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$91+ Cheap flights from Pennsylvania to Seattle (SEA)

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 8/13. Fares are subject to change and may not be available on all flights or dates of travel.
PHL — SEA
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Pennsylvania to Seattle

Keep the following information in mind while searching for Pennsylvania to Seattle flight deals. Data was last updated June 12, 2025.

Round-trip from

$246
(Southwest)

One-way from

$91
(American Airlines)

Popular in

June

Cheapest in

March

Average price

$517

Good round-trip deal

$367 or less

Good one-way deal

$213 or less
From Pennsylvania to Seattle/Tacoma Intl
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One-way flight from Pennsylvania to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 10% potential increase in price ($49 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Price to beat on a round-trip flight from Pennsylvania to Seattle/Tacoma Intl.
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Price to beat on a one-way flight from Pennsylvania to Seattle/Tacoma Intl.
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Find flight deals from Pennsylvania to Seattle

Cheapest flights from Pennsylvania to Seattle
Explore the most affordable flight options available from Pennsylvania to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/123:06 pmPIT - SEA
1 stop7h 53mAmerican Airlines
Mon 9/156:42 amSEA - PIT
1 stop7h 55mAmerican Airlines
Deal found 6/11$246
This Southwest deal was found by Cheapflights users on 6/10. 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.
Tue 7/295:50 pmPIT - SEA
1 stop9h 40mSouthwest
Wed 8/611:10 pmSEA - PIT
2 stops10h 00mSouthwest
Deal found 6/10$251
This American Airlines deal was found by Cheapflights users on 6/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/23:12 pmSCE - SEA
1 stop10h 14mAmerican Airlines
Tue 9/911:05 pmSEA - SCE
1 stop9h 57mAmerican Airlines
Deal found 6/12$251
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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.
Tue 9/97:42 pmPIT - SEA
Nonstop5h 12mAlaska Airlines
Tue 9/911:10 pmSEA - PIT
Nonstop4h 38mAlaska Airlines
Deal found 6/10$252
This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/235:59 amLGA - SEA
2 stops13h 26mSpirit Airlines
Mon 7/285:30 pmSEA - LGA
2 stops19h 05mSpirit Airlines
Deal found 6/11$254
This Alaska Airlines deal was found by Cheapflights users on 6/12. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/215:29 pmJFK - SEA
1 stop8h 32mAlaska Airlines
Wed 10/298:00 amSEA - JFK
1 stop11h 59mAlaska Airlines
Deal found 6/12$256
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/116:00 pmDCA - SEA
1 stop9h 31mFrontier
Tue 10/216:00 amSEA - DCA
1 stop8h 01mFrontier
Deal found 6/10$256
This JetBlue deal was found by Cheapflights users on 6/12. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/236:50 pmJFK - SEA
Nonstop6h 20mJetBlue
Mon 10/2711:59 pmSEA - JFK
Nonstop5h 13mJetBlue
Deal found 6/12$257
This Hawaiian Airlines deal was found by Cheapflights users on 6/10. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/237:42 pmPIT - SEA
Nonstop5h 12mHawaiian Airlines
Tue 8/2611:06 amSEA - PIT
Nonstop4h 36mHawaiian Airlines
Deal found 6/10$257
This American Airlines deal was found by Cheapflights users on 6/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/57:00 pmLGA - SEA
1 stop8h 43mAmerican Airlines
Mon 8/2512:45 amSEA - LGA
1 stop7h 44mAmerican Airlines
Deal found 6/10$257
This American Airlines deal was found by Cheapflights users on 6/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/217:00 amDCA - SEA
1 stop8h 33mAmerican Airlines
Sun 11/211:45 amSEA - DCA
1 stop7h 15mAmerican Airlines
Deal found 6/10$257
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/237:13 pmPIT - SEA
1 stop7h 21mDelta
Wed 12/36:05 amSEA - PIT
1 stop9h 25mDelta
Deal found 6/10$258

Cheapflights Fare Finder

Customize your flight search to find flights from Pennsylvania to Seattle 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 12, 2025.
Use the filters below to find and compare flights from Pennsylvania to Seattle that are best for you.

