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$98+ Cheap flights from Pennsylvania 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 1/16. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SEA
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Pennsylvania to Washington

Cheapest flights from Pennsylvania to Washington
Explore the most affordable flight options available from Pennsylvania to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This Alaska Airlines deal was found by Cheapflights users on 12/16. 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.
Thu 12/257:09 amEWR - SEA
Nonstop6h 27mAlaska Airlines
Tue 1/68:19 amSEA - EWR
Nonstop5h 26mAlaska Airlines
Deal found 12/16$292
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 12/257:09 amEWR - SEA
Nonstop6h 27mAlaska Airlines
Thu 12/2510:39 pmSEA - EWR
Nonstop5h 20mAlaska Airlines
Deal found 12/16$301
This Alaska Airlines deal was found by Cheapflights users on 12/16. 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.
Thu 12/255:45 pmEWR - SEA
Nonstop6h 06mAlaska Airlines
Sun 12/284:49 pmSEA - EWR
1 stop10h 10mAlaska Airlines
Deal found 12/16$302
This CheapOair deal was found by Cheapflights users on 12/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/197:10 amPHL - SEA
1 stop31h 21mFrontier
Mon 1/52:54 pmSEA - PHL
1 stop11h 37mFrontier
Deal found 12/15$304
This CheapOair deal was found by Cheapflights users on 12/16. 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 12/208:36 pmPHL - SEA
1 stop18h 54mFrontier
Mon 12/292:54 pmSEA - PHL
1 stop11h 37mFrontier
Deal found 12/16$305
This CheapOair deal was found by Cheapflights users on 12/16. 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.
Tue 12/306:00 pmDCA - SEA
1 stop21h 30mFrontier
Mon 1/52:54 pmSEA - DCA
1 stop19h 08mFrontier
Deal found 12/16$313
This CheapOair deal was found by Cheapflights users on 12/16. 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.
Tue 12/306:00 pmDCA - SEA
1 stop21h 30mFrontier
Tue 1/61:00 pmSEA - DCA
1 stop29h 59mFrontier
Deal found 12/16$314
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Thu 12/253:24 pmEWR - SEA
1 stop10h 23mUnited Airlines
Tue 1/67:00 amSEA - EWR
Nonstop5h 19mUnited Airlines
Deal found 12/17$330
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Wed 12/316:00 amEWR - SEA
1 stop8h 27mUnited Airlines
Wed 1/75:12 pmSEA - EWR
1 stop9h 33mUnited Airlines
Deal found 12/17$332
This Booking.com deal was found by Cheapflights users on 12/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/197:10 amPHL - SEA
1 stop31h 21mFrontier
Sun 1/42:54 pmSEA - PHL
1 stop11h 37mFrontier
Deal found 12/15$332
This CheapOair deal was found by Cheapflights users on 12/16. 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 12/208:36 pmPHL - SEA
1 stop18h 54mFrontier
Sat 1/32:54 pmSEA - PHL
1 stop11h 37mFrontier
Deal found 12/16$334
This CheapOair deal was found by Cheapflights users on 12/16. 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.
Mon 12/228:00 amDCA - PDX
1 stop30h 43mFrontier
Thu 12/2512:47 pmPDX - DCA
1 stop21h 14mFrontier
Deal found 12/16$338

Find flight deals from Pennsylvania to Washington

Keep the following information in mind while searching for Pennsylvania to Washington flight deals. Data was last updated December 18, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$209
(Delta)

One-way from

$98
(Trip.com)

Popular in

June

Cheapest in

October

Average price

$497

Good round-trip deal

$316 or less

Good one-way deal

$228 or less
Provider with most accurate pricing for Philadelphia-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Philadelphia-Seattle/Tacoma Intl flights.
Search Deals
From Pennsylvania to Washington
Search Deals
One-way flight from Pennsylvania to Washington
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($62 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Pennsylvania to Washington.
Search Deals
Price to beat on a one-way flight from Pennsylvania to Washington.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Pennsylvania 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 December 18, 2025.
Use the filters below to find and compare flights from Pennsylvania to Washington that are best for you.

