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$85+ 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 11/8. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SEA
Nov 23 — Nov 301
Sun 11/23
Sun 11/30
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 October 24, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$247
(United Airlines)

One-way from

$85
(Priceline)

Popular in

June

Cheapest in

October

Average price

$357

Good round-trip deal

$288 or less

Good one-way deal

$160 or less
Provider with most accurate pricing for Philadelphia-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Philadelphia-Seattle/Tacoma Intl flights.
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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. 11% potential increase in price ($53 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 24, 2025.

This United Airlines deal was found by Cheapflights users on 10/23. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/48:15 amPHL - SEA
2 stops13h 10mUnited Airlines
Tue 11/411:34 pmSEA - PHL
2 stops11h 32mUnited Airlines
Deal found 10/23$247
This Kiwi.com deal was found by Cheapflights users on 10/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/156:19 amPHL - SEA
2 stops28h 59mFrontier
Thu 11/271:01 pmSEA - PHL
1 stop12h 44mFrontier
Deal found 10/23$248
This WAYA deal was found by Cheapflights users on 10/23. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/137:12 pmPHL - SEA
Nonstop6h 18mMultiple Airlines
Wed 11/191:37 pmSEA - PHL
1 stop12h 12mMultiple Airlines
Deal found 10/23$249
This Vliegwinkel deal was found by Cheapflights users on 10/22. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/137:12 pmPHL - SEA
Nonstop6h 18mAlaska Airlines
Wed 11/199:30 pmSEA - PHL
Nonstop5h 12mAlaska Airlines
Deal found 10/22$250
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 11/76:19 amPHL - SEA
1 stop8h 54mFrontier
Thu 11/1312:58 pmSEA - PHL
1 stop12h 51mFrontier
Deal found 10/22$251
This Frontier deal was found by Cheapflights users on 10/22. 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 10/306:19 amPHL - SEA
1 stop8h 54mFrontier
Wed 11/51:37 pmSEA - PHL
1 stop12h 12mFrontier
Deal found 10/22$252
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 11/137:12 pmPHL - SEA
Nonstop6h 18mHawaiian Airlines
Wed 11/199:30 pmSEA - PHL
Nonstop5h 12mHawaiian Airlines
Deal found 10/22$253
This Kiwi.com deal was found by Cheapflights users on 10/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/77:06 amPHL - SEA
Nonstop6h 14mHawaiian Airlines
Sun 12/149:44 amSEA - PHL
Nonstop5h 09mHawaiian Airlines
Deal found 10/23$255
This Kiwi.com deal was found by Cheapflights users on 10/22. 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.
Sat 11/86:19 amPHL - SEA
2 stops31h 29mFrontier
Thu 11/1312:58 pmSEA - PHL
1 stop12h 51mFrontier
Deal found 10/22$262
This Frontier deal was found by Cheapflights users on 10/22. 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 11/206:00 amPHL - SEA
1 stop8h 56mFrontier
Sun 11/2312:46 pmSEA - PHL
1 stop12h 59mFrontier
Deal found 10/22$263
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 11/146:19 amPHL - PDX
1 stop8h 37mFrontier
Sun 11/163:26 pmPDX - PHL
1 stop10h 23mFrontier
Deal found 10/22$310
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 11/146:19 amPHL - PDX
1 stop8h 37mFrontier
Mon 11/173:26 pmPDX - PHL
2 stops16h 08mFrontier
Deal found 10/22$311

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 October 24, 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

