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$92+ 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 1/1. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SEA
dic. 26 — ene. 21
vie. 12/26
vie. 1/2
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 noviembre 26, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$257
(Delta)

One-way from

$92
(Frontier)

Popular in

June

Cheapest in

October

Average price

$422

Good round-trip deal

$356 or less

Good one-way deal

$240 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. 12% potential increase in price ($58 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 November 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 noviembre 26, 2025.

This American Airlines deal was found by Cheapflights users on 11/23. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/146:35 pmPHL - SEA
Nonstop6h 15mAmerican Airlines
mar. 1/136:12 amSEA - PHL
Nonstop5h 05mAmerican Airlines
Deal found 11/23$257
This CheapOair deal was found by Cheapflights users on 11/25. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/188:36 pmPHL - SEA
1 stop18h 54mFrontier
mar. 12/306:33 pmSEA - PHL
1 stop8h 07mFrontier
Deal found 11/25$258
This Kiwi.com deal was found by Cheapflights users on 11/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/128:36 pmPHL - SEA
1 stop18h 17mFrontier
dom. 12/212:54 pmSEA - PHL
2 stops17h 14mFrontier
Deal found 11/24$263
This Justfly.com deal was found by Cheapflights users on 11/25. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/317:10 amPHL - SEA
1 stop9h 41mFrontier
jue. 1/812:26 pmSEA - PHL
1 stop20h 20mFrontier
Deal found 11/25$264
This American Airlines deal was found by Cheapflights users on 11/24. 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.
jue. 12/186:40 pmPHL - SEA
Nonstop6h 19mAmerican Airlines
mar. 1/136:12 amSEA - PHL
Nonstop5h 05mAmerican Airlines
Deal found 11/24$267
This Kiwi.com deal was found by Cheapflights users on 11/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/58:36 pmPHL - SEA
1 stop18h 17mMultiple Airlines
lun. 12/811:01 amSEA - PHL
2 stops24h 43mMultiple Airlines
Deal found 11/24$270
This United Airlines deal was found by Cheapflights users on 11/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/1612:45 pmPHL - SEA
1 stop9h 37mUnited Airlines
mié. 12/178:10 amSEA - PHL
1 stop7h 58mUnited Airlines
Deal found 11/25$272
This Kiwi.com deal was found by Cheapflights users on 11/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/208:36 pmPHL - SEA
1 stop18h 54mFrontier
mar. 1/61:00 pmSEA - PHL
2 stops40h 37mFrontier
Deal found 11/25$274
This Alaska Airlines deal was found by Cheapflights users on 11/24. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/187:00 amPHL - SEA
Nonstop6h 04mAlaska Airlines
mar. 12/309:29 pmSEA - PHL
Nonstop5h 08mAlaska Airlines
Deal found 11/24$277
This CheapOair deal was found by Cheapflights users on 11/26. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/187:10 amPHL - SEA
1 stop30h 01mFrontier
lun. 12/222:54 pmSEA - PHL
1 stop11h 37mFrontier
Deal found 11/26$278
This United Airlines deal was found by Cheapflights users on 11/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/155:07 pmPHL - SEA
1 stop8h 21mUnited Airlines
mar. 12/167:34 pmSEA - PHL
2 stops11h 01mUnited Airlines
Deal found 11/24$282
This Kiwi.com deal was found by Cheapflights users on 11/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/58:36 pmPHL - SEA
1 stop18h 17mMultiple Airlines
jue. 12/1111:01 amSEA - PHL
2 stops19h 16mMultiple Airlines
Deal found 11/24$283

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 noviembre 26, 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