Fly from

Pennsylvania

Fly to

Seattle

Route

Depart

Return

Price

PittsburghSeattle

PIT - SEA

PITSEA

Pittsburgh

Fri 8/1

7:10 pm-12:30 am

1 stop8h 20m

Seattle/Tacoma Intl

Wed 8/6

1:10 pm-10:45 pm

1 stop6h 35m

$246

PittsburghSeattle

PIT - SEA

PITSEA

Pittsburgh

Thu 8/21

7:40 pm-12:54 am

1 stop8h 14m

Seattle/Tacoma Intl

Sat 8/23

5:35 am-4:04 pm

1 stop7h 29m

$248

PittsburghSeattle

PIT - SEA

PITSEA

Pittsburgh

Tue 9/9

7:42 pm-9:54 pm

Nonstop5h 12m

Seattle/Tacoma Intl

Tue 9/9

11:10 pm-6:48 am

Nonstop4h 38m

$252

New YorkSeattle

LGA - SEA

LGASEA

New York LaGuardia

Wed 7/23

5:59 am-4:25 pm

2 stops13h 26m

Seattle/Tacoma Intl

Mon 7/28

5:30 pm-3:35 pm

2 stops19h 05m

$254

New YorkSeattle

JFK - SEA

JFKSEA

New York John F Kennedy Intl

Tue 10/21

5:29 pm-11:01 pm

1 stop8h 32m

Seattle/Tacoma Intl

Wed 10/29

8:00 am-10:59 pm

1 stop11h 59m

$256

State CollegeSeattle

SCE - SEA

SCESEA

State College University Park

Wed 10/29

4:57 pm-9:44 pm

1 stop7h 47m

Seattle/Tacoma Intl

Sat 11/1

10:40 pm-12:41 pm

2 stops11h 01m

$256

New YorkSeattle

JFK - SEA

JFKSEA

New York John F Kennedy Intl

Thu 10/23

6:50 pm-10:10 pm

Nonstop6h 20m

Seattle/Tacoma Intl

Mon 10/27

11:59 pm-8:12 am

Nonstop5h 13m

$257

PittsburghSeattle

PIT - SEA

PITSEA

Pittsburgh

Sat 8/23

7:42 pm-9:54 pm

Nonstop5h 12m

Seattle/Tacoma Intl

Tue 8/26

11:06 am-6:42 pm

Nonstop4h 36m

$257

New YorkSeattle

LGA - SEA

LGASEA

New York LaGuardia

Tue 8/5

7:00 pm-12:43 am

1 stop8h 43m

Seattle/Tacoma Intl

Mon 8/25

12:45 am-11:29 am

1 stop7h 44m

$257

PittsburghSeattle

PIT - SEA

PITSEA

Pittsburgh

Tue 7/1

5:18 pm-11:19 pm

1 stop9h 01m

Seattle/Tacoma Intl

Thu 7/10

5:30 am-4:24 pm

1 stop7h 54m

$258

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

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

Have a flexible travel schedule? Discover the best time to fly to Seattle 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 Seattle

What is the cheapest month to book a flight from Pennsylvania to Seattle?

Currently, January is the cheapest month in which you can book a flight from Pennsylvania to Seattle (average of $238). Flying from Pennsylvania to Seattle 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 PA to SEA?

Find hourly flight availability from Pennsylvania to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

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

Weekly flight availability from Pennsylvania to Seattle

Explore weekly flight availability from Pennsylvania to Seattle. 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 12, 2025.

The most flights from USPA to SEA are scheduled on a Thursday (11 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (5 on average).

Rainfall in Seattle by month

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

In terms of precipitation, rainfall in Seattle 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 Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

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

If weather is an important factor for your trip to Seattle, 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 Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated June 12, 2025.
To help decide which airline to fly from Pennsylvania to Seattle, see what other customers have to say about Alaska Airlines, Southwest and Delta. 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
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

Find useful and relevant information for your journey from Pennsylvania to Seattle. 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 into for flights to Seattle from Pennsylvania?

    Seattle/Tacoma Intl (SEA) is the airport you will fly into if you book a flight from Pennsylvania to Seattle. It is only a 11.4 mi journey from Seattle/Tacoma Intl (SEA) to Seattle’s city center.

  • How popular is this Pennsylvania to Seattle flight route?

    Within the past month, 35 users have taken a look at flights from Pennsylvania to Seattle/Tacoma Intl.

  • What are the cheapest airlines to fly from Pennsylvania to Seattle one-way?

    $91 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Southwest and Delta, with prices starting from $98 and $99, respectively.

  • What are the most popular routes from Pennsylvania to Seattle?

    When deciding which route to take from Pennsylvania to Seattle consider Newark - Seattle/Tacoma Intl, New York John F Kennedy Intl - Seattle/Tacoma Intl or Washington, D.C. Dulles Intl - Seattle/Tacoma Intl as they are the most popular.

  • What are the most reliable airlines from Pennsylvania to Seattle?

    The top 3 most reliable airlines when flying from Pennsylvania to Seattle are Qatar Airways (86%), Air Tahiti Nui (73%) and American Airlines (73%).

  • What are the cheapest flights from Pennsylvania to Seattle?

    On average you can expect to pay $986 for a flight from Pennsylvania to Seattle. The cheapest flight overall is $168 while the most popular route, (Newark - Seattle/Tacoma Intl) is currently priced at $211.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Pennsylvania to Seattle 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 Seattle?

    Currently, January is the cheapest month in which you can book a flight from Pennsylvania to Seattle (average of $238). Flying from Pennsylvania to Seattle 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

Traveling to a place near Pennsylvania?

Book flights to Pennsylvania if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Ocean Shores
Lacey
Leavenworth
Federal Way
Lynnwood
Olympia
Shoreline
Kent
Cle Elum
Centralia
Kirkland
Aberdeen
Renton
Shelton
Silverdale
Issaquah

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Alternative routes for Pennsylvania to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
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Los Angeles to Seattle flights
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John F Kennedy Intl to Seattle flights
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Salt Lake City to Seattle flights
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San Francisco to Portland flights
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Dallas/Fort Worth to Portland flights
Sacramento to Seattle flights
Las Vegas to Seattle flights
O'Hare Intl to Portland flights
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Cincinnati to Seattle flights
Santa Ana to Portland flights
Cleveland to Seattle flights
Milwaukee to Seattle flights
Columbus to Seattle flights
Nashville to Seattle flights
Burbank to Portland flights
Charlotte to Seattle flights
St. Louis to Seattle flights
Ontario to Portland flights

Top 10 airlines flying from Pennsylvania to Seattle

Discover the top 10 airlines that operate flights from Pennsylvania to Seattle. 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 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$83Average$229FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$140Average$222FlexibilityNo cancel feeOn-time65%
Sun Country AirCheapest$198Average$362FlexibilityNo cancel feeOn-time83%
DeltaCheapest$209Average$419FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$215Average$528FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$229Average$261FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$236Average$556FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$237Average$466FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$246Average$440FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$256Average$556FlexibilityNo cancel feeOn-time75%

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