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sat 1/10

1:25 pm-9:05 pm

2 stops10h 40m

Seattle/Tacoma Intl

Sat 1/24

5:15 am-3:40 pm

1 stop7h 25m

$249

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sat 12/6

6:20 am-11:10 am

1 stop7h 50m

Seattle/Tacoma Intl

Fri 12/12

6:35 am-6:20 pm

1 stop8h 45m

$252

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 12/4

6:54 pm-10:12 pm

Nonstop6h 18m

Seattle/Tacoma Intl

Tue 12/9

9:44 am-5:53 pm

Nonstop5h 09m

$257

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sun 3/1

6:35 pm-9:47 pm

Nonstop6h 12m

Seattle/Tacoma Intl

Sat 3/7

9:15 am-5:31 pm

Nonstop5h 16m

$257

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Thu 12/4

6:35 am-6:40 pm

1 stop15h 05m

Seattle/Tacoma Intl

Tue 12/9

6:35 am-5:20 pm

1 stop7h 45m

$257

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

Sat 1/24

5:55 am-4:10 pm

2 stops13h 15m

Spokane

Sat 1/31

11:15 am-11:08 pm

2 stops8h 53m

$277

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Wed 11/19

5:24 pm-10:23 pm

1 stop7h 59m

Seattle/Tacoma Intl

Thu 11/27

5:25 am-5:37 pm

1 stop9h 12m

$277

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Tue 11/18

7:12 pm-10:30 pm

Nonstop6h 18m

Seattle/Tacoma Intl

Sun 11/23

9:36 pm-5:47 am

Nonstop5h 11m

$277

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sat 11/22

7:10 am-2:59 pm

1 stop10h 49m

Seattle/Tacoma Intl

Thu 11/27

5:25 am-5:36 pm

1 stop9h 11m

$277

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Fri 11/21

6:14 am-10:54 am

1 stop7h 40m

Seattle/Tacoma Intl

Thu 11/27

5:25 am-5:36 pm

1 stop9h 11m

$277

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/23

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, October is the cheapest month in which you can book a flight from Philadelphia to State of Washington (average of $139). Flying from Philadelphia to State of Washington in April is currently the most expensive (average of $237). 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 October 24, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 17% on flights from Philadelphia to State of Washington by exploring options for tickets in the afternoon.

What is the cheapest day to fly from Philadelphia to State of Washington?

Use this chart to determine the cheapest time to fly round-trip from Philadelphia to Washington. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Philadelphia to State of Washington flight should consider departing on Monday evenings when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 October 24, 2025.

The most flights from PHL to USWA are scheduled on a Friday (12 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 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 October 24, 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
11,161 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

Food

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
11,161 reviews
Alaska Airlines
8.0
Very good
11,161 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

Food

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
7.9
Good
7,983 reviews
Alaska Airlines
8.0
Very good
11,161 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

Food

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
8,994 reviews
Alaska Airlines
8.0
Very good
11,161 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

Food

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
11,033 reviews
Alaska Airlines
8.0
Very good
11,161 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

Food

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
3,128 reviews
Alaska Airlines
8.0
Very good
11,161 reviews

Boarding

8.1

Comfort

7.8

Entertainment

7.0

Overall

8.0

Crew

8.5

Food

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 Southwest, Alaska Airlines, and Delta fly from Philadelphia to State of Washington in about 6h 18m. The time it takes to get you to your destination can typically vary by up to 6h 57m. The distance from Philadelphia to State of Washington is about 2370 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 $111 on Frontier. Other airlines that offer cheap prices include United Airlines from $144 and American Airlines from $145 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 American Airlines (83%), British Airways (78%) or Alaska Airlines (77%) 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 $1,290, our data indicates the cheapest price to be $114. The most popular route (Philadelphia - Seattle/Tacoma Intl), is priced around $172.

  • 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, October is the cheapest month in which you can book a flight from Philadelphia to State of Washington (average of $139). Flying from Philadelphia to State of Washington in April is currently the most expensive (average of $237). 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 October 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$127Average$252FlexibilityNo cancel feeOn-time65%
FrontierCheapest$128Average$293FlexibilityNo cancel feeOn-time62%
DeltaCheapest$234Average$439FlexibilityNo cancel feeOn-timeN/A
Sun Country AirCheapest$238Average$360FlexibilityNo cancel feeOn-time83%
Hawaiian AirlinesCheapest$257Average$474FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$277Average$542FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$277Average$439FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$286Average$494FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$294Average$464FlexibilityNo cancel feeOn-time63%

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