm-5:50 am

1 stop7h 32m

Philadelphia

Tue 10/21

7:00 pm-11:57 pm

1 stop7h 57m

$277

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 60 results
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Best time to book a flight from Washington to Philadelphia

Have a flexible travel schedule? Discover the best time to fly to Philadelphia from Washington 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 to Philadelphia

What is the cheapest month to book a flight from State of Washington to Philadelphia?

Currently, August is the cheapest month in which you can book a flight from State of Washington to Philadelphia (average of $236). Flying from State of Washington 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 WA to PHL?

Find hourly flight availability from Washington 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 September 15, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from State of Washington to Philadelphia as you normally would.

Weekly flight availability from State of Washington to Philadelphia

Explore weekly flight availability from Washington 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 September 15, 2025.

The most flights from USWA to PHL are scheduled on a Saturday (13 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (10 on average).

Related info for your journey

Find useful and relevant information for your journey from Washington 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?

    If you book a flight to Philadelphia from Washington, you will be flying to Philadelphia, which is the city’s only airport. Philadelphia (PHL) is located 7.0 mi from the center of Philadelphia.

  • How popular is this State of Washington to Philadelphia flight route?

    Flights from Washington to Philadelphia have been viewed 9 times in the past calendar month.

  • How long is the flight from State of Washington to Philadelphia?

    For as low as $277, Frontier can have you in Philadelphia from State of Washington in 5h 17m. Airlines will cover a distance of 2370 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from State of Washington to Philadelphia one-way?

    The cheapest airline one-way is Hawaiian Airlines, with whom users have recently found tickets for as low as $149. However, be on the lookout for offers from Alaska Airlines and Frontier, as they are both options that can get you from State of Washington to Philadelphia for a low price.

  • What are the most popular routes from State of Washington to Philadelphia?

    While some choose either Portland - Philadelphia or Spokane - Philadelphia, Seattle/Tacoma Intl - Philadelphia is the most popular route from State of Washington to Philadelphia.

  • What are the most reliable airlines from State of Washington to Philadelphia?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from State of Washington to Philadelphia on time: Hawaiian Airlines (77%), Finnair (75%), American Airlines (71%).

  • What are the cheapest flights from State of Washington to Philadelphia?

    Looking for the cheapest flight from State of Washington to Philadelphia? While on average our users pay $939, our data indicates the cheapest price to be $133. The most popular route (Seattle/Tacoma Intl - Philadelphia), is priced around $241.

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

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

  • How can I find direct flights from Washington to Philadelphia?

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

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

    Yes. Cheapflights offers flight deals from Washington 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 State of Washington to Philadelphia?

    Currently, August is the cheapest month in which you can book a flight from State of Washington to Philadelphia (average of $236). Flying from State of Washington 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
Dewey Beach
Ephrata
Camden
Ocean City
Cherry Hill
Dover
Elkton
Essington
Willow Grove
Newark
Millville
Chester
Exton
Havre de Grace
Plymouth Meeting

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Alternative routes for Washington to Philadelphia

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Top 8 airlines flying from Washington to Philadelphia

Discover the top 8 airlines that operate flights from Washington 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$114Average$258FlexibilityNo cancel feeOn-time65%
FrontierCheapest$131Average$284FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$223Average$510FlexibilityNo cancel feeOn-time69%
DeltaCheapest$235Average$439FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$277Average$540FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$278Average$611FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$278Average$465FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$343Average$447FlexibilityNo cancel feeOn-time63%

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