Washington

$82+ 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SEA
Apr 14 — Apr 211
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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 March 15, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Wed 4/156:00 pm
DCA
-
SEA
1 stop18h 27m
Frontier
Tue 4/217:12 pm
SEA
-
DCA
1 stop23h 47m
Frontier
Deal found 3/11$197
This United Airlines deal was found by Cheapflights users on 3/12. 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 4/215:55 pm
IAD
-
SEA
Nonstop5h 58m
United Airlines
Tue 4/288:00 am
SEA
-
IAD
Nonstop5h 11m
United Airlines
Deal found 3/12$198
This Kiwi.com deal was found by Cheapflights users on 3/12. 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.
Mon 4/136:00 pm
DCA
-
SEA
1 stop18h 27m
Frontier
Wed 4/158:07 pm
SEA
-
DCA
1 stop13h 53m
Frontier
Deal found 3/12$198
This Alaska Airlines deal was found by Cheapflights users on 3/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:20 pm
IAD
-
SEA
Nonstop5h 45m
Alaska Airlines
Wed 4/299:41 pm
SEA
-
IAD
Nonstop5h 09m
Alaska Airlines
Deal found 3/13$199
This Delta deal was found by Cheapflights users on 3/12. 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 4/145:34 pm
DCA
-
SEA
1 stop7h 15m
Delta
Mon 4/2010:40 pm
SEA
-
DCA
1 stop8h 39m
Delta
Deal found 3/12$199
This Southwest deal was found by Cheapflights users on 3/11. 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.
Sun 5/38:15 pm
PIT
-
SEA
1 stop6h 55m
Southwest
Tue 5/59:20 am
SEA
-
PIT
1 stop10h 35m
Southwest
Deal found 3/11$200
This Kiwi.com deal was found by Cheapflights users on 3/12. 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.
Mon 4/136:00 pm
DCA
-
SEA
1 stop18h 27m
Frontier
Sat 4/187:12 pm
SEA
-
DCA
1 stop14h 48m
Frontier
Deal found 3/12$202
This Kiwi.com deal was found by Cheapflights users on 3/11. 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.
Wed 4/156:00 pm
DCA
-
SEA
1 stop18h 27m
Frontier
Thu 4/167:12 pm
SEA
-
DCA
1 stop14h 48m
Frontier
Deal found 3/11$203
This Alaska Airlines deal was found by Cheapflights users on 3/10. 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.
Sat 4/257:10 am
IAD
-
SEA
Nonstop5h 48m
Alaska Airlines
Mon 5/43:55 pm
SEA
-
IAD
Nonstop5h 14m
Alaska Airlines
Deal found 3/10$204
This Southwest deal was found by Cheapflights users on 3/10. 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 4/2512:15 pm
DCA
-
SEA
2 stops11h 20m
Southwest
Wed 4/296:00 am
SEA
-
DCA
1 stop7h 15m
Southwest
Deal found 3/10$204
This United Airlines deal was found by Cheapflights users on 3/11. 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 4/305:55 pm
IAD
-
SEA
Nonstop5h 58m
United Airlines
Sun 5/310:41 pm
SEA
-
IAD
Nonstop5h 09m
United Airlines
Deal found 3/11$206
This Kiwi.com deal was found by Cheapflights users on 3/13. 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.
Sat 4/47:00 am
IAD
-
SEA
Nonstop5h 53m
Hawaiian Airlines
Wed 4/159:40 pm
SEA
-
IAD
Nonstop5h 00m
Hawaiian Airlines
Deal found 3/13$207

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 March 15, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$197
(Kiwi.com)

One-way from

$82
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$357

Good round-trip deal

$326 or less

Good one-way deal

$200 or less
Provider with most accurate pricing for Philadelphia-Seattle/Tacoma Intl flight deals.
Provider most trusted by Cheapflights users for Philadelphia-Seattle/Tacoma Intl flights.
From Pennsylvania to Washington
One-way flight from Pennsylvania to Washington
Highest demand for flights based on searches. 12% potential increase in price ($56 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Average for round-trip flights in March 2026
Price to beat on a round-trip flight from Pennsylvania to Washington.
Price to beat on a one-way flight from Pennsylvania to Washington.

