HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Washington

$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 8/7. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SEA
Jul 1 — Jul 81
Tue 7/1
Tue 7/8
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Philadelphia to Washington with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 June 26, 2025.

Round-trip from

$290
(Delta)

One-way from

$139
(Mytrip)

Popular in

June

Cheapest in

March

Average price

$526

Good round-trip deal

$381 or less

Good one-way deal

$203 or less
From Philadelphia to Washington
Search Deals
One-way flight from Philadelphia to Washington
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($50 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals
Price to beat on a round-trip flight from Philadelphia to Washington.
Search Deals
Price to beat on a one-way flight from Philadelphia to Washington.
Search Deals

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 June 26, 2025.

This Priceline deal was found by Cheapflights users on 6/26. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/296:15 amPHL - GEG
1 stop7h 48mFrontier
Thu 7/1011:58 amGEG - PHL
1 stop7h 11mFrontier
Deal found 6/26$259
This Delta deal was found by Cheapflights users on 6/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/82:40 pmPHL - PDX
1 stop10h 52mDelta
Sat 10/115:55 amPDX - PHL
1 stop8h 51mDelta
Deal found 6/25$290
This FlightHub deal was found by Cheapflights users on 6/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/116:15 amPHL - PDX
1 stop21h 00mFrontier
Tue 7/157:01 pmPDX - PHL
1 stop7h 08mFrontier
Deal found 6/24$296
This FlightHub deal was found by Cheapflights users on 6/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/256:19 amPHL - PDX
1 stop20h 57mMultiple Airlines
Sun 9/282:35 pmPDX - PHL
1 stop11h 57mMultiple Airlines
Deal found 6/26$300
This Delta deal was found by Cheapflights users on 6/24. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/105:30 amPHL - SEA
1 stop9h 39mDelta
Fri 8/295:30 amSEA - PHL
1 stop7h 20mDelta
Deal found 6/24$305
This Southwest deal was found by Cheapflights users on 6/25. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/302:20 pmPHL - SEA
1 stop8h 35mSouthwest
Sun 9/711:10 pmSEA - PHL
1 stop8h 25mSouthwest
Deal found 6/25$306
This Cheapflightsfares deal was found by Cheapflights users on 6/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/116:30 amPHL - PDX
1 stop10h 00mSpirit Airlines
Sun 9/142:35 pmPDX - PHL
1 stop11h 57mSpirit Airlines
Deal found 6/25$307
This American Airlines deal was found by Cheapflights users on 6/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/127:10 pmPHL - SEA
Nonstop6h 16mAmerican Airlines
Tue 8/1910:50 pmSEA - PHL
Nonstop5h 10mAmerican Airlines
Deal found 6/26$307
This FlightHub deal was found by Cheapflights users on 6/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/96:15 amPHL - SEA
1 stop20h 27mFrontier
Fri 7/186:25 amSEA - PHL
1 stop19h 44mFrontier
Deal found 6/24$309
This Alaska Airlines deal was found by Cheapflights users on 6/25. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/266:58 pmPHL - SEA
Nonstop6h 02mAlaska Airlines
Wed 9/39:45 pmSEA - PHL
Nonstop5h 15mAlaska Airlines
Deal found 6/25$312
This FlightHub deal was found by Cheapflights users on 6/25. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/146:22 pmPHL - SEA
1 stop25h 03mSpirit Airlines
Thu 7/175:30 pmSEA - PHL
1 stop20h 57mSpirit Airlines
Deal found 6/25$316
This FlightHub deal was found by Cheapflights users on 6/24. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/156:15 amPHL - SEA
1 stop20h 27mMultiple Airlines
Sun 7/205:30 pmSEA - PHL
1 stop20h 57mMultiple Airlines
Deal found 6/24$319

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 June 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

