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$90+ Cheap flights from Seattle (SEA) to Pennsylvania

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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — PHL
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Seattle to Pennsylvania

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

This American Airlines deal was found by Cheapflights users on 12/9. 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.
Wed 12/3111:07 pmSEA - PIT
1 stop7h 35mAmerican Airlines
Wed 1/71:48 pmPIT - SEA
1 stop11h 19mAmerican Airlines
Deal found 12/9$193
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Wed 12/3111:15 pmSEA - EWR
1 stop7h 25mUnited Airlines
Sat 1/107:44 amEWR - SEA
Nonstop6h 22mUnited Airlines
Deal found 12/11$217
This United Airlines deal was found by Cheapflights users on 12/9. 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 12/3111:15 pmSEA - PIT
1 stop7h 29mUnited Airlines
Wed 1/72:06 pmPIT - SEA
2 stops10h 09mUnited Airlines
Deal found 12/9$232
This Kiwi.com deal was found by Cheapflights users on 12/9. 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 12/312:46 pmSEA - LGA
2 stops15h 14mMultiple Airlines
Wed 1/1410:55 pmLGA - SEA
1 stop15h 14mMultiple Airlines
Deal found 12/9$233
This Kiwi.com deal was found by Cheapflights users on 12/9. 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 12/1511:01 amSEA - JFK
1 stop15h 29mFrontier
Fri 1/911:00 amJFK - SEA
1 stop33h 04mFrontier
Deal found 12/9$236
This Mytrip deal was found by Cheapflights users on 12/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1112:48 pmSEA - JFK
1 stop23h 41mFrontier
Tue 1/67:59 amJFK - SEA
1 stop12h 52mFrontier
Deal found 12/8$240
This Mytrip deal was found by Cheapflights users on 12/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/159:45 amSEA - LGA
1 stop8h 28mFrontier
Fri 1/910:55 pmLGA - SEA
1 stop17h 39mFrontier
Deal found 12/9$244
This Delta deal was found by Cheapflights users on 12/9. 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 12/179:25 amSEA - PIT
1 stop6h 10mDelta
Sat 1/37:00 amPIT - SEA
1 stop8h 58mDelta
Deal found 12/9$247
This Kiwi.com deal was found by Cheapflights users on 12/9. 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 12/311:25 pmSEA - LGA
2 stops27h 05mFrontier
Wed 1/710:55 pmLGA - SEA
1 stop15h 26mFrontier
Deal found 12/9$247
This Kiwi.com deal was found by Cheapflights users on 12/9. 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 12/3110:39 pmSEA - EWR
Nonstop5h 20mAlaska Airlines
Fri 1/96:08 pmEWR - SEA
Nonstop6h 20mAlaska Airlines
Deal found 12/9$252
This CheapOair deal was found by Cheapflights users on 12/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/251:25 pmSEA - DCA
1 stop24h 34mFrontier
Wed 1/78:59 amDCA - SEA
1 stop29h 22mFrontier
Deal found 12/11$254
This Expedia deal was found by Cheapflights users on 12/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:46 pmSEA - JFK
1 stop11h 44mFrontier
Tue 1/67:59 amJFK - SEA
1 stop12h 52mFrontier
Deal found 12/8$258

Find flight deals from Seattle to Pennsylvania

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

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$189
(Kiwi.com)

One-way from

$90
(American Airlines)

Popular in

December

Cheapest in

October

Average price

$636

Good round-trip deal

$277 or less

Good one-way deal

$213 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Philadelphia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Philadelphia flights.
Search Deals
From Seattle/Tacoma Intl to Pennsylvania
Search Deals
One-way flight from Seattle/Tacoma Intl to Pennsylvania
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($42 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($19 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 Seattle/Tacoma Intl to Pennsylvania.
Search Deals
Price to beat on a one-way flight from Seattle/Tacoma Intl to Pennsylvania.
Search Deals

Cheapflights Fare Finder

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

Fly from

Seattle

Fly to

Pennsylvania

Route

Depart

Return

Price

SeattleNewark

SEA - EWR

SEAEWR

Seattle/Tacoma Intl

Fri 1/23

8:43 am-4:55 pm

Nonstop5h 12m

Newark

Tue 1/27

6:08 pm-9:28 pm

Nonstop6h 20m

$218

SeattleNewark

SEA - EWR

SEAEWR

Seattle/Tacoma Intl

Fri 1/9

7:00 am-3:19 pm

Nonstop5h 19m

Newark

Fri 1/16

9:00 am-4:01 pm

1 stop10h 01m

$218

SeattleNewark

SEA - EWR

SEAEWR

Seattle/Tacoma Intl

Sun 1/11

11:45 pm-7:59 am

Nonstop5h 14m

Newark

Thu 1/15

2:20 pm-10:43 pm

1 stop11h 23m

$218

SeattleWashington, D.C.

