$87 Find Cheap Flights from Seattle to Pennsylvania

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Pennsylvania departing on 5/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
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KAYAK searches hundreds of travel sites at once for deals on flights to Pennsylvania

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Pennsylvania.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Pennsylvania.
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Best Pennsylvania Flight Deals from Seattle

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Philadelphia
Philadelphia1 stop$178
Pittsburgh
Pittsburgh1 stop$242
Harrisburg
Harrisburg1 stop$287
Allentown
Allentown1 stop$417
Scranton
Scranton1 stop$403
State College
State College2 stops$535
Erie
Erie1 stop$416
Latrobe
Latrobe3 stops$428
New York
New York1 stop$177

Cheap Flight Deals from Seattle to Pennsylvania (SEA-USPA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Pennsylvania that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Seattle to Pennsylvania

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Seattle to Pennsylvania.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
Frontier Logo
6:00 am - 4:59 pmSEA-DCA
7h 59m1 stop
Frontier Logo
6:00 pm - 11:49 pmDCA-SEA
8h 49m1 stop
$176Frontier
Find Deal
Tue, Apr 29 - Tue, May 6
Frontier Logo
6:00 am - 4:59 pmSEA-DCA
7h 59m1 stop
Frontier Logo
1:00 pm - 11:49 pmDCA-SEA
13h 49m1 stop
$177Frontier
Find Deal
Sat, May 17 - Tue, May 20
Alaska Airlines Logo
6:41 am - 3:00 pmSEA-EWR
5h 19mnonstop
Alaska Airlines Logo
4:35 pm - 11:37 pmEWR-SEA
10h 02m1 stop
$209Alaska Airlines
Find Deal
Wed, Sep 24 - Sat, Sep 27
Alaska Airlines Logo
3:36 pm - 5:59 amSEA-EWR
11h 23m1 stop
Alaska Airlines Logo
7:30 am - 4:49 pmEWR-SEA
12h 19m1 stop
$218Alaska Airlines
Find Deal
Sat, May 3 - Tue, May 6
United Airlines Logo
12:55 pm - 11:11 pmSEA-PIT
7h 16m1 stop
United Airlines Logo
7:02 am - 11:25 amPIT-SEA
7h 23m1 stop
$242United Airlines
Find Deal
Wed, May 7 - Thu, May 8
Delta Logo
6:00 am - 4:12 pmSEA-PIT
7h 12m1 stop
Delta Logo
11:45 am - 7:29 pmPIT-SEA
10h 44m1 stop
$247Delta
Find Deal
Sat, Jul 5 - Thu, Jul 10
United Airlines Logo
11:11 pm - 10:21 amSEA-EWR
8h 10m1 stop
United Airlines Logo
3:00 pm - 8:41 pmEWR-SEA
8h 41m1 stop
$248United Airlines
Find Deal
Sat, May 31 - Tue, Jun 3
Delta Logo
7:23 am - 9:54 pmSEA-PIT
11h 31m1 stop
Delta Logo
2:39 pm - 10:20 pmPIT-SEA
10h 41m1 stop
$251Delta
Find Deal
Wed, Apr 30 - Sat, May 3
American Airlines Logo
11:55 pm - 11:09 amSEA-LGA
8h 14m1 stop
American Airlines Logo
5:20 pm - 11:50 pmLGA-SEA
9h 30m1 stop
$277American Airlines
Find Deal
Tue, Sep 9 - Sat, Sep 13
American Airlines Logo
12:24 am - 10:44 amSEA-PIT
7h 20m1 stop
American Airlines Logo
6:16 pm - 10:51 pmPIT-SEA
7h 35m1 stop
$293American Airlines
Find Deal
Thu, Aug 7 - Wed, Aug 13

KAYAK's insights & trends for Seattle to Pennsylvania flights

Get data-powered insights and trends into flights from Seattle to Pennsylvania to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Seattle to Pennsylvania flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Seattle to Pennsylvania.
The cheapest ticket to Pennsylvania from Seattle found in the last 72 hours was to Pittsburgh, at $215 round-trip. The most popular route is from Seattle (SEA) to Philadelphia (PHL), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $299.

What is the cheapest time of day to fly to Pennsylvania?

The average price for all round-trip flights from Seattle to Pennsylvania depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to Pennsylvania is generally in the afternoon, when round-trip flights cost $344 on average. Morning departures are around 19% cheaper than evening flights, on average. The most expensive time of day to fly to Pennsylvania is generally in the evening, which is peak travel time and where the average cost of a ticket is $726.