PhiladelphiaPortland

PHL - PDX

PHLPDX

Philadelphia

Wed 10/8

2:40 pm-10:32 pm

1 stop10h 52m

Portland

Sat 10/11

5:55 am-5:46 pm

1 stop8h 51m

$290

PhiladelphiaPortland

PHL - PDX

PHLPDX

Philadelphia

Fri 7/11

6:15 am-12:15 am

1 stop21h 00m

Portland

Tue 7/15

7:01 pm-5:09 am

1 stop7h 08m

$296

PhiladelphiaPortland

PHL - PDX

PHLPDX

Philadelphia

Thu 9/25

6:19 am-12:16 am

1 stop20h 57m

Portland

Sun 9/28

2:35 pm-5:32 am

1 stop11h 57m

$300

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sun 8/10

5:30 am-12:09 pm

1 stop9h 39m

Seattle/Tacoma Intl

Fri 8/29

5:30 am-3:50 pm

1 stop7h 20m

$305

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Sat 8/30

4:10 pm-9:50 pm

1 stop8h 40m

Seattle/Tacoma Intl

Wed 9/10

5:35 am-4:00 pm

1 stop7h 25m

$306

PhiladelphiaPortland

PHL - PDX

PHLPDX

Philadelphia

Thu 9/11

6:30 am-1:30 pm

1 stop10h 00m

Portland

Sun 9/14

2:35 pm-5:32 am

1 stop11h 57m

$307

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Tue 8/12

7:10 pm-10:26 pm

Nonstop6h 16m

Seattle/Tacoma Intl

Fri 8/22

9:45 pm-5:58 am

Nonstop5h 13m

$307

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Wed 7/9

6:15 am-11:42 pm

1 stop20h 27m

Seattle/Tacoma Intl

Fri 7/18

6:25 am-5:09 am

1 stop19h 44m

$309

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Tue 8/26

6:58 pm-10:00 pm

Nonstop6h 02m

Seattle/Tacoma Intl

Wed 9/3

9:45 pm-6:00 am

Nonstop5h 15m

$312

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

Mon 7/14

6:22 pm-4:25 pm

1 stop25h 03m

Seattle/Tacoma Intl

Thu 7/17

5:30 pm-5:27 pm

1 stop20h 57m

$316

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/25

Showing 1-10 of 60 results
1
2
3
...
6

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 $391). 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 June 26, 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 June 26, 2025.

The most flights from PHL to USWA are scheduled on a Thursday (12 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (5 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 June 26, 2025.
Read through reviews of airlines operating flights from Philadelphia to Washington, such as Alaska Airlines, Southwest, and Delta. 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

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.8

Food

7.1

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

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.8

Food

7.1

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
4,276 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.8

Food

7.1

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
7,963 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,522 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.8

Food

7.1

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
8,838 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Boarding

8.1

Crew

8.5

Overall

8.0

Comfort

7.8

Food

7.1

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 35 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 $139 on Spirit Airlines. Other airlines that offer cheap prices include Frontier from $142 and Southwest 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 (78%), Air Tahiti Nui (75%) or Finnair (71%) 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 $1,006, our data indicates the cheapest price to be $148. The most popular route (Philadelphia - Seattle/Tacoma Intl), is priced around $257.

  • 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 $391). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Philadelphia to Washington

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Miami flights
Newark to Fort Lauderdale flights
LaGuardia to Fort Lauderdale flights
Newark to Miami flights
Newark to Seattle flights
John F Kennedy Intl to O'Hare Intl flights
John F Kennedy Intl to Orlando flights
John F Kennedy Intl to Seattle flights
LaGuardia to Atlanta flights
Newark to O'Hare Intl flights
Newark to Los Angeles flights
LaGuardia to Miami flights
LaGuardia to Dallas/Fort Worth flights
John F Kennedy Intl to Las Vegas flights
Newark to Orlando flights
John F Kennedy Intl to Fort Lauderdale flights
LaGuardia to O'Hare Intl flights
John F Kennedy Intl to San Francisco flights
John F Kennedy Intl to Atlanta flights
Newark to Las Vegas flights
John F Kennedy Intl to Los Angeles flights
LaGuardia to Orlando flights
Newark to Atlanta flights
Newark to San Francisco flights
Dulles Intl to Seattle flights
John F Kennedy Intl to West Palm Beach flights
LaGuardia to Los Angeles flights
LaGuardia to Seattle flights
John F Kennedy Intl to Dallas/Fort Worth flights
LaGuardia to Las Vegas flights
Dulles Intl to Los Angeles flights
Reagan-National to Seattle flights
Reagan-National to Boston flights
John F Kennedy Intl to Honolulu flights
Newark to Denver flights
Newark to Midway flights
John F Kennedy Intl to Hobby flights
Reagan-National to Los Angeles flights
Dulles Intl to Dallas/Fort Worth flights
Reagan-National to O'Hare Intl flights
Reagan-National to Miami flights
John F Kennedy Intl to Midway flights
Dulles Intl to Las Vegas flights
John F Kennedy Intl to Ontario flights
Philadelphia to Orlando flights
John F Kennedy Intl to Denver flights
LaGuardia to Hobby flights
Newark to Dallas/Fort Worth flights
LaGuardia to Denver flights
Philadelphia to O'Hare Intl flights

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 June 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$128Average$239FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$136Average$255FlexibilityNo cancel feeOn-time65%
Sun Country AirCheapest$198Average$365FlexibilityNo cancel feeOn-time83%
DeltaCheapest$280Average$450FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$286Average$495FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$295Average$547FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$297Average$492FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$299Average$469FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$326Average$460FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.