$85 Find Cheap Flights from Seattle to Pennsylvania - Compare and Save

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 9/2. 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
1 adult, Economy, 0 bags

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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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Cheap Flights from Seattle to Pennsylvania

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Philadelphia
Philadelphianonstop$329
Pittsburgh
Pittsburgh1 stop$300
Harrisburg
Harrisburg1 stop$307
Allentown
Allentown1 stop$345
Scranton
Scranton1 stop$349
State College
State College1 stop$479
Erie
Erie1 stop$504
Williamsport
Williamsport1 stop$768
Washington, D.C.
Baltimore1 stop$227
New York
New York2 stops$303
Philadelphia
Philadelphianonstop$329
Pittsburgh
Pittsburgh1 stop$300
Harrisburg
Harrisburg1 stop$307
Allentown
Allentown1 stop$345
Scranton
Scranton1 stop$349
State College
State College1 stop$479
Erie
Erie1 stop$504
Williamsport
Williamsport1 stop$768
Washington, D.C.
Baltimore1 stop$227
New York
New York2 stops$303

Book Cheap Seattle to Pennsylvania Plane Tickets

 
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.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Pennsylvania

Thu, Aug 27 - Mon, Aug 31
American Airlines Logo
5:10 am - 3:58 pm
SEA
-
DCA
7h 48m
1 stop
American Airlines Logo
3:11 pm - 9:59 pm
DCA
-
SEA
9h 48m
1 stop
$295American Airlines
Thu, Aug 6 - Tue, Aug 11
Alaska Airlines Logo
4:01 pm - 11:59 pm
SEA
-
IAD
4h 58mnonstop
Alaska Airlines Logo
6:03 am - 8:48 am
IAD
-
SEA
5h 45mnonstop
$295Alaska Airlines
Thu, Aug 6 - Sat, Aug 15
Alaska Airlines Logo
4:01 pm - 11:59 pm
SEA
-
IAD
4h 58mnonstop
Alaska Airlines Logo
6:14 pm - 9:09 pm
IAD
-
SEA
5h 55mnonstop
$296Alaska Airlines
Mon, Jul 13 - Mon, Jul 20
American Airlines Logo
10:35 pm - 10:07 am
SEA
-
PIT
8h 32m
1 stop
American Airlines Logo
7:36 pm - 12:57 am
PIT
-
SEA
8h 21m
1 stop
$300American Airlines
Thu, Aug 6 - Fri, Aug 21
United Airlines Logo
11:20 pm - 7:22 am
SEA
-
IAD
5h 02mnonstop
United Airlines Logo
5:26 pm - 11:04 pm
IAD
-
SEA
8h 38m
1 stop
$301United Airlines
Thu, Sep 3 - Tue, Sep 8
Southwest Logo
5:15 am - 3:30 pm
SEA
-
PIT
7h 15m
1 stop
Southwest Logo
6:30 pm - 11:05 pm
PIT
-
SEA
7h 35m
1 stop
$301Southwest
Fri, Sep 18 - Mon, Sep 21
Southwest Logo
11:05 pm - 12:10 pm
SEA
-
PIT
10h 05m
2 stops
Southwest Logo
12:50 pm - 10:55 pm
PIT
-
SEA
13h 05m
2 stops
$303Southwest
Wed, Aug 26 - Sun, Sep 6
Delta Logo
7:20 am - 3:21 pm
SEA
-
DCA
5h 01mnonstop
Delta Logo
4:35 pm - 7:41 pm
DCA
-
SEA
6h 06mnonstop
$305Delta
Thu, Jul 23 - Wed, Jul 29
United Airlines Logo
11:20 pm - 9:40 am
SEA
-
PIT
7h 20m
1 stop
United Airlines Logo
6:16 pm - 11:16 pm
PIT
-
SEA
8h 00m
1 stop
$312United Airlines
Wed, Sep 23 - Tue, Sep 29
Delta Logo
5:25 am - 4:49 pm
SEA
-
EWR
8h 24m
1 stop
Delta Logo
11:52 am - 4:43 pm
EWR
-
SEA
7h 51m
1 stop
$319Delta
Booking Insights

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.

How much is a round-trip flight from Seattle to Pennsylvania?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Seattle to Pennsylvania departing in September.

What is the cheapest Seattle to Pennsylvania flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Pennsylvania from Seattle found in the last 5 days was to Philadelphia, at $317 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 5 days was $317.

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 at night, when round-trip flights cost $454 on average. Morning departures are around 33% 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 $384, 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 September, when tickets cost $42 (return) on average. On the other hand, the most expensive months are May and December, when the average cost of round-trip tickets is $184 and $178 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 Wednesdays and the most expensive ones on Mondays.

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, which saves you about 42% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$85
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly with an average 10% increase in price.
Flight from Seattle to Pittsburgh

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 Airlines
SEA
-
PIT
Jun 2024
The SeaTac airport is huge and busy, get there early.
ElaineFlew with Alaska Airlines
SEA
-
PHL
May 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.

