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Philadelphia

$96+ 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 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PHL
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
1 adult, Economy
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Cheap 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 January 29, 2026.

This American Airlines deal was found by Cheapflights users on 1/26. 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 2/2610:57 pm
SEA
-
PHL
Nonstop5h 05m
American Airlines
Tue 3/36:35 pm
PHL
-
SEA
Nonstop6h 22m
American Airlines
Deal found 1/26$237
This CheapOair deal was found by Cheapflights users on 1/27. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/261:16 pm
SEA
-
PHL
1 stop25h 39m
Frontier
Sun 3/15:47 pm
PHL
-
SEA
1 stop20h 32m
Frontier
Deal found 1/27$240
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/191:16 pm
SEA
-
PHL
1 stop25h 39m
Frontier
Wed 2/2511:40 am
PHL
-
SEA
2 stops27h 21m
Frontier
Deal found 1/28$241
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
Sun 2/2212:00 pm
SEA
-
PHL
1 stop25h 37m
Frontier
Fri 2/277:05 pm
PHL
-
SEA
1 stop19h 56m
Frontier
Deal found 1/27$249
This CheapOair deal was found by Cheapflights users on 1/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/26:57 pm
SEA
-
PHL
1 stop7h 37m
Frontier
Wed 5/68:25 pm
PHL
-
SEA
1 stop16h 02m
Frontier
Deal found 1/28$252
This United Airlines deal was found by Cheapflights users on 1/26. 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.
Mon 2/239:19 am
SEA
-
PHL
1 stop9h 14m
United Airlines
Wed 3/45:00 pm
PHL
-
SEA
1 stop8h 43m
United Airlines
Deal found 1/26$253
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
Fri 3/612:24 pm
SEA
-
PHL
1 stop14h 07m
Frontier
Wed 3/115:05 am
PHL
-
SEA
2 stops18h 58m
Frontier
Deal found 1/27$255
This Kiwi.com deal was found by Cheapflights users on 1/27. 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.
Fri 3/612:24 pm
SEA
-
PHL
1 stop14h 07m
Frontier
Mon 3/98:33 pm
PHL
-
SEA
2 stops23h 36m
Frontier
Deal found 1/27$256
This Delta deal was found by Cheapflights users on 1/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/176:00 am
SEA
-
PHL
1 stop9h 08m
Delta
Tue 4/215:32 pm
PHL
-
SEA
1 stop7h 17m
Delta
Deal found 1/27$257
This Delta deal was found by Cheapflights users on 1/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/285:13 pm
PSC
-
PHL
1 stop9h 22m
Delta
Tue 5/56:54 pm
PHL
-
PSC
1 stop7h 45m
Delta
Deal found 1/28$257
This Delta deal was found by Cheapflights users on 1/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/285:45 am
GEG
-
PHL
1 stop8h 44m
Delta
Sat 3/75:31 am
PHL
-
GEG
1 stop9h 04m
Delta
Deal found 1/29$257
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/191:16 pm
SEA
-
PHL
1 stop25h 39m
Frontier
Tue 2/244:14 pm
PHL
-
SEA
2 stops42h 59m
Frontier
Deal found 1/28$258

Find flight deals from Washington to Philadelphia

Keep the following information in mind while searching for Washington to Philadelphia flight deals. Data was last updated January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$237
(American Airlines)

One-way from

$96
(Expedia)

Popular in

December

Cheapest in

October

Average price

$368

Good round-trip deal

$283 or less

Good one-way deal

$173 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Philadelphia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Philadelphia flights.
Search Deals
From Washington to Philadelphia
Search Deals
One-way flight from Washington to Philadelphia
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($15 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Washington to Philadelphia.
Search Deals
Price to beat on a one-way flight from Washington to Philadelphia.
Search Deals

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 January 29, 2026.
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

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Mon 2/23

9:19 am-9:33 pm

1 stop9h 14m

Philadelphia

Wed 3/4

5:00 pm-10:43 pm

1 stop8h 43m

$253

PascoPhiladelphia

PSC - PHL

PSCPHL

Pasco Tri Cities

Tue 4/28

5:13 pm-5:35 am

1 stop9h 22m

Philadelphia

Tue 5/5

6:54 pm-11:39 pm

1 stop7h 45m

$257

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Tue 2/24

7:00 am-5:14 pm

1 stop7h 14m

Philadelphia

Tue 3/3

5:00 pm-10:43 pm

1 stop8h 43m

$257

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Sat 2/28

5:45 am-5:29 pm

1 stop8h 44m

Philadelphia

Sat 3/7

5:31 am-11:35 am

1 stop9h 04m

$257

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Thu 2/26

7:00 am-5:14 pm

1 stop7h 14m

Philadelphia

Tue 3/3

5:00 pm-10:43 pm

1 stop8h 43m

$257

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Tue 2/24

6:45 am-5:05 pm

1 stop7h 20m

Philadelphia

Tue 3/3

5:00 pm-10:30 pm

1 stop8h 30m

$277

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Tue 3/31

9:55 pm-6:05 am

Nonstop5h 10m

Philadelphia

Mon 4/6

7:25 am-10:30 am

Nonstop6h 05m

$277

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Tue 3/31

9:55 pm-6:05 am

Nonstop5h 10m

Philadelphia

Tue 4/7

7:25 am-10:30 am

Nonstop6h 05m

$277

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Tue 2/24

11:59 pm-10:24 am

1 stop7h 25m

Philadelphia

Sat 2/28

5:00 pm-10:43 pm

1 stop8h 43m

$282

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Tue 4/21

7:00 am-5:33 pm

1 stop7h 33m

Philadelphia

Fri 4/24

11:36 am-7:00 pm

1 stop10h 24m

$287

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

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, December is the cheapest month in which you can book a flight from State of Washington to Philadelphia (average of $129). Flying from State of Washington to Philadelphia in February is currently the most expensive (average of $198). 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 January 29, 2026.

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 January 29, 2026.

The most flights from USWA to PHL are scheduled on a Monday (6 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (2 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 7 times in the past calendar month.

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

    For as low as $297, United Airlines can have you in Philadelphia from State of Washington in 8h 28m. Airlines will cover a distance of 2147 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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: Qatar Airways (100%), British Airways (100%), American Airlines (89%).

  • 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 $645, our data indicates the cheapest price to be $112. The most popular route (Seattle/Tacoma Intl - Philadelphia), is priced around $237.

  • 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, December is the cheapest month in which you can book a flight from State of Washington to Philadelphia (average of $129). Flying from State of Washington to Philadelphia in February is currently the most expensive (average of $198). 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
Pottstown
Reading
Ocean City
King of Prussia
Cherry Hill
Lewes
Dewey Beach
Ephrata
Camden
Vineland
Milford
Dover
Elkton
Essington
Willow Grove
New Castle
Millville
Newark
Chester

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Alternative routes for Washington to Philadelphia

See prices for flight routes from nearby airports that may be better suited for you.
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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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$72Average$258FlexibilityNo cancel feeOn-time65%
FrontierCheapest$131Average$286FlexibilityNo cancel feeOn-time62%
DeltaCheapest$153Average$412FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$206Average$474FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$228Average$510FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$258Average$422FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$274Average$615FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$295Average$453FlexibilityNo cancel feeOn-time63%

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