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$110+ 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 5/29. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PHL
May 17 — May 241
Sat 5/17
Sat 5/24
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 May 12, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$270
(Frontier)

One-way from

$110
(Frontier)

Popular in

December

Cheapest in

March

Average price

$439

Good round-trip deal

$393 or less

Good one-way deal

$233 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Philadelphia flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Philadelphia flights.
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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. 5% potential increase in price ($24 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 12, 2025.

This Frontier deal was found by Cheapflights users on 5/12. 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 9/2112:08 pmGEG - PHL
1 stop13h 41mFrontier
Thu 9/256:19 amPHL - GEG
1 stop7h 49mFrontier
Deal found 5/12$270
This Mytrip deal was found by Cheapflights users on 5/11. 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.
Thu 6/51:37 pmPDX - PHL
2 stops13h 53mSpirit Airlines
Sat 6/77:45 amPHL - PDX
2 stops31h 57mSpirit Airlines
Deal found 5/11$301
This FlightHub deal was found by Cheapflights users on 5/12. 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.
Fri 5/233:11 pmSEA - PHL
1 stop11h 27mMultiple Airlines
Fri 5/3012:23 pmPHL - SEA
2 stops14h 47mMultiple Airlines
Deal found 5/12$305
This Mytrip deal was found by Cheapflights users on 5/11. 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 6/243:58 pmSEA - PHL
2 stops12h 02mSpirit Airlines
Thu 7/310:42 amPHL - SEA
1 stop31h 21mSpirit Airlines
Deal found 5/11$306
This American Airlines deal was found by Cheapflights users on 5/11. 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.
Mon 5/1910:59 pmSEA - PHL
Nonstop5h 08mAmerican Airlines
Mon 6/97:10 pmPHL - SEA
Nonstop6h 16mAmerican Airlines
Deal found 5/11$307
This Mytrip deal was found by Cheapflights users on 5/11. 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 7/16:53 pmPDX - PHL
1 stop7h 17mFrontier
Thu 7/106:15 amPHL - PDX
1 stop21h 01mFrontier
Deal found 5/11$307
This FlightHub deal was found by Cheapflights users on 5/11. 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.
Fri 6/203:11 pmSEA - PHL
1 stop11h 38mFrontier
Wed 6/256:15 amPHL - SEA
1 stop20h 29mFrontier
Deal found 5/11$308
This Delta deal was found by Cheapflights users on 5/12. 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 7/37:45 pmSEA - PHL
1 stop7h 05mDelta
Thu 7/106:54 pmPHL - SEA
1 stop8h 05mDelta
Deal found 5/12$310
This FlightHub deal was found by Cheapflights users on 5/11. 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.
Tue 7/16:53 pmPDX - PHL
1 stop7h 17mMultiple Airlines
Mon 7/710:42 amPHL - PDX
1 stop10h 15mMultiple Airlines
Deal found 5/11$313
This Delta deal was found by Cheapflights users on 5/12. 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 6/102:22 pmGEG - PHL
1 stop7h 04mDelta
Tue 6/177:05 pmPHL - GEG
1 stop7h 06mDelta
Deal found 5/12$323
This Alaska Airlines deal was found by Cheapflights users on 5/12. 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.
Wed 6/49:25 pmSEA - PHL
Nonstop5h 15mAlaska Airlines
Mon 6/96:59 pmPHL - SEA
Nonstop5h 59mAlaska Airlines
Deal found 5/12$337
This Mytrip deal was found by Cheapflights users on 5/12. 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.
Mon 5/269:51 amPSC - PHL
2 stops31h 34mMultiple Airlines
Thu 5/297:45 amPHL - PSC
2 stops28h 21mMultiple Airlines
Deal found 5/12$341

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 May 12, 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

