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$106+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PHL
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
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 July 31, 2025.

Round-trip from

$211
(Delta)

One-way from

$106
(Delta)

Popular in

December

Cheapest in

March

Average price

$462

Good round-trip deal

$342 or less

Good one-way deal

$203 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 ($30 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 July 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 July 31, 2025.

This Delta deal was found by Cheapflights users on 7/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/225:05 pmPDX - PHL
1 stop9h 40mDelta
Mon 8/256:00 amPHL - PDX
1 stop7h 40mDelta
Deal found 7/30$211
This Frontier deal was found by Cheapflights users on 7/30. 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.
Tue 8/57:01 pmPDX - PHL
1 stop7h 08mFrontier
Wed 8/136:15 amPHL - PDX
1 stop8h 15mFrontier
Deal found 7/30$258
This Southwest deal was found by Cheapflights users on 7/31. 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 8/286:10 amPDX - PHL
1 stop7h 10mSouthwest
Thu 9/44:25 pmPHL - PDX
1 stop9h 40mSouthwest
Deal found 7/31$264
This Mytrip deal was found by Cheapflights users on 7/31. 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.
Fri 8/228:46 amPDX - PHL
2 stops22h 10mMultiple Airlines
Tue 8/269:00 amPHL - PDX
1 stop12h 57mMultiple Airlines
Deal found 7/31$267
This Frontier deal was found by Cheapflights users on 7/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/711:58 amGEG - PHL
1 stop7h 11mFrontier
Tue 8/126:15 amPHL - GEG
1 stop7h 51mFrontier
Deal found 7/28$278
This Trip.com deal was found by Cheapflights users on 7/31. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/17:00 amSEA - PHL
1 stop13h 43mMultiple Airlines
Thu 10/27:22 amPHL - SEA
Nonstop5h 56mMultiple Airlines
Deal found 7/31$283
This FlightHub deal was found by Cheapflights users on 7/31. 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 8/206:41 amSEA - PHL
1 stop19h 13mFrontier
Thu 8/217:15 amPHL - SEA
1 stop10h 25mFrontier
Deal found 7/31$285
This United Airlines deal was found by Cheapflights users on 7/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/257:00 pmSEA - PHL
1 stop7h 35mUnited Airlines
Tue 8/263:40 pmPHL - SEA
1 stop8h 37mUnited Airlines
Deal found 7/30$292
This Southwest deal was found by Cheapflights users on 7/31. 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.
Wed 11/56:35 amSEA - PHL
1 stop7h 40mSouthwest
Wed 11/124:55 pmPHL - SEA
1 stop9h 00mSouthwest
Deal found 7/31$296
This Delta deal was found by Cheapflights users on 7/31. 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 9/187:30 pmSEA - PHL
1 stop7h 15mDelta
Tue 9/306:25 pmPHL - SEA
1 stop8h 29mDelta
Deal found 7/31$297
This American Airlines deal was found by Cheapflights users on 7/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2011:12 pmPDX - PHL
Nonstop5h 01mAmerican Airlines
Sat 8/237:00 pmPHL - PDX
Nonstop6h 04mAmerican Airlines
Deal found 7/30$304
This Alaska Airlines deal was found by Cheapflights users on 7/31. 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.
Tue 10/71:25 pmPDX - PHL
1 stop13h 15mAlaska Airlines
Sat 10/117:00 amPHL - PDX
1 stop8h 25mAlaska Airlines
Deal found 7/31$310

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 July 31, 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

PortlandPhiladelphia

PDX - PHL

PDXPHL

Portland

Fri 8/22

5:05 pm-5:45 am

1 stop9h 40m

Philadelphia

Sat 8/30

6:59 pm-11:31 pm

1 stop7h 32m

$211

PortlandPhiladelphia

PDX - PHL

PDXPHL

Portland

Thu 8/28

6:10 am-4:20 pm

1 stop7h 10m

Philadelphia

Thu 9/4

4:25 pm-11:05 pm

1 stop9h 40m

$264

PortlandPhiladelphia

PDX - PHL

PDXPHL

Portland

Fri 8/22

8:46 am-9:56 am

2 stops22h 10m

Philadelphia

Tue 8/26

9:00 am-6:57 pm

1 stop12h 57m

$267

PortlandPhiladelphia

PDX - PHL

PDXPHL

Portland

Tue 8/12

7:01 pm-5:09 am

1 stop7h 08m

Philadelphia

Thu 8/14

1:02 pm-12:16 am

1 stop14h 14m

$278

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Wed 10/1

7:00 am-11:43 pm

1 stop13h 43m

Philadelphia

Thu 10/2

7:22 am-10:18 am

Nonstop5h 56m

$283

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Fri 9/19

6:12 am-12:57 am

1 stop15h 45m

Philadelphia

Sat 9/20

6:45 am-8:39 pm

1 stop16h 54m

$285

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Fri 8/29

7:00 pm-5:35 am

1 stop7h 35m

Philadelphia

Tue 9/2

6:30 am-1:28 pm

1 stop9h 58m

$292

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Thu 9/18

7:30 pm-5:45 am

1 stop7h 15m

Philadelphia

Tue 9/30

6:25 pm-11:54 pm

1 stop8h 29m

$297

PortlandPhiladelphia

PDX - PHL

PDXPHL

Portland

Wed 8/20

11:12 pm-7:13 am

Nonstop5h 01m

Philadelphia

Sat 8/23

7:00 pm-10:04 pm

Nonstop6h 04m

$304

PortlandPhiladelphia

PDX - PHL

PDXPHL

Portland

Tue 10/7

1:25 pm-5:40 am

1 stop13h 15m

Philadelphia

Sat 10/11

7:00 am-12:25 pm

1 stop8h 25m

$310

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

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 July 31, 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 July 31, 2025.

The most flights from USWA to PHL are scheduled on a Thursday (12 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (7 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 July 31, 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

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,246 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Hawaiian Airlines
7.8
Good
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,900 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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 13 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 Delta, with whom users have recently found tickets for as low as $106. However, be on the lookout for offers from Spirit 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: American Airlines (77%), Hawaiian Airlines (68%), Air Tahiti Nui (68%).

  • 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 $629, our data indicates the cheapest price to be $138. The most popular route (Seattle/Tacoma Intl - Philadelphia), is priced around $265.

  • 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
Cherry Hill
Ocean City
Chester
Millville
Reading
Ephrata
Camden
Dewey Beach
Dover
Elkton
Essington
Willow Grove
Newark
Exton
Glen Mills
Springfield

Browse thousands of different options on Cheapflights for your next trip

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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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$113Average$249FlexibilityNo cancel feeOn-time65%
FrontierCheapest$132Average$282FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$256Average$455FlexibilityNo cancel feeOn-time69%
DeltaCheapest$276Average$449FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$291Average$643FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$296Average$424FlexibilityNo cancel feeOn-time71%
Sun Country AirCheapest$311Average$480FlexibilityNo cancel feeOn-time83%
Hawaiian AirlinesCheapest$327Average$549FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$343Average$444FlexibilityNo cancel feeOn-time63%

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