$99 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 5/5. 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.
1 adult

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.
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Best Pennsylvania Flight Deals from Seattle

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

Philadelphia
Philadelphia1 stop$163
Pittsburgh
Pittsburgh1 stop$239
Harrisburg
Harrisburg1 stop$287
Allentown
Allentown1 stop$583
Scranton
Scranton1 stop$427
State College
State College1 stop$529
Erie
Erie1 stop$633
Latrobe
Latrobe3 stops$589
New York
New York2 stops$189

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
12:30 pm - 5:52 amSEA-PHL
14h 22m1 stop
6:00 pm - 12:10 amPHL-SEA
9h 10m1 stop
$163Spirit Airlines
Find Deal
Tue, May 6 - Sat, May 10
8:56 pm - 11:01 amSEA-LGA
11h 05m2 stops
1:35 pm - 12:10 amLGA-SEA
13h 35m2 stops
$189Spirit Airlines
Find Deal
Mon, May 5 - Wed, May 7
9:42 pm - 5:59 amSEA-EWR
5h 17mnonstop
7:00 am - 10:01 amEWR-SEA
6h 01mnonstop
$219Alaska Airlines
Find Deal
Mon, Apr 14 - Wed, Apr 23
11:25 pm - 7:38 amSEA-EWR
5h 13mnonstop
8:20 am - 3:58 pmEWR-SEA
10h 38m1 stop
$225United Airlines
Find Deal
Thu, Apr 17 - Wed, Apr 23
9:15 pm - 2:29 pmSEA-EWR
14h 14m1 stop
7:00 am - 10:01 amEWR-SEA
6h 01mnonstop
$229Alaska Airlines
Find Deal
Mon, Apr 14 - Wed, Apr 23
2:18 pm - 12:58 amSEA-EWR
7h 40m1 stop
8:20 am - 3:58 pmEWR-SEA
10h 38m1 stop
$234United Airlines
Find Deal
Thu, Apr 17 - Wed, Apr 23
10:05 pm - 9:40 amSEA-EWR
8h 35m1 stop
1:30 pm - 7:25 pmEWR-SEA
8h 55m1 stop
$239American Airlines
Find Deal
Mon, Apr 14 - Wed, Apr 23
11:40 am - 10:55 pmSEA-PIT
8h 15m1 stop
4:25 pm - 9:59 pmPIT-SEA
8h 34m1 stop
$247American Airlines
Find Deal
Wed, Apr 30 - Sat, May 3
10:55 pm - 8:38 amSEA-EWR
6h 43m1 stop
7:00 pm - 12:02 amEWR-SEA
8h 02m1 stop
$257Delta
Find Deal
Tue, Apr 22 - Mon, Apr 28
6:00 am - 6:28 pmSEA-PIT
9h 28m1 stop
4:03 pm - 8:19 pmPIT-SEA
7h 16m1 stop
$257Delta
Find Deal
Wed, May 28 - Tue, Jun 3

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 $176 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 $297.

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 $857, 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 April, when tickets cost $397 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is $584 and $551 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

$99
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly with an average 9% increase in price.
Flight from Seattle to New York LaGuardia 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-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 $179 one-way - $320 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 9798 reviews
8.5Crew
7.1Food
7.9Comfort
7.1Entertainment
8.2Boarding
Airline reviews

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

2.0 MediocreAnonymous, Mar 2025SEA - BOI
Read more Alaska Airlines reviews

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.

No food, just a snack on a Seattle to Boston flight? VERY chintzy.

Behind schedule. Lots of time on tarmac. Perhaps unavoidable. Better than crashing!!

It's a pity we missed our flight by 2 minutes.

Did not travel - unexpected medical emergency. Nonrefundable tickets, but Alaska Air sent credit vouchers for the entire amount (very generous, and I didn't expect that). However, I paid for insurance with Kayak's partner company. The 'insurance' might pay for lost baggage, but they referred to the contract in refusing to a dime on the policy. (If you died from a heart attack in the waiting area, I suspect they would claim the right to DENY if your general practitioner had found high blood pressure previously and prescribed daily HTCZ pills - even tiny ones.) They described a policy to deny any claim with even the slightest whiff of pre-existing. I suspect that they probably almost NEVER pay money out on a medical claim, and that their 'local medical assistance' has no coverage either - that it's just an abusive profit center sending gigantic bills while contributing nothing from your 'policy coverage'.

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.

The WiFi didn't seem as fast as it normally is

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

The crew was wonderful and attentive. The seats near exit row were restrictive. Offer healthy snacks please

Delta is a premier airline so my expectations are most always met.

