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$115+ 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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SEA
feb. 14 — feb. 211
sáb. 2/14
sáb. 2/21
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 enero 15, 2026.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$237
(Alaska Airlines)

One-way from

$115
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$342

Good round-trip deal

$321 or less

Good one-way deal

$214 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 ($65 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 enero 15, 2026.

This Alaska Airlines deal was found by Cheapflights users on 1/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 3/217:25 am
PHL
-
SEA
Nonstop6h 05m
Alaska Airlines
sáb. 3/289:55 pm
SEA
-
PHL
Nonstop5h 10m
Alaska Airlines
Deal found 1/15$237
This American Airlines deal was found by Cheapflights users on 1/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/56:50 pm
PHL
-
SEA
Nonstop6h 17m
American Airlines
mié. 2/116:12 am
SEA
-
PHL
Nonstop5h 05m
American Airlines
Deal found 1/15$238
This Kiwi.com deal was found by Cheapflights users on 1/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 2/2312:28 pm
PHL
-
SEA
2 stops25h 26m
Frontier
jue. 2/261:16 pm
SEA
-
PHL
1 stop25h 39m
Frontier
Deal found 1/14$242
This Delta deal was found by Cheapflights users on 1/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/27:00 am
PHL
-
SEA
1 stop10h 46m
Delta
mié. 5/139:50 pm
SEA
-
PHL
Nonstop5h 15m
Delta
Deal found 1/13$247
This Orbitz deal was found by Cheapflights users on 1/13. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 4/107:25 am
PHL
-
SEA
Nonstop6h 05m
Multiple Airlines
lun. 4/132:54 pm
SEA
-
PHL
1 stop11h 37m
Multiple Airlines
Deal found 1/13$249
This Kiwi.com deal was found by Cheapflights users on 1/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/28:36 pm
PHL
-
SEA
1 stop18h 54m
Frontier
lun. 4/62:54 pm
SEA
-
PHL
1 stop11h 37m
Frontier
Deal found 1/13$253
This United Airlines deal was found by Cheapflights users on 1/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 4/254:55 pm
PHL
-
GEG
1 stop8h 11m
United Airlines
mié. 4/291:43 pm
GEG
-
PHL
1 stop7h 00m
United Airlines
Deal found 1/14$257
This Kiwi.com deal was found by Cheapflights users on 1/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/15:47 pm
PHL
-
SEA
1 stop20h 32m
Frontier
dom. 3/89:35 pm
SEA
-
PHL
2 stops42h 41m
Frontier
Deal found 1/14$261
This United Airlines deal was found by Cheapflights users on 1/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/33:43 pm
PHL
-
SEA
1 stop8h 32m
United Airlines
mar. 2/1711:59 pm
SEA
-
PHL
2 stops11h 11m
United Airlines
Deal found 1/13$262
This Delta deal was found by Cheapflights users on 1/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/126:40 pm
PHL
-
SEA
1 stop8h 21m
Delta
lun. 6/19:50 pm
SEA
-
PHL
Nonstop5h 15m
Delta
Deal found 1/14$267
This Delta deal was found by Cheapflights users on 1/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 4/257:00 am
PHL
-
GEG
2 stops14h 43m
Delta
mié. 4/297:23 pm
GEG
-
PHL
2 stops10h 59m
Delta
Deal found 1/13$268
This United Airlines deal was found by Cheapflights users on 1/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/310:30 am
PHL
-
SEA
2 stops10h 44m
United Airlines
mar. 2/105:00 am
SEA
-
PHL
2 stops9h 34m
United Airlines
Deal found 1/13$268

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 enero 15, 2026.
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. 3/23