Reviews of the 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.
7.9
Alaska AirlinesOverall score based on 12509 reviews
7.0Entertainment
7.8Comfort
8.1Boarding
7.0Food
8.5Crew
Airline reviews

People were friendly. Flight was a little delayed. Maybe I missed the reason for it. Overall a nice experience.

8.0 ExcellentScott, Jun 2026
SEA - LAX
Read more Alaska Airlines reviews

People were friendly. Flight was a little delayed. Maybe I missed the reason for it. Overall a nice experience.

Crews were friendly enough. To help the airline I checked my carry on baggage. Typical "gonna be a full flight we need 19 carry on bags to be checked to help out". So I helped out only to have to wait 30+ mins for my luggage and risked not getting to my car rental on time. The return flight was delayed. Kept hearing employees say something about "they didn't have any power" which is kind of concerning. The air flow and air conditioning was insufficient. It was warm and stuffy during the flight. Plus no free wi-fi......Booooooo!

Didn’t even get on, check my flight to Seattle for details. Do better Alaska.

A five hour nonstop flight traveling over a few time zones and over the dinner hour and you get a small bag of pretzels. And no screens to watch movies. I

The flight kept getting delayed due to a maintenance issue. That happens, but there is no excuse for changing the gate FIVE TIMES, including one time nearly all the way across SeaTac. After we were delayed for 3+ hours, they did send us (via email) a $12 meal voucher...except you can't find a $12 meal anywhere in that airport, unless you consider a bag of M&M's and a bottle of water a meal. The plane had one problem after another but finally took off 4.5 hours late. This caused us to miss our hotel shuttle at ORD (they didn't run past midnight and it was 3 am) so we had to wait 25 minutes and pay for an Uber. I did get a $50 flight voucher from Alaska...big deal. Barely covers my Uber ride that I shouldn't have needed.

I upgraded to a better seat and it was much more comfortable. Nobody serves food anymore and actually on a 2+ hr flight not necessary. I didn’t even get water.

Check in & bag drop was straightforward. Alaskair changed the gate approx 40 min before departure, and I only became aware due to Google wallet update to my boarding pass. Had to move from gate N1 to C9 which required use of the Train, luckily I had time available.

Super impressed by staff courtesy, and assistance, Flight was one of the best I've had despite turbulence... Will definitely be flying Alaskan air as my preferred choice

My boarding passes were pulled from my Apple wallet and my 3 family members who were all sitting together in the same row all got put middle seats and were one of the last to board and barely were able to get our bags in the luggage bins.

Was disappointed not to have known Alaska Air offers no music, no flight aware, no films.

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

It was great. The gate staff were very helpful in Portland when my son forgot his rolling bag and had to go back to get it just in time to make it on the plane. We really appreciate that. Great job!

Airline is not very senior friendly. Flights are late, forcing us to run to the connecting flight. Food is awful. Wish they would go back to pretzels and peanuts. During flight, pressurization isn’t quite right and all of our ears get plugged. Everything is nickel and dime, charging for boarding, seat selection and legroom. While a screen at the desk in the gate area says check your roll on bag now for free due to space limitation, the employee at the desk will not check the bag without a $100 fee. Insane.

Kayak could’ve posted the correct gate number. Almost missed my flight.

Slow boarding, limited food and drink portions. Bad delays and turbulence

there were two flight attendants that were up front...that were the best! They get KUDOs for making my trip only fantastic. Tell them Jeff said that!

OKay. I sat in the back of the plane and it was really loud between babies and little kids, and adults who.like to talk a lot and loudly most of the flight.

Flight coming out of Buffalo was delayed, so we had to be rescheduled on another flight from Baltimore to Phoenix which means we had a long layover and got home 3.5 hours late. Shuttle to parking stopped at 10pm, so we had to pay for an Uber to the parking lot and got charged an extra day of parking since it was after midnight. Not the best experience. Long day!

Was fine, delayed and feels like southwest is always late

I don't know why flying out of Sarasota requires two plane changes.

I have Precheck. Flew HPN to DEN and return this past weekend. Delta didn't attach my Precheck number to this trip. So it was waiting in general line especially in Denver. Unavailable.

Original flight was delayed, then cancelled and the gate staff did not expedite rebooking. Also, no instructions were given that a ticket number was needed before being called to facilitate rebooking. This could have been much more organized.

Be on time? When not on time a circling for over an hour offer more than 1 bag of chips to the passengers? It was a 7 hour flight by the time we got done.

Five hour delays every hour, I wish it were all at once

Flight delayed four separate times. I’m now one hour hours late to landing.

Only beverages were offered to first class and I thought the flight attendant could have also served the Delta Comfort as well instead of sitting down and staring at her phone and walking past all of us to the back of the plane to charge her phone more. There was a complete lack of turbulence and was safe enough for flights attendant to walk around in the front of the plane, collect trash and serve a few people water and turn off the seat belt light. Also didn’t enforce people putting their seats into the upright position and allowed two passengers to remain reclined during landing. They seemed out to lunch completely. Usually my experience on Delta is much better.