Can I save money by flying with a layover from Seattle to Pennsylvania?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.
No, with an average price for the route of $845, prices are generally cheapest when you fly direct.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Pennsylvania, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Seattle to Pennsylvania is March, when tickets cost $387 (return) on average. On the other hand, the most expensive months are December and February, when the average cost of round-trip tickets is $586 and $533 respectively.

What’s the cheapest day of the week to fly from Seattle to Pennsylvania?

The average price of all round-trip flights from Seattle to Pennsylvania clicked on KAYAK for each day over the last 12 months.
When flying from Seattle to Pennsylvania, you should consider leaving on a Tuesday and avoid Sundays if you are looking for the best rates. For your return to Seattle, you’ll find the best rates on Tuesdays and the most expensive ones on Sundays.

How far in advance should I book a flight from Seattle to Pennsylvania?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Pennsylvania, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.
To get a below average price on the flight from Seattle to Pennsylvania, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low season

January

High season

July

Cheapest flight

$87
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 6% increase in price.
Flight from Seattle to Reagan Washington National Airport

Flights from Seattle to Pennsylvania: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Seattle to Pennsylvania 
Verified travelerFlew with Alaska AirlinesSEA-PHLApr 2025
Direct flight is worth the cost. Use the app. Fast and smooth.
Verified travelerFlew with Alaska AirlinesSEA-PITJun 2024
The SeaTac airport is huge and busy, get there early.
ElaineFlew with Alaska AirlinesSEA-PHLMay 2024
If you have any metal in your body (e.g., spinal fusion screws) make sure you get in the line for the TSA security screening booth that makes you stand on the yellow marks with your arms over your head. I wish I had known this before I wasted time in the alternate line with the walk-through detector.

FAQs - booking Pennsylvania flights

  • How does KAYAK find such low prices on flights from Seattle to Pennsylvania?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Pennsylvania.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Pennsylvania?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Seattle to Pennsylvania is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Pennsylvania?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Seattle to Pennsylvania with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Pennsylvania?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Seattle to Pennsylvania up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Pennsylvania

  • Looking for a cheap flight? 25% of our users found tickets from Seattle to the following destinations at these prices or less: New York $191 one-way - $343 round-trip

Top 5 airlines serving from Seattle to Pennsylvania

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Pennsylvania. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Pennsylvania? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 9882 reviews
8.2Boarding
7.1Food
8.5Crew
7.9Comfort
7.1Entertainment
Airline reviews

An uneventful flight is a good experience although one of the pilots gauges wasn’t working right so we had a half hour delay—no one can foresee that.

10.0 ExcellentAldo, Apr 2025SEA - TPA
Read more Alaska Airlines reviews

An uneventful flight is a good experience although one of the pilots gauges wasn’t working right so we had a half hour delay—no one can foresee that.

Plane was delayed and got me in past bedtime. But more importantly, my tsa precheck number wasn’t on my ticket so had to deal with the general line. Oh well, guess the delay helped that situation.

It was as good as flying can be, which is still very uncomfortable. Clean new aircraft, great crew.

Everything was good. The flight attendants were great. I was disappointed that there wasn’t any screens on the back of the seats to watch movies, tv, etc. I only had my phone to watch movies on.

Flight delayed due to engine issue. For 3+ hours still not on flight

Could have had more of a beverage selection than water and apple juice.

They only had one flight to my destination for the entire day. Six hour layover. Coming from their sister airline we didn't have any boarding grouping on our boarding tickets. Had to ask where we were within the grouping.

Flight was over an hour late, and we got notified every 15 minutes, beginning right at boarding, that it would only be 15 more minutes until we finally left about 75 minutes late. Of course, no compensation was offered.

Just in first class they offer blanquets, for main cabin there was no blanquets even if I would buy them

The flight was delayed and then it was very short. The crew was nice. The seats weren't as comfortable on this particular craft.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

The Dekta Rep that checked us in was great. She's very personable, pleasant, and can tell she enjoys her job.

The plane was old with small storage areas that had problems closing/latching and not enough storage for everyone, and worn, damaged seats. Service was great but feel a little unsafe on such well used planes.

