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$143+ 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 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PHL
Jul 1 — Jul 81
Tue 7/1
Tue 7/8
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 June 26, 2025.

Round-trip from

$305
(Delta)

One-way from

$143
(Priceline)

Popular in

December

Cheapest in

March

Average price

$476

Good round-trip deal

$395 or less

Good one-way deal

$208 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 June 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 June 26, 2025.

This Delta deal was found by Cheapflights users on 6/24. 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 8/19:30 pmSEA - PHL
1 stop10h 00mDelta
Thu 8/146:45 amPHL - SEA
1 stop10h 05mDelta
Deal found 6/24$305
This Frontier deal was found by Cheapflights users on 6/24. 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 7/113:11 pmSEA - PHL
1 stop11h 38mFrontier
Mon 7/217:19 amPHL - SEA
1 stop9h 47mFrontier
Deal found 6/24$306
This Southwest deal was found by Cheapflights users on 6/25. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/211:45 amSEA - PHL
2 stops9h 25mSouthwest
Sat 10/412:05 pmPHL - SEA
2 stops13h 00mSouthwest
Deal found 6/25$307
This Kiwi.com deal was found by Cheapflights users on 6/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/39:45 pmSEA - PHL
Nonstop5h 15mHawaiian Airlines
Thu 9/116:58 pmPHL - SEA
Nonstop6h 02mHawaiian Airlines
Deal found 6/26$310
This Kiwi.com deal was found by Cheapflights users on 6/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/29:45 pmSEA - PHL
Nonstop5h 15mMultiple Airlines
Tue 9/167:20 amPHL - SEA
Nonstop5h 52mMultiple Airlines
Deal found 6/26$314
This FlightHub deal was found by Cheapflights users on 6/25. 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.
Wed 7/912:25 pmPDX - PHL
1 stop13h 44mMultiple Airlines
Mon 7/216:22 pmPHL - PDX
1 stop17h 56mMultiple Airlines
Deal found 6/25$317
This Frontier deal was found by Cheapflights users on 6/25. 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.
Thu 7/106:35 amPDX - PHL
1 stop12h 34mFrontier
Wed 7/236:15 amPHL - PDX
1 stop8h 15mFrontier
Deal found 6/25$318
This Mytrip deal was found by Cheapflights users on 6/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/223:10 pmPDX - PHL
2 stops26h 41mSpirit Airlines
Tue 7/299:15 pmPHL - PDX
2 stops20h 00mSpirit Airlines
Deal found 6/24$320
This Delta deal was found by Cheapflights users on 6/23. 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 10/2111:45 amPDX - PHL
1 stop7h 28mDelta
Tue 11/185:15 pmPHL - PDX
2 stops9h 36mDelta
Deal found 6/23$322
This Alaska Airlines deal was found by Cheapflights users on 6/26. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/19:00 amGEG - PHL
1 stop18h 40mAlaska Airlines
Sat 11/87:00 amPHL - GEG
1 stop9h 58mAlaska Airlines
Deal found 6/26$322
This American Airlines deal was found by Cheapflights users on 6/25. 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.
Fri 7/410:54 amGEG - PHL
1 stop6h 32mAmerican Airlines
Sat 7/57:20 amPHL - GEG
1 stop8h 40mAmerican Airlines
Deal found 6/25$323
This American Airlines deal was found by Cheapflights users on 6/24. 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.
Wed 8/1312:46 amSEA - PHL
1 stop7h 58mAmerican Airlines
Mon 8/187:10 pmPHL - SEA
Nonstop6h 16mAmerican Airlines
Deal found 6/24$327

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 June 26, 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

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Fri 8/1

9:30 pm-10:30 am

1 stop10h 00m

Philadelphia

Thu 8/14

6:45 am-1:50 pm

1 stop10h 05m

$305

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Fri 7/11

3:11 pm-5:49 am

1 stop11h 38m

Philadelphia

Mon 7/21

7:19 am-2:06 pm

1 stop9h 47m

$306

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Wed 9/3

11:05 pm-7:09 am

Nonstop5h 04m

Philadelphia

Sat 9/13

6:50 pm-10:04 pm

Nonstop6h 14m

$307

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Wed 9/3

9:45 pm-6:00 am

Nonstop5h 15m

Philadelphia

Thu 9/11

6:58 pm-10:00 pm

Nonstop6h 02m

$310

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Tue 7/15

5:30 pm-8:51 pm

2 stops24h 21m

Philadelphia

Tue 7/22

9:15 pm-4:25 pm

2 stops22h 10m

$312

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Tue 9/2

9:45 pm-6:00 am

Nonstop5h 15m

Philadelphia

Tue 9/16

7:20 am-10:12 am

Nonstop5h 52m

$314

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Wed 8/20

8:00 am-9:05 pm

2 stops10h 05m

Philadelphia

Sat 8/23

2:20 pm-9:30 pm

2 stops10h 10m

$317

PortlandPhiladelphia

PDX - PHL

PDXPHL

Portland

Wed 7/9

12:25 pm-5:09 am

1 stop13h 44m

Philadelphia

Mon 7/21

6:22 pm-9:18 am

1 stop17h 56m

$317

PortlandPhiladelphia

PDX - PHL

PDXPHL

Portland

Thu 7/10

6:35 am-10:09 pm

1 stop12h 34m

Philadelphia

Wed 7/23

6:15 am-11:30 am

1 stop8h 15m

$318

PortlandPhiladelphia

PDX - PHL

PDXPHL

Portland

Tue 7/22

3:10 pm-8:51 pm

2 stops26h 41m

Philadelphia

Tue 7/29

9:15 pm-2:15 pm

2 stops20h 00m

$320

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/24

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 June 26, 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 June 26, 2025.

The most flights from USWA to PHL are scheduled on a Thursday (11 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).

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 June 26, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta from Washington to Philadelphia have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,276 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,964 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,522 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,838 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 14 times in the past calendar month.

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

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $143. However, be on the lookout for offers from Spirit Airlines and Southwest, 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: American Airlines (81%), Hawaiian Airlines (78%), Air Tahiti Nui (78%).

  • 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 $984, our data indicates the cheapest price to be $148. The most popular route (Seattle/Tacoma Intl - Philadelphia), is priced around $251.

  • 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 Washington?

Book flights to Washington if you plan to visit one of these locations
Vineland
Wildwood
King of Prussia
Cherry Hill
Pottstown
Ocean City
Chester
Exton
Essington
Reading
Newark
Millville
Ephrata
Camden
Dover
Elkton
Willow Grove
Glen Mills
Springfield
Phoenixville

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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 9 airlines flying from Washington to Philadelphia

Discover the top 9 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 June 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$113Average$233FlexibilityNo cancel feeOn-time65%
FrontierCheapest$138Average$284FlexibilityNo cancel feeOn-time62%
Sun Country AirCheapest$230Average$416FlexibilityNo cancel feeOn-time83%
United AirlinesCheapest$256Average$456FlexibilityNo cancel feeOn-time69%
DeltaCheapest$276Average$448FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$296Average$674FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$298Average$428FlexibilityNo cancel feeOn-time71%
Hawaiian AirlinesCheapest$327Average$557FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$346Average$440FlexibilityNo cancel feeOn-time63%

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