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$129+ 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 5/25. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SEA
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$200
(CheapOair)

One-way from

$129
(Frontier)

Popular in

July

Cheapest in

March

Average price

$432

Good round-trip deal

$402 or less

Good one-way deal

$200 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. 13% potential increase in price ($67 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 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 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 May 1, 2025.

This CheapOair deal was found by Cheapflights users on 4/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/316:15 amPHL - PDX
1 stop8h 14mMultiple Airlines
Tue 6/31:37 pmPDX - PHL
1 stop13h 18mMultiple Airlines
Deal found 4/30$200
This Frontier deal was found by Cheapflights users on 4/30. 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.
Sat 5/316:15 amPHL - PDX
1 stop8h 14mFrontier
Mon 6/25:50 pmPDX - PHL
1 stop8h 20mFrontier
Deal found 4/30$208
This Cheapflightsfares deal was found by Cheapflights users on 4/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2210:48 amPHL - PDX
1 stop8h 57mSpirit Airlines
Wed 5/285:40 pmPDX - PHL
1 stop9h 21mSpirit Airlines
Deal found 4/30$209
This Mytrip deal was found by Cheapflights users on 4/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/157:45 amPHL - BLI
1 stop16h 47mMultiple Airlines
Mon 5/193:48 pmBLI - PHL
1 stop11h 13mMultiple Airlines
Deal found 4/30$278
This Delta deal was found by Cheapflights users on 4/29. 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.
Sun 6/296:30 pmPHL - SEA
1 stop7h 48mDelta
Tue 7/17:10 amSEA - PHL
1 stop7h 10mDelta
Deal found 4/29$298
This Cheapflightsfares deal was found by Cheapflights users on 4/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/176:00 pmPHL - SEA
1 stop9h 10mSpirit Airlines
Sun 5/183:20 pmSEA - PHL
2 stops17h 05mSpirit Airlines
Deal found 4/30$299
This CheapOair deal was found by Cheapflights users on 4/29. 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.
Thu 5/16:54 pmPHL - SEA
1 stop26h 08mFrontier
Sat 5/316:25 amSEA - PHL
1 stop19h 42mFrontier
Deal found 4/29$300
This Alaska Airlines deal was found by Cheapflights users on 4/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/167:20 amPHL - GEG
1 stop10h 30mAlaska Airlines
Tue 9/165:46 pmGEG - PHL
1 stop9h 14mAlaska Airlines
Deal found 4/30$301
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Tue 8/126:30 amPHL - SEA
1 stop9h 55mUnited Airlines
Tue 8/191:55 pmSEA - PHL
1 stop7h 19mUnited Airlines
Deal found 4/30$302
This Travelocity deal was found by Cheapflights users on 4/29. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/66:53 pmPHL - SEA
Nonstop6h 07mMultiple Airlines
Fri 5/96:00 amSEA - PHL
1 stop8h 37mMultiple Airlines
Deal found 4/29$305
This Hawaiian Airlines deal was found by Cheapflights users on 4/30. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/167:20 amPHL - GEG
1 stop8h 23mHawaiian Airlines
Tue 9/167:44 pmGEG - PHL
1 stop7h 16mHawaiian Airlines
Deal found 4/30$306
This Delta deal was found by Cheapflights users on 4/29. 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 6/36:00 amPHL - GEG
1 stop9h 46mDelta
Tue 6/176:50 amGEG - PHL
1 stop8h 20mDelta
Deal found 4/29$307

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 May 1, 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

Sat 5/31

6:15 am-11:29 am

1 stop8h 14m

Portland

Tue 6/3

1:37 pm-5:55 am

1 stop13h 18m

$200

PhiladelphiaPortland

PHL - PDX

PHLPDX

Philadelphia

Sat 5/31

6:15 am-11:29 am

1 stop8h 14m

Portland

Mon 6/2

5:50 pm-5:10 am

1 stop8h 20m

$208

PhiladelphiaPortland

PHL - PDX

PHLPDX

Philadelphia

Thu 5/22

10:48 am-4:45 pm

1 stop8h 57m

Portland

Wed 5/28

5:40 pm-6:01 am

1 stop9h 21m

$209

PhiladelphiaBellingham

PHL - BLI

PHLBLI

Philadelphia

Thu 5/15

7:45 am-9:32 pm

1 stop16h 47m

Bellingham

Mon 5/19

3:48 pm-6:01 am

1 stop11h 13m

$278

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sun 6/29

6:30 pm-11:18 pm

1 stop7h 48m

Seattle/Tacoma Intl

Tue 7/1

7:10 am-5:20 pm

1 stop7h 10m

$298

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sat 5/17

6:00 pm-12:10 am

1 stop9h 10m

Seattle/Tacoma Intl

Sun 5/18

3:20 pm-11:25 am

2 stops17h 05m

$299

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

Tue 9/16

7:20 am-2:50 pm

1 stop10h 30m

Spokane

Tue 9/16

5:46 pm-6:00 am

1 stop9h 14m

$301

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Tue 8/12

6:30 am-1:25 pm

1 stop9h 55m

Seattle/Tacoma Intl

Tue 8/19

1:55 pm-12:14 am

1 stop7h 19m

$302

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

Tue 9/16

7:20 am-12:43 pm

1 stop8h 23m

Spokane

Tue 9/16

7:44 pm-6:00 am

1 stop7h 16m

$306

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Wed 8/13

6:25 pm-11:25 pm

1 stop8h 00m

Seattle/Tacoma Intl

Tue 8/19

11:00 pm-9:55 am

1 stop7h 55m

$307

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

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 July is currently the most expensive (average of $405). 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 May 1, 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 May 1, 2025.

The most flights from PHL to USWA are scheduled on a Monday (7 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 on average).

Rainfall in Washington by month

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

In terms of precipitation, rainfall in State of Washington ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit State of Washington when rainfall is around 0.7 in.

Temperature in Washington by month

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

If weather is an important factor for your trip to State of Washington, 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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 May 1, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest and Delta from Philadelphia to Washington by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

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
9,972 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

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
4,294 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

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
7,934 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

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
2,408 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

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
8,696 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

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 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 30 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • 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 $129 on Frontier. Other airlines that offer cheap prices include Spirit Airlines from $140 and Alaska Airlines from $148 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 Air Tahiti Nui (85%), Alaska Airlines (83%) or Hawaiian Airlines (83%) 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 $911, our data indicates the cheapest price to be $147. The most popular route (Philadelphia - Seattle/Tacoma Intl), is priced around $168.

  • 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 July is currently the most expensive (average of $405). 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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See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Philadelphia to Washington

Discover the top 10 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$115Average$261FlexibilityNo cancel feeOn-time62%
FrontierCheapest$128Average$235FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$139Average$245FlexibilityNo cancel feeOn-time65%
Sun Country AirCheapest$199Average$315FlexibilityNo cancel feeOn-time83%
United AirlinesCheapest$287Average$508FlexibilityNo cancel feeOn-time69%
DeltaCheapest$288Average$495FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$290Average$550FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$297Average$476FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$306Average$466FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$326Average$467FlexibilityNo cancel feeOn-time63%

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