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$139+ Cheap flights from Philadelphia (PHL) to Washington

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 11/14. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SEA
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Philadelphia to Washington

Keep the following information in mind while searching for Philadelphia to Washington flight deals. Data was last updated September 16, 2025.

Round-trip from

$214
(Frontier)

One-way from

$139
(Southwest)

Popular in

June

Cheapest in

March

Average price

$379

Good round-trip deal

$325 or less

Good one-way deal

$191 or less
From Philadelphia to Washington
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One-way flight from Philadelphia to Washington
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Highest demand for flights based on searches. 10% potential increase in price ($51 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($9 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 Philadelphia to Washington.
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Price to beat on a one-way flight from Philadelphia to Washington.
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Find flight deals from Philadelphia to Washington

Cheapest flights from Philadelphia to Washington
Explore the most affordable flight options available from Philadelphia to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

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.
Thu 10/236:42 amPHL - GEG
1 stop7h 26mFrontier
Thu 10/3012:03 pmGEG - PHL
1 stop13h 46mFrontier
Deal found 9/15$214
This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/296:45 amPHL - PDX
1 stop20h 27mFrontier
Fri 10/36:05 amPDX - PHL
1 stop15h 52mFrontier
Deal found 9/14$220
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.
Thu 10/236:42 amPHL - GEG
1 stop7h 26mFrontier
Sun 11/212:03 pmGEG - PHL
1 stop13h 46mFrontier
Deal found 9/15$230
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 11/36:19 amPHL - PDX
2 stops11h 12mFrontier
Sat 11/812:52 pmPDX - PHL
2 stops16h 31mFrontier
Deal found 9/13$235
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.
Fri 11/710:32 pmPHL - PDX
2 stops16h 24mFrontier
Mon 11/173:26 pmPDX - PHL
2 stops21h 24mFrontier
Deal found 9/13$237
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 11/710:32 pmPHL - PDX
2 stops16h 24mFrontier
Mon 11/103:26 pmPDX - PHL
2 stops21h 24mFrontier
Deal found 9/15$238
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/204:13 pmPHL - PDX
2 stops22h 35mFrontier
Fri 10/2412:43 pmPDX - PHL
2 stops26h 17mFrontier
Deal found 9/14$240
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/116:42 amPHL - PDX
1 stop8h 06mFrontier
Fri 10/2410:34 amPDX - PHL
2 stops15h 45mFrontier
Deal found 9/14$244
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/99:33 amPHL - PDX
2 stops29h 23mFrontier
Thu 11/1312:52 pmPDX - PHL
1 stop12h 57mFrontier
Deal found 9/14$247
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/166:42 amPHL - PDX
1 stop8h 06mFrontier
Fri 10/2410:34 amPDX - PHL
2 stops15h 45mFrontier
Deal found 9/14$250
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.
Wed 10/159:14 pmPHL - PDX
2 stops17h 34mFrontier
Fri 10/1712:43 pmPDX - PHL
1 stop13h 36mFrontier
Deal found 9/15$251
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.
Wed 10/159:14 pmPHL - PDX
2 stops17h 34mFrontier
Wed 10/2212:43 pmPDX - PHL
1 stop13h 36mFrontier
Deal found 9/15$252

Cheapflights Fare Finder

 
Customize your flight search to find flights from Philadelphia to Washington 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 16, 2025.
Use the filters below to find and compare flights from Philadelphia to Washington that are best for you.