Sun 9/21

12:08 pm-4:49 am

1 stop13h 41m

Philadelphia

Thu 9/25

6:19 am-11:08 am

1 stop7h 49m

$270

PortlandPhiladelphia

PDX - PHL

PDXPHL

Portland

Thu 6/5

5:40 pm-6:30 am

2 stops33h 50m

Philadelphia

Sun 6/15

8:15 am-11:17 am

2 stops30h 02m

$301

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Fri 5/23

3:11 pm-5:38 am

1 stop11h 27m

Philadelphia

Fri 5/30

12:23 pm-12:10 am

2 stops14h 47m

$305

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Tue 6/24

3:58 pm-7:00 am

2 stops12h 02m

Philadelphia

Thu 7/3

10:42 am-3:03 pm

1 stop31h 21m

$306

PortlandPhiladelphia

PDX - PHL

PDXPHL

Portland

Tue 7/1

6:53 pm-5:10 am

1 stop7h 17m

Philadelphia

Thu 7/10

6:15 am-12:16 am

1 stop21h 01m

$307

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Fri 6/20

3:11 pm-5:49 am

1 stop11h 38m

Philadelphia

Wed 6/25

6:15 am-11:44 pm

1 stop20h 29m

$308

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Thu 7/3

7:40 am-8:59 pm

1 stop10h 19m

Philadelphia

Fri 7/11

6:54 pm-11:59 pm

1 stop8h 05m

$310

PortlandPhiladelphia

PDX - PHL

PDXPHL

Portland

Tue 7/1

6:53 pm-5:10 am

1 stop7h 17m

Philadelphia

Mon 7/7

10:42 am-5:57 pm

1 stop10h 15m

$313

SeattlePhiladelphia

SEA - PHL

SEAPHL

Seattle/Tacoma Intl

Thu 8/21

10:50 pm-7:00 am

Nonstop5h 10m

Philadelphia

Sun 8/24

4:34 pm-7:33 pm

Nonstop5h 59m

$317

SpokanePhiladelphia

GEG - PHL

GEGPHL

Spokane

Tue 6/10

2:22 pm-12:26 am

1 stop7h 04m

Philadelphia

Tue 6/17

7:05 pm-11:11 pm

1 stop7h 06m

$323

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/12

Showing 1-10 of 58 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 May 12, 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 May 12, 2025.

The most flights from USWA to PHL are scheduled on a Sunday (9 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in Philadelphia by month

Plan your trip to Philadelphia by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Philadelphia ranges from 2.7 - 4.4 inches per month. July is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Philadelphia when rainfall is around 2.7 in.

Temperature in Philadelphia by month

Plan your trip to Philadelphia by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Philadelphia, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

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 May 12, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest and Delta from Washington to Philadelphia by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Comfort

7.9

Entertainment

7.1

Overall

8.0

Crew

8.5

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

Food

7.1

Comfort

7.9

Entertainment

7.1

Overall

8.0

Crew

8.5

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
4,290 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Comfort

7.9

Entertainment

7.1

Overall

8.0

Crew

8.5

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
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Comfort

7.9

Entertainment

7.1

Overall

8.0

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,432 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Comfort

7.9

Entertainment

7.1

Overall

8.0

Crew

8.5

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
8,724 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Food

7.1

Comfort

7.9

Entertainment

7.1

Overall

8.0

Crew

8.5

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 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 Frontier, with whom users have recently found tickets for as low as $110. However, be on the lookout for offers from Spirit Airlines and Delta, 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: Alaska Airlines (87%), Hawaiian Airlines (87%), Air Tahiti Nui (87%).

  • 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 $819, our data indicates the cheapest price to be $168. The most popular route (Seattle/Tacoma Intl - Philadelphia), is priced around $202.

  • 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
Pottstown
Wildwood
Reading
King of Prussia
Cherry Hill
Exton
Ocean City
Essington
Chester
Middletown
Willow Grove
Newark
Millville
Dover
Ephrata
Camden
Dewey Beach
Glen Mills
Springfield

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Alternative routes for Washington to Philadelphia

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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 May 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$85Average$214FlexibilityNo cancel feeOn-time65%
FrontierCheapest$132Average$260FlexibilityNo cancel feeOn-time62%
Sun Country AirCheapest$220Average$325FlexibilityNo cancel feeOn-time83%
United AirlinesCheapest$256Average$465FlexibilityNo cancel feeOn-time69%
DeltaCheapest$276Average$450FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$295Average$685FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$302Average$448FlexibilityNo cancel feeOn-time71%
Hawaiian AirlinesCheapest$327Average$540FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$346Average$438FlexibilityNo cancel feeOn-time63%

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