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 March 15, 2026.
Use the filters below to find and compare flights from Pennsylvania to Washington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Tue 4/21

7:00 am-9:54 am

Nonstop5h 54m

Seattle/Tacoma Intl

Wed 4/29

3:59 pm-11:55 pm

Nonstop4h 56m

$199

PittsburghSeattle

PIT - SEA

PITSEA

Pittsburgh

Tue 4/21

7:10 pm-12:10 am

1 stop8h 00m

Seattle/Tacoma Intl

Fri 4/24

11:55 pm-10:05 am

1 stop7h 10m

$219

Washington, D.C.Seattle

IAD - SEA

IADSEA

Washington, D.C. Dulles Intl

Fri 4/17

7:00 am-9:54 am

Nonstop5h 54m

Seattle/Tacoma Intl

Mon 4/20

11:14 pm-10:18 am

1 stop8h 04m

$224

PittsburghSeattle

PIT - SEA

PITSEA

Pittsburgh

Tue 4/7

1:25 pm-10:30 pm

2 stops12h 05m

Seattle/Tacoma Intl

Tue 4/14

11:45 pm-11:50 am

2 stops9h 05m

$236

Washington, D.C.Seattle

DCA - SEA

DCASEA

Washington, D.C. Reagan-National

Tue 4/28

4:39 pm-7:30 pm

Nonstop5h 51m

Seattle/Tacoma Intl

Sun 5/3

7:30 am-3:27 pm

Nonstop4h 57m

$238

NewarkSeattle

EWR - SEA

EWRSEA

Newark

Sat 5/2

1:10 pm-4:12 pm

Nonstop6h 02m

Seattle/Tacoma Intl

Mon 5/11

7:25 am-3:49 pm

Nonstop5h 24m

$248

NewarkSeattle

EWR - SEA

EWRSEA

Newark

Thu 4/23

8:30 pm-11:46 pm

Nonstop6h 16m

Seattle/Tacoma Intl

Tue 4/28

10:55 pm-7:16 am

Nonstop5h 21m

$248
Quickest round-trip

PittsburghSeattle

PIT - SEA

PITSEA

Pittsburgh

Tue 4/28

7:17 pm-9:35 pm

Nonstop5h 18m

Seattle/Tacoma Intl

Sat 5/2

10:30 am-6:21 pm

Nonstop4h 51m

$257

NewarkSeattle

EWR - SEA

EWRSEA

Newark

Wed 4/8

3:15 pm-10:42 pm

1 stop10h 27m

Seattle/Tacoma Intl

Mon 4/13

10:55 pm-7:16 am

Nonstop5h 21m

$258

NewarkSeattle

EWR - SEA

EWRSEA

Newark

Wed 5/6

9:00 am-12:11 pm

Nonstop6h 11m

Seattle/Tacoma Intl

Tue 5/12

2:52 pm-11:29 pm

Nonstop5h 37m

$267

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/12

Showing 1-10 of 60 resultsSorted by cheapest first
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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, February is the cheapest month in which you can book a flight from Pennsylvania to State of Washington (average of $167). Flying from Pennsylvania to State of Washington in September is currently the most expensive (average of $216). 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 March 15, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Pennsylvania to State of Washington as you normally would.

Weekly flight availability from Pennsylvania to State of Washington

Explore weekly flight availability from Pennsylvania 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 March 15, 2026.

The most flights from USPA to USWA are scheduled on a Saturday (6 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 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 March 15, 2026.
Read reviews from past customers who have flown Alaska Airlines,Delta, andHawaiian 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.

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Overall

7.9

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.

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Overall

7.9

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.

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Overall

7.9

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.

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Overall

7.9

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.

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Overall

7.9

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.

Crew

8.5

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.0

Overall

7.9

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?

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

    Airlines like Delta, Southwest, and United Airlines fly from Pennsylvania to State of Washington in about 5h 54m. The time it takes to get you to your destination can typically vary by up to 2h 06m. The distance between Pennsylvania and State of Washington is about 2299 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Pennsylvania to State of Washington one-way?

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $89. Users have also found prices from $91 and $97 on Spirit Airlines and Southwest, respectively.

  • 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, February is the cheapest month in which you can book a flight from Pennsylvania to State of Washington (average of $167). Flying from Pennsylvania to State of Washington in September is currently the most expensive (average of $216). 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

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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.

Top 8 airlines flying from Pennsylvania to Washington

Discover the top 8 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 March 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$99Average$226FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$115Average$237FlexibilityNo cancel feeOn-time65%
DeltaCheapest$123Average$405FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$157Average$431FlexibilityNo cancel feeOn-time63%
Hawaiian AirlinesCheapest$176Average$436FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$178Average$491FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$180Average$510FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$221Average$507FlexibilityNo cancel feeOn-time69%

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