Fly from

Philadelphia

Fly to

Washington

Route

Depart

Return

Price

PhiladelphiaPortland

PHL - PDX

PHLPDX

Philadelphia

Tue 3/3

3:15 pm-10:39 pm

1 stop10h 24m

Portland

Wed 3/4

5:55 am-5:43 pm

1 stop8h 48m

$277

PhiladelphiaPortland

PHL - PDX

PHLPDX

Philadelphia

Tue 10/7

6:29 pm-12:28 am

1 stop8h 59m

Portland

Sat 10/11

5:30 am-5:27 pm

1 stop8h 57m

$277

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Fri 11/7

7:05 am-2:45 pm

1 stop10h 40m

Seattle/Tacoma Intl

Sat 11/15

11:00 pm-9:25 am

1 stop7h 25m

$277

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Tue 11/25

7:10 am-2:54 pm

1 stop10h 44m

Seattle/Tacoma Intl

Fri 11/28

6:00 am-6:09 pm

1 stop9h 09m

$277

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Fri 11/7

7:05 am-2:45 pm

1 stop10h 40m

Seattle/Tacoma Intl

Tue 11/11

11:55 pm-10:51 am

1 stop7h 56m

$277

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Tue 10/7

6:00 am-10:33 am

1 stop7h 33m

Seattle/Tacoma Intl

Tue 10/14

6:00 am-5:55 pm

1 stop8h 55m

$277

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Fri 11/21

6:47 pm-12:11 am

1 stop8h 24m

Seattle/Tacoma Intl

Sun 11/23

11:55 pm-10:51 am

1 stop7h 56m

$277

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Tue 3/3

6:35 pm-9:47 pm

Nonstop6h 12m

Seattle/Tacoma Intl

Wed 3/4

9:15 am-5:31 pm

Nonstop5h 16m

$297

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Tue 3/3

6:35 pm-9:47 pm

Nonstop6h 12m

Seattle/Tacoma Intl

Wed 3/4

9:15 am-5:31 pm

Nonstop5h 16m

$297

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sun 11/9

7:02 am-10:13 am

Nonstop6h 11m

Seattle/Tacoma Intl

Mon 11/10

9:30 pm-5:42 am

Nonstop5h 12m

$297

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

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

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

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

Currently, January is the cheapest month in which you can book a flight from Philadelphia to State of Washington (average of $238). Flying from Philadelphia to State of Washington in June is currently the most expensive (average of $387). 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 PHL to WA?

Find hourly flight availability from Philadelphia to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

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

Weekly flight availability from Philadelphia to State of Washington

Explore weekly flight availability from Philadelphia to Washington. 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 16, 2025.

The most flights from PHL to USWA are scheduled on a Tuesday (10 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (6 on average).

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. 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 Washington. Reviews last updated September 16, 2025.
Read through reviews of airlines operating flights from Philadelphia to Washington, such as Alaska Airlines, Delta, and United Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

8.0

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

8.0

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Delta
8.0
Very good
7,957 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

8.0

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
United Airlines
7.4
Good
8,924 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

8.0

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

8.0

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Frontier
5.8
Fair
3,174 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Crew

8.5

Overall

8.0

Food

7.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why

Related info for your journey

Find useful and relevant information for your journey from Philadelphia to Washington. 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 from for flights from Philadelphia to Washington?

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

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

    This flight path from Philadelphia to Washington was viewed by 37 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    Airlines like Delta, United Airlines, and American Airlines fly from Philadelphia to State of Washington in about 8h 23m. The time it takes to get you to your destination can typically vary by up to 2h 01m. The distance from Philadelphia to State of Washington is about 2147 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    One-way options have recently been found by users for as low as $139 on Southwest. Other airlines that offer cheap prices include United Airlines from $139 and Alaska Airlines from $149 one-way.

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

    Most travelers choose Philadelphia - Seattle/Tacoma Intl, Philadelphia - Portland or Philadelphia - Spokane when deciding on the best route from Philadelphia to State of Washington.

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

    Consider Qatar Airways (74%), American Airlines (73%) or British Airways (67%) when booking your flight. These represent the most reliable airlines when flying from Philadelphia to State of Washington.

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

    Looking for the cheapest flight from Philadelphia to State of Washington? While on average our users pay $1,030, our data indicates the cheapest price to be $138. The most popular route (Philadelphia - Seattle/Tacoma Intl), is priced around $241.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Philadelphia to State of Washington (average of $238). Flying from Philadelphia to State of Washington in June is currently the most expensive (average of $387). 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.

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Alternative routes for Philadelphia to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from Philadelphia to Washington

Discover the top 9 airlines that operate flights from Philadelphia to Washington. 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 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$127Average$252FlexibilityNo cancel feeOn-time65%
FrontierCheapest$128Average$283FlexibilityNo cancel feeOn-time62%
DeltaCheapest$237Average$448FlexibilityNo cancel feeOn-timeN/A
Sun Country AirCheapest$238Average$360FlexibilityNo cancel feeOn-time83%
Hawaiian AirlinesCheapest$267Average$475FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$286Average$494FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$287Average$543FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$292Average$478FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$296Average$459FlexibilityNo cancel feeOn-time63%

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