Seats are much much more comfortable than United, which is what I usually fly

Compared with other carriers business class for an overnight was not worth the extra expense.

Generally good. The aisles have gotten narrower which can slow down boarding. Flight crew was great! Healthier complimentary snacks would be appreciated. Due to earthquake in San Francisco we had to circle in air space for a bit but then had a smooth landing. I laud the flight crew for their patience ;)

Easy to board. Flight was super crowded though so I didn't sleep well on that cross country red-eye flight. The aisles seem ot have gotten narrower and the seat smaller whn luggage and people are getting bigger so it would be AWESOME to have more space and breathing room in general ;)

We boarded but then sat there waiting on some missed connection people to get on so we sat for about 15 minutes for that. Then we sat again because the passenger manifest was wrong and they had to figure it out before we could leave. That took about another 20 minutes or so. The crew was working hard to figure it out so it’s not their fault. It ended up being a system glitch where someone was upgraded to first class while another person was also in the same seat and it just created a mess that took a little while to figure out. They literally went to every person on the plane asking their names to see who was sitting in the wrong seat. I also hate the entertainment that must be watched on your phone or tablet. Just give us setback screens. It’s so much better. Almost every Delta flight has this now and it is so nice to have them. The crew did a great job. I have no complaints from them. They were very hard working, even with the mishap and a disgruntled passenger.

Overall poor for me I paid extra for seats with leg room and my regional flights exit row seats have less leg room then the others that's money that could have been saved and on my final flight home the flights air was not operating it was unbearably hot in the cabin I will be contacting United and filing a DOT complaint

My priority checked bag was not loaded on the flight. I had to sit in baggage claim in Las Vegas for 2 1/2 hours waiting for the next flight. All baggage staff were very helpful, tracking showed it as scanned for loading. Nobody told me why it wasn't on my flight.

My flight was scheduled for about 6:05 departure. There were 11 gate changes from 4-7pm and the flight was 3 hours delayed due to operational issues. The plane taxied around the airport for about half an hour before stopping to be de-iced. It would have been nice if we were alerted of the plan to de-ice prior to the 30 minute drive around the airport. The flight attendant was friendly, which was the only redeeming thing about this flight. As a former flight attendant for United, I was extremely disappointed.

Delays took 2hours and thirty minutes making me miss my connecting flight and make me sit in the Chicago airport for 9 hours

Had a short delay once we boarded the aircraft in Chicago, but it was fixed in no time flat then we were on our way. The pilot was able to make up the time lost and we landed 5 minute later then schedualed . Great service

Pilot Erika DeLong made us feel safe and at ease in a frankly scary time to be flying. Her warm smile and greeting and excellent command of the aircraft in foggy bumpy weather helped us all to calm our nerves and get us home safely.

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.

I chatted with the captain before the flight, and similarly during the welcome announcement, he warned of a turbulent flight that may impact the in-flight service. However, once at altitude, he announced that the weather changed and he immediately turned off the seatbelt sign. But it appeared the cabin crew had already decided to take off this flight. They remained seated and then just chatted in the galley. The flight was fully catered, but only first class received service.

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

i was denied boarding, even though i had an assigned seat, checked in on line and was at airport early. Then they refused to fully refund the the fair and replacement fair because they claimed it was "no show/denied boarding". I will never fly this airline again

I was not permitted on my flight and had to purchase another flight ticket to Las Vegas.

This was a full flight and I was in Zone 1, however upon boarding, several other zones went in ahead of me, leaving no overhead cabin space near my seat. This created a challenging disembarkment process.

Frontier had yet another flight cancellation. Have never made a complete round trip with this airline without at least one leg getting cancelled. Miserable flights - dirty, uncomfortable planes that apparently always have issues since I've had multiple delays and cancellations with them.

Flight was delayed 3 times, would have been nice to have received text message instead of email notifications. Frontier app wasn’t even updated accordingly, no gate number disclosed. No agent at front desk of gate to inform of delay. Very confused and left if the dark

It was a no frills flight. Would have liked to be able to charge my device

The flight itself was ok and the pilot was very communicative. However, our flight was delayed for almost 3 hours, the gate was changed 3 times and there was no communication as we were waiting. The flight staff was overall a little crabby...I understand as they probably had a long day but we all did.

Asked for a seat change to be w my wife at the gate they were great in sorting it out to make it happen

Everything went as planned. Crew was great. Seats were still not that comfortable.

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

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.