The Boarding process was great. Particularly since my wife and I require assistance. The flight attendants were amazing. We travel frequently; they honestly were a cut above. 😀

Crew was nice, meal was good. Entertainment had to be rebooted 3 times and still did not work. Turns out there was residue on screen, it needed to be cleaned to prevent the touchscreen buttons from continuously activating. I had entertainment for the last 45 minutes of a 5 hour 45 minute flight. Really unacceptable for first class. Flight attendent indicated your cleaning solution creates this problem. Seems as if this is widely known, you should be using a different product or cleaning better. Really really disappointing which simply added to the wi fi on your planes with reliably never ever works.

My tray was broken so i had no place to work or eat except my lap. Flight attendant said I would get an email with some credit or miles, it was a complete waste of time as I could only function at about 20% of normal. I have not received anything yet.

Snacks and included beverages were appreciated. Boarding went smoothly. Plenty of overhead bin space. Seats get very uncomfortable after a couple of hours. After waiting 10 painful minutes for my walker, a very nice Delta guest agent pushed me in a wheelchair to the gate. It was finally delivered to me after another 15 minutes . Our checked bag was on the carousel long b4 I was able to retrieve it. Fortunately it was still there but somewhere along the way the straps we used to secure it were removed and and were not reattached. Wish I had made note of the agents name.

Horrible! Several delays and then was cancelled! I spent over 24 hours in the airport and was unable to get a hotel or food voucher.

The entertainment is a bit limited, it would be better if they added some games to play besides the movies and tv shows. But the seats are comfortable and the crew is polite

This planes staff was top tier. Everything went great and had a great flight home.

Food was great. Staff was phenomenal. Seats were a bit hard and could use a lot more entertainment options as far as movies to choose from. WiFi was good. Overall great trip.

This was an overnight flight, and in the morning they did know coffee service. How you can throw passengers in a San Francisco airport at 5:40 a.m. in the morning and not giving them Coffee is a crime.

Our flight was delayed several Times due to mechanical issues. Although I understand this may happen at times, it was very inconvenient and we had to book a hotel for an overnight stay. We were traveling with my 3-yo grandson and waiting at the airport from noon until 6:30pm with no reassurance that our next rescheduled flight would depart, we had to decide what’s best for him. A day later, I found out that I may be able to demand compensation if my flight is delayed more than 4 hours. I will hav to read the fine print next time.

The pilot had to extend the flight time from san antonio to Houston to burn off fuel. This caused a lot of unnecessary stress since we had a tight connection to Aruba. And with no other flights going to Aruba we were worried about spending a night in Houston. We had to to run to our connection because of the flight crews mistake. Not happy.

Service was professional and quick. Premium economy seat was comfortable given the class

I'm a United 1K member and have ben for 10 years. The gate agent had no control over the boarding process and had us passengers queued for hours as delays were announced. On the plane, the overhead air nozzle was broken so col over was powering through on me and the passenger next to me. Not a great experience for a million miler on United. Feel free to contact me. Josh Smigel - DM426089

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

The seats. The seat in front of me was awful and when the guy sat down, it flew back and hit my head when I was putting my backpack under the seat, It didn't make for a pleasant experience,

Cancelled flight. Still waiting to get home for grand daughter’s graduation .

Left early arrived early..right amount of talking from pilots..of course had to love the biscuit and water!

As we approached Denver, we encountered quite a bit of turbulence. I know this can sometimes be the case as I frequently fly this route but not on American. My gripe: Usually a pilot or co-pilot alerts passengers to the possibility of turbulance ahead of time. This did not occur nor did he communiucate during what was a pretty rough ride.

The flight was on time and the landing was very smooth. The crew and flight attendants were all very friendly and professional.

When I booked my flight a month ago - I selected a seat. That seat was NOT the one I ended up with when I checked into my flight the day before. This is the second time this has occurred. So, I checked my next flight on Wednesday and Thursday and no seat was assigned. Poor, very poor customer service.

Cleared standby and gave up my seat. Terrible policy and boarding experience

Message about flight cancelation was received late due to being in the air. No explanation, just canceled and booked on morning flight. We had to stay in the airport overnight because there was no transportation offered to get to the hotel that AA had available. Actual inflight was fine.

Bag drop was very disorganized in Miami. All main cabin passengers were shunted to just a few lanes and they had an equal number of lanes for first class passengers but there was nobody on those lines. They did nothing to bring the main cab and passengers over to the open lines and they just had employees standing there and doing nothing

We did not have enough time to make our connecting flight. As a result, we were put onto a different airline for our second leg. The different airline was NOT comparable to British Airlines, and our arrival was significantly delayed. The actual flight on BA was amazing.

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

Information on your arrival and departure airports