7:25 am-10:30 am

Nonstop6h 05m

Seattle/Tacoma Intl

lun. 3/30

9:55 pm-6:05 am

Nonstop5h 10m

$237

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

vie. 2/27

5:00 pm-10:43 pm

1 stop8h 43m

Seattle/Tacoma Intl

dom. 3/1

11:59 pm-10:24 am

1 stop7h 25m

$257

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

sáb. 3/14

12:26 pm-6:24 pm

1 stop8h 58m

Seattle/Tacoma Intl

mié. 3/18

6:00 am-5:59 pm

1 stop8h 59m

$257

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

jue. 2/12

12:55 pm-7:03 pm

1 stop9h 08m

Seattle/Tacoma Intl

mar. 2/17

11:59 pm-10:24 am

1 stop7h 25m

$257

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

sáb. 3/21

7:00 am-3:09 pm

1 stop11h 09m

Seattle/Tacoma Intl

mié. 3/25

6:00 am-4:33 pm

1 stop7h 33m

$257

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

vie. 3/13

6:22 pm-9:35 pm

Nonstop6h 13m

Seattle/Tacoma Intl

vie. 3/20

9:55 pm-6:05 am

Nonstop5h 10m

$257

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

sáb. 3/14

7:00 am-12:25 pm

1 stop8h 25m

Seattle/Tacoma Intl

mar. 3/17

6:00 am-4:33 pm

1 stop7h 33m

$257

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

sáb. 3/7

5:10 pm-10:41 pm

1 stop8h 31m

Seattle/Tacoma Intl

mar. 3/10

5:00 am-3:51 pm

1 stop7h 51m

$257

PhiladelphiaSeattle

PHL - SEA

PHLSEA

Philadelphia

mar. 2/3

3:01 pm-8:57 pm

1 stop8h 56m

Seattle/Tacoma Intl

mar. 2/17

11:59 pm-10:24 am

1 stop7h 25m

$257

PhiladelphiaSpokane

PHL - GEG

PHLGEG

Philadelphia

mié. 2/18

10:35 am-9:17 pm

2 stops13h 42m

Spokane

sáb. 2/21

7:00 am-5:14 pm

1 stop7h 14m

$262

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

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 July is currently the most expensive (average of $223). 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 enero 15, 2026.

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 enero 15, 2026.

The most flights from PHL to USWA are scheduled on a Wednesday (9 on average). You will have fewer flight options on Monday, 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 enero 15, 2026.
Read through reviews of airlines operating flights from Philadelphia to Washington, such as Alaska Airlines, Delta, and Hawaiian 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
11,721 reviews

Crew

8.5

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Alaska Airlines
8.0
Very good
11,721 reviews
Alaska Airlines
8.0
Very good
11,721 reviews

Crew

8.5

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Delta
7.9
Good
8,050 reviews
Alaska Airlines
8.0
Very good
11,721 reviews

Crew

8.5

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Hawaiian Airlines
7.8
Good
2,827 reviews
Alaska Airlines
8.0
Very good
11,721 reviews

Crew

8.5

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
American Airlines
7.2
Good
11,135 reviews
Alaska Airlines
8.0
Very good
11,721 reviews

Crew

8.5

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Frontier
5.7
Fair
3,057 reviews
Alaska Airlines
8.0
Very good
11,721 reviews

Crew

8.5

Entertainment

7.0

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.

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 36 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 Alaska Airlines, United Airlines, and Delta fly from Philadelphia to State of Washington in about 6h 05m. The time it takes to get you to your destination can typically vary by up to 2h 53m. 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 $85 on Frontier. Other airlines that offer cheap prices include Spirit Airlines from $91 and Delta from $114 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 Alaska Airlines (68%), Hawaiian Airlines (58%) or Air Tahiti Nui (58%) 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 $1,124, our data indicates the cheapest price to be $138. The most popular route (Philadelphia - Seattle/Tacoma Intl), is priced around $229.

  • 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 July is currently the most expensive (average of $223). 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 enero 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$106Average$237FlexibilityNo cancel feeOn-time65%
FrontierCheapest$130Average$288FlexibilityNo cancel feeOn-time62%
DeltaCheapest$168Average$427FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$173Average$463FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$236Average$462FlexibilityNo cancel feeOn-time63%
Sun Country AirCheapest$238Average$360FlexibilityNo cancel feeOn-time83%
Alaska AirlinesCheapest$257Average$526FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$276Average$489FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$277Average$454FlexibilityNo cancel feeOn-time71%

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