Fly from

Pennsylvania

Fly to

Washington

Route

Depart

Return

Price

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Wed 1/14

7:30 am-10:29 am

Nonstop5h 59m

Seattle/Tacoma Intl

Tue 1/20

11:10 pm-11:52 am

1 stop9h 42m

$209

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Wed 1/28

7:30 am-10:29 am

Nonstop5h 59m

Seattle/Tacoma Intl

Wed 2/4

7:10 am-7:09 pm

1 stop8h 59m

$209

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Fri 1/30

7:30 am-10:29 am

Nonstop5h 59m

Seattle/Tacoma Intl

Fri 2/6

12:00 pm-11:57 pm

1 stop8h 57m

$209

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Wed 2/25

12:23 pm-8:00 pm

1 stop10h 37m

Seattle/Tacoma Intl

Fri 3/6

3:20 pm-11:10 pm

Nonstop4h 50m

$209

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Thu 1/22

7:00 am-2:45 pm

1 stop10h 45m

Seattle/Tacoma Intl

Sun 1/25

3:20 pm-11:10 pm

Nonstop4h 50m

$209

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Wed 2/4

7:30 am-10:29 am

Nonstop5h 59m

Seattle/Tacoma Intl

Sun 2/8

6:05 am-4:46 pm

1 stop7h 41m

$209

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Sat 2/21

4:44 pm-7:43 pm

Nonstop5h 59m

Seattle/Tacoma Intl

Wed 2/25

8:30 am-6:59 pm

1 stop7h 29m

$209

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Fri 1/30

4:44 pm-7:43 pm

Nonstop5h 59m

Seattle/Tacoma Intl

Wed 2/4

6:05 am-5:04 pm

1 stop7h 59m

$209

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Wed 1/21

4:44 pm-7:43 pm

Nonstop5h 59m

Seattle/Tacoma Intl

Sat 1/31

11:10 pm-8:53 am

1 stop6h 43m

$209

NewarkSeattle

EWR - SEA

EWRSEA

Newark

Wed 3/18

7:49 am-11:10 am

Nonstop6h 21m

Seattle/Tacoma Intl

Wed 3/25

5:00 am-5:23 pm

1 stop9h 23m

$218

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Showing 1-10 of 60 results
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Best time to book a flight from Pennsylvania to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Pennsylvania 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 Pennsylvania to Washington

What is the cheapest month to book a flight from Pennsylvania to State of Washington?

Currently, March is the cheapest month in which you can book a flight from Pennsylvania to State of Washington (average of $157). Flying from Pennsylvania to State of Washington in June is currently the most expensive (average of $245). 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 PA to WA?

Find hourly flight availability from Pennsylvania 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 December 18, 2025.

When flying from Pennsylvania to State of Washington, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 34% versus a flight in the morning.

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

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

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

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 December 18, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta, and Hawaiian Airlines from Pennsylvania to Washington. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,477 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

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
11,477 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

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
8,005 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

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
2,820 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

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.
United Airlines
7.4
Good
9,091 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

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
11,054 reviews
Alaska Airlines
8.0
Very good
11,477 reviews

Food

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Entertainment

7.0

Boarding

8.1

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 Pennsylvania to Washington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Pennsylvania to State of Washington flight route?

    Within the past month, 35 users have taken a look at flights from Pennsylvania to Washington.

  • How long is the flight from Pennsylvania to State of Washington?

    Airlines like Delta, United Airlines, and Alaska Airlines fly from Pennsylvania to State of Washington in about 5h 59m. The time it takes to get you to your destination is usually consistent. The distance between Pennsylvania and State of Washington is about 2299 mi. Generally, flights for this route are nonstop.

  • Can I find deals for flights from Pennsylvania to Washington that include hotel bookings?

    Yes. In addition to deals on Pennsylvania to Washington flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Pennsylvania to Washington?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Pennsylvania to Washington.

  • Can I find deals for business class flights from Pennsylvania to Washington?

    Yes. Cheapflights offers flight deals from Pennsylvania 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 Pennsylvania to State of Washington?

    Currently, March is the cheapest month in which you can book a flight from Pennsylvania to State of Washington (average of $157). Flying from Pennsylvania to State of Washington in June is currently the most expensive (average of $245). 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 Pennsylvania 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 Pennsylvania to Washington

Discover the top 9 airlines that operate flights from Pennsylvania 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$99Average$257FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$115Average$249FlexibilityNo cancel feeOn-time65%
SouthwestCheapest$157Average$444FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$178Average$505FlexibilityNo cancel feeOn-time71%
DeltaCheapest$190Average$440FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$232Average$530FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$235Average$447FlexibilityNo cancel feeOn-time85%
Sun Country AirCheapest$238Average$366FlexibilityNo cancel feeOn-time83%
Alaska AirlinesCheapest$255Average$533FlexibilityNo cancel feeOn-time75%

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