Terrible and im avoiding them in the future. My initial flight was delayed causing me to rebook my flight and when speaking with the representative to rebook I explained this is the second time my flights were delayed and they did nothing to help me. I wasn't booked to comfort plus or given a voucher or anything. I was almost late for my meeting that I needed to attend on Monday because of the games delta played delaying my flights even more and putting me in the very back of the plane next to an extremely intoxicated passenger

Flights on time. .Ride was as comfortable as can be expected in steerage. Luggage arrived at destination. Attendants were fairly friendly.

Great staff. Wifi is terrible. Signing up for skylines is a painstaking process. Had to call customer service just to get my flight itinerary and confirmation sent to me. Consistent delays. A well staffed company that is run so poorly. Upper management needs to be renewed.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

The plane pushed back from the gate on time. However, it stopped on the ramp, and we waited for over 20 minutes before the aircraft pulled back to the gate. Apparently, something of importance had to be removed from the aircraft by the gate agent. I found this to be odd. The delay was not significant, but I felt that whatever was on the aircraft that had to be taken off, should’ve been done before we pushed back from the gate.

Electric plugs didn't work. Entertainment system wasn't working

The design of the light switch on the arm rest is ridiculous.

Smooth boarding process. Early departure, smooth flight, early arrival. The entertainment package has very good recent movie options. The flight crew were friendly and professional.

leg space better than expected. two washrooms for one plane isn't enough.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

I just got back from a trip with 3 flights each way. The flights were good and we were happy with out experience. There was one steward on our first flight that was harsh and grump with passengers. It did not leave a good impression. All of the other flight crews were great on the other five flights.

Food and flight attendents with positive dispositions and friendly behavior, more professional attitudes

The gate was too far away for the connecting flight

Wonderful as usual except for other guests that were unruly and not kept in check by the Crew.

This was an overnight flight. There was no meal service in first class, just a simple snack basket was offered along with beverages. There should have been some type of continental breakfast prior to arrival in PHL. As an Executive Platinum American Airlines Advantage member, I received no name recognition from the first class flight attendant. When disembarking at PHL, the flight attendants were more interested in their cell phones than saying "thank you" to the passengers as they disembarked.

Everything was great except it became so hot on the plane I couldn’t sleep on my red eye flight. It didn’t really cool down till we started descending.

the pilot that landed this flight in Philadelphia did an amazing job, the weather was absolutely terrible and we landed safely.

The only thing is if Wi-Fi is available after you land and taxi to the gate. It takes forever to get to the gate, and having the Wi-Fi continue would be great to bide the time at least 5 minutes before you arrive at the entrance. That is my only comment; otherwise, everything was good.

The flight was just perfect! We left a few minutes early, had a smooth flight and fortunately had landed before the terrible accident that took off from North Philadelphia airport shortly thereafter.

Staff at the gate were incredibly rude, hostile and threatening. Never fly American Airlines.

Timely boarding process, made up for lost time even after a lengthy wait for de-icing

My seat was wonky...hard and not much padding. I sat next to the Jumpseat for the flight attendant. Thoroughly enjoyed not have a third seat in that row! Flight attendants were amazing. I couldn't answer the "food quality" question as there is no food served on my short flight. I commend the pilot as I know it was super gusty when we landed. Thanks

I think I paid for an extra legroom seat and to be honest, there was not a lot of space available for my not very long legs. The flight was totally full and the staff did everything possible to meet the needs of all passengers. My only concern was for the size and spacing of my seat.

It was a short flight so no food or entertainment….

Seats are uncomfortable but price is good. Guess I can put up with misery for four hours.

I’ve never traveled on Frontier before. If you want basic, no frills, friendly service at great prices then give them a fly!

Cancelled and declined to find alternatives Earlier flight is 2 days later Sent the cancellation notification very late, wish I knew earlier would have stayed to watch the Miami open final game Very disappointing service

The worst flight of my life. Never will I fly frontier again

Landing in terminal 2, but my luggage is terminal 3. We (and others) were looking for it in terminal 1. We probably missed the crew broadcast, but the communication could have been clearer for non native (or elderly) passengers.

I chose the seats when booked the flight and paid for them. However after checking in I found we were assigned different seats!

Bag should not be so much money. This is how Frontier takes advantage of customers

The plane was comfortable. The time to board was way too slow and very unorganized! The crew was not as friendly as normally. The was not a single time that they offered water nor anything!!!

They switched my flight to Spirit, Never using Kayak again,

Everything you need to know for your flight from Seattle to Pennsylvania

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