lun. 1/12

8:35 am-3:44 pm

1 stop10h 09m

Seattle/Tacoma Intl

jue. 1/15

7:00 am-5:34 pm

1 stop7h 34m

$257

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

jue. 1/8

5:17 pm-9:49 pm

1 stop7h 32m

Seattle/Tacoma Intl

lun. 1/12

11:10 pm-11:53 am

1 stop9h 43m

$257

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

mar. 2/3

2:30 pm-11:15 pm

1 stop11h 45m

Seattle/Tacoma Intl

mar. 2/10

11:10 pm-8:50 am

1 stop6h 40m

$257

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

vie. 2/20

6:20 pm-12:59 am

1 stop9h 39m

Seattle/Tacoma Intl

lun. 2/23

9:19 am-9:33 pm

1 stop9h 14m

$267

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

sáb. 1/10

5:50 am-11:00 am

1 stop8h 10m

Seattle/Tacoma Intl

lun. 1/12

6:05 am-4:20 pm

1 stop7h 15m

$277

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

dom. 12/14

6:00 am-10:40 am

1 stop7h 40m

Seattle/Tacoma Intl

mar. 1/13

6:15 am-7:41 pm

1 stop10h 26m

$277

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

mar. 2/17

6:50 pm-12:09 am

1 stop8h 19m

Seattle/Tacoma Intl

vie. 2/20

6:10 am-5:56 pm

1 stop8h 46m

$277

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

vie. 2/20

6:50 pm-12:09 am

1 stop8h 19m

Seattle/Tacoma Intl

lun. 2/23

11:15 pm-11:43 am

1 stop9h 28m

$277

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

dom. 1/25

4:59 pm-11:15 pm

1 stop9h 16m

Seattle/Tacoma Intl

mié. 1/28

6:15 am-5:42 pm

1 stop8h 27m

$277

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

jue. 1/22

9:40 am-2:21 pm

1 stop7h 41m

Seattle/Tacoma Intl

lun. 1/26

11:10 pm-8:50 am

1 stop6h 40m

$277

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/25

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 $148). 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 noviembre 26, 2025.

Unlike in the evening, when flights are generally more expensive, you can save up to 18% 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. Sunday evenings 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 noviembre 26, 2025.

The most flights from PHL to USWA are scheduled on a Monday (12 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (2 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 noviembre 26, 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
11,354 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Marcie,Nov 2025

PIT - SEA

It was not a full flight, so I was able to enjoy a row to myself. Luck of the draw, I guess.
Alaska Airlines
8.0
Very good
11,354 reviews
Alaska Airlines
8.0
Very good
11,354 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Marcie,Nov 2025

PIT - SEA

It was not a full flight, so I was able to enjoy a row to myself. Luck of the draw, I guess.
Delta
7.9
Good
7,998 reviews
Alaska Airlines
8.0
Very good
11,354 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Marcie,Nov 2025

PIT - SEA

It was not a full flight, so I was able to enjoy a row to myself. Luck of the draw, I guess.
United Airlines
7.4
Good
9,046 reviews
Alaska Airlines
8.0
Very good
11,354 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Marcie,Nov 2025

PIT - SEA

It was not a full flight, so I was able to enjoy a row to myself. Luck of the draw, I guess.
American Airlines
7.2
Good
11,038 reviews
Alaska Airlines
8.0
Very good
11,354 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Marcie,Nov 2025

PIT - SEA

It was not a full flight, so I was able to enjoy a row to myself. Luck of the draw, I guess.
Frontier
5.8
Fair
3,099 reviews
Alaska Airlines
8.0
Very good
11,354 reviews

Comfort

7.8

Crew

8.5

Entertainment

7.0

Overall

8.0

Boarding

8.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Marcie,Nov 2025

PIT - SEA

It was not a full flight, so I was able to enjoy a row to myself. Luck of the draw, I guess.

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 United Airlines, Delta, and Alaska Airlines fly from Philadelphia to State of Washington in about 7h 32m. The time it takes to get you to your destination can typically vary by up to 2h 37m. 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 $92 on Frontier. Other airlines that offer cheap prices include Alaska Airlines from $144 and United Airlines from $144 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 (80%), Air Tahiti Nui (78%) or Alaska Airlines (70%) 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 $1,066, our data indicates the cheapest price to be $143. The most popular route (Philadelphia - Seattle/Tacoma Intl), is priced around $242.

  • 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 $148). 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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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 noviembre 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$127Average$250FlexibilityNo cancel feeOn-time65%
FrontierCheapest$134Average$295FlexibilityNo cancel feeOn-time62%
DeltaCheapest$227Average$435FlexibilityNo cancel feeOn-timeN/A
Sun Country AirCheapest$238Average$365FlexibilityNo cancel feeOn-time83%
Hawaiian AirlinesCheapest$257Average$474FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$276Average$509FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$277Average$542FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$277Average$464FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$296Average$464FlexibilityNo cancel feeOn-time63%

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