SEA - IAD

SEAIAD

Seattle/Tacoma Intl

Fri 1/23

11:10 pm-11:49 am

1 stop9h 39m

Washington, D.C. Dulles Intl

Sun 1/25

6:00 am-10:42 am

1 stop7h 42m

$219

SeattleNewark

SEA - EWR

SEAEWR

Seattle/Tacoma Intl

Thu 2/19

11:35 pm-7:44 am

Nonstop5h 09m

Newark

Mon 2/23

8:28 pm-11:51 pm

Nonstop6h 23m

$219

SeattleNewark

SEA - EWR

SEAEWR

Seattle/Tacoma Intl

Thu 1/8

7:45 pm-3:29 pm

1 stop16h 44m

Newark

Fri 1/16

6:08 pm-9:28 pm

Nonstop6h 20m

$222

SeattleNewark

SEA - EWR

SEAEWR

Seattle/Tacoma Intl

Sat 1/24

5:59 pm-3:29 pm

1 stop18h 30m

Newark

Sat 1/31

6:08 pm-9:28 pm

Nonstop6h 20m

$222

SeattlePittsburgh

SEA - PIT

SEAPIT

Seattle/Tacoma Intl

Thu 1/8

5:15 am-4:55 pm

1 stop8h 40m

Pittsburgh

Wed 1/14

12:35 pm-10:30 pm

2 stops12h 55m

$224

SeattleNewark

SEA - EWR

SEAEWR

Seattle/Tacoma Intl

Tue 2/24

7:45 am-6:59 pm

1 stop8h 14m

Newark

Fri 2/27

7:29 pm-10:54 pm

Nonstop6h 25m

$229

SeattleNewark

SEA - EWR

SEAEWR

Seattle/Tacoma Intl

Wed 3/11

12:25 pm-8:44 pm

Nonstop5h 19m

Newark

Tue 3/17

3:30 pm-9:14 pm

1 stop8h 44m

$229

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

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

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

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

Currently, September is the cheapest month in which you can book a flight from Seattle to Pennsylvania (average of $42). Flying from Seattle to Pennsylvania in March is currently the most expensive (average of $237). 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 SEA to PA?

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

It’s typically best to fly out from Seattle to Pennsylvania in the afternoon. Doing so could potentially save you 38% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Seattle to Pennsylvania?

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

Travelers seeking maximum savings on their Seattle to Pennsylvania flight should consider departing on Saturday afternoons when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Seattle to Pennsylvania

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

The most flights from SEA to USPA are scheduled on a Monday (8 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).

How much does it cost to fly round-trip from Seattle to Pennsylvania?

Reviews of airlines servicing Pennsylvania

Get insights into the airlines that provide service to Pennsylvania. 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 Pennsylvania. Reviews last updated December 12, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta, and Hawaiian Airlines from Seattle to Pennsylvania. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,432 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Food

7.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Alaska Airlines
8.0
Very good
11,432 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Food

7.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Delta
7.9
Good
8,008 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Food

7.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
Hawaiian Airlines
7.8
Good
2,817 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Food

7.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
United Airlines
7.4
Good
9,095 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Food

7.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.
American Airlines
7.2
Good
11,050 reviews
Alaska Airlines
8.0
Very good
11,432 reviews

Boarding

8.1

Overall

8.0

Comfort

7.8

Crew

8.5

Food

7.1

Entertainment

7.0

Reviews

1 / 20
8.0
Excellent

Anonymous,Sep 2025

SEA - MKE

The crew were excellent, flight good, but the actual space for a person to occupy for 4 hours seems to get smaller and smaller 🤣. I am not overweight, and average height….very uncomfortable,, especially when I couldn’t recliner the seat at all, and the pocket in front doesn’t accommodate a water bottle.

Related info for your journey

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

    If you book a flight to Pennsylvania from Seattle, you will be flying from Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle.

  • How popular is this Seattle to Pennsylvania flight route?

    The Seattle/Tacoma Intl to Pennsylvania flight path was viewed by 4 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 Seattle to Pennsylvania?

    Airlines like Alaska Airlines, United Airlines, and Delta fly from Seattle to Pennsylvania in about 5h 12m. The time it takes to get you to your destination can typically vary by up to 4h 27m. The distance from Seattle to Pennsylvania is about 2393 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    The most popular route from Seattle to Pennsylvania is Seattle/Tacoma Intl - New York John F Kennedy Intl. You may also consider Seattle/Tacoma Intl - Newark or Seattle/Tacoma Intl - New York LaGuardia.

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

    Consider American Airlines (89%), STARLUX Airlines (88%) or Air Tahiti Nui (84%) when booking your flight. These represent the most reliable airlines when flying from Seattle to Pennsylvania.

  • What are the cheapest flights from Seattle to Pennsylvania?

    On average you can expect to pay $412 for a flight from Seattle to Pennsylvania. The cheapest flight overall is $148 while the most popular route, (Seattle/Tacoma Intl - New York John F Kennedy Intl) is currently priced at $225.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Seattle to Pennsylvania (average of $42). Flying from Seattle to Pennsylvania in March is currently the most expensive (average of $237). 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 Seattle to Pennsylvania

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from Seattle to Pennsylvania

Discover the top 9 airlines that operate flights from Seattle to Pennsylvania. 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 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$138Average$258FlexibilityNo cancel feeOn-time65%
FrontierCheapest$140Average$300FlexibilityNo cancel feeOn-time62%
DeltaCheapest$149Average$416FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$177Average$392FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$192Average$455FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$221Average$506FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$222Average$445FlexibilityNo cancel feeOn-time85%
Sun Country AirCheapest$233Average$355FlexibilityNo cancel feeOn-time83%
Alaska AirlinesCheapest$237Average$524FlexibilityNo cancel feeOn-time75%

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