$120 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 6/5. 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
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$239
Harrisburg
Harrisburg1 stop$261
Allentown
Allentown1 stop$388
Scranton
Scranton1 stop$349
State College
State College1 stop$389
Erie
Erie1 stop$379
Williamsport
Williamsport1 stop$876
Washington, D.C.
Baltimore1 stop$237
New York
Newarknonstop$267
Philadelphia
Philadelphianonstop$329
Pittsburgh
Pittsburgh1 stop$239
Harrisburg
Harrisburg1 stop$261
Allentown
Allentown1 stop$388
Scranton
Scranton1 stop$349
State College
State College1 stop$389
Erie
Erie1 stop$379
Williamsport
Williamsport1 stop$876
Washington, D.C.
Baltimore1 stop$237
New York
Newarknonstop$267

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

Tue, Aug 25 - Fri, Aug 28
United Airlines Logo
12:29 pm - 10:40 pm
SEA
-
PIT
7h 11m
1 stop
United Airlines Logo
3:51 pm - 9:56 pm
PIT
-
SEA
9h 05m
1 stop
$239United Airlines
Thu, Jun 4 - Mon, Jun 8
Delta Logo
4:05 pm - 12:13 am
SEA
-
IAD
5h 08mnonstop
Delta Logo
7:00 am - 9:45 am
IAD
-
SEA
5h 45mnonstop
$245Delta
Wed, May 20 - Tue, May 26
Frontier Logo
7:50 pm - 9:58 pm
SEA
-
DCA
23h 08m
1 stop
Frontier Logo
7:00 am - 10:06 am
DCA
-
SEA
30h 06m
1 stop
$246Frontier
Thu, Jun 4 - Tue, Jun 9
Frontier Logo
8:20 pm - 8:12 am
SEA
-
IAD
8h 52m
1 stop
Frontier Logo
9:55 am - 10:35 am
IAD
-
SEA
27h 40m
1 stop
$247Frontier
Fri, Jun 5 - Wed, Jun 10
American Airlines Logo
11:24 pm - 10:59 am
SEA
-
PIT
8h 35m
1 stop
American Airlines Logo
5:00 am - 9:50 am
PIT
-
SEA
7h 50m
1 stop
$258American Airlines
Wed, Aug 19 - Sat, Sep 12
American Airlines Logo
11:59 pm - 12:42 pm
SEA
-
MDT
9h 43m
1 stop
American Airlines Logo
7:40 pm - 1:13 am
MDT
-
SEA
8h 33m
1 stop
$261American Airlines
Wed, Sep 9 - Wed, Sep 16
Southwest Logo
5:20 am - 3:10 pm
SEA
-
PIT
6h 50m
1 stop
Southwest Logo
1:25 pm - 8:15 pm
PIT
-
SEA
9h 50m
2 stops
$263Southwest
Sat, Sep 19 - Tue, Sep 22
Alaska Airlines Logo
8:50 am - 5:27 pm
SEA
-
EWR
5h 37mnonstop
Alaska Airlines Logo
7:20 am - 10:22 am
EWR
-
SEA
6h 02mnonstop
$268Alaska Airlines
Sat, May 30 - Sat, Jun 6
Alaska Airlines Logo
3:30 pm - 11:59 pm
SEA
-
EWR
5h 29mnonstop
Alaska Airlines Logo
6:29 pm - 9:42 pm
EWR
-
SEA
6h 13mnonstop
$271Alaska Airlines
Wed, Jul 22 - Mon, Jul 27
Southwest Logo
10:45 pm - 12:30 pm
SEA
-
PIT
10h 45m
1 stop
Southwest Logo
8:10 pm - 12:25 am
PIT
-
SEA
7h 15m
1 stop
$284Southwest
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 May.

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 72 hours was to Philadelphia, at $329 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 $329.

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 $452 on average. Morning departures are around 30% 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 $399, 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 April and June, when the average cost of round-trip tickets is $177 and $174 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 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, which saves you about 44% 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$120
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly with an average 5% 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.

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: Newark $198 one-way - $338 round-trip

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.
8.0
SouthwestOverall score based on 4314 reviews
8.0Comfort
7.0Food
8.1Boarding
7.5Entertainment
8.6Crew
Airline reviews

The entire experience from boarding to landing was amazing! The crew were very friendly. Will definitely be back.

10.0 Excellentlarry, Apr 2026
LGB - PHX
Read more Southwest reviews

The entire experience from boarding to landing was amazing! The crew were very friendly. Will definitely be back.

no service at all due to turbulence. they should've at least given us snacks, there were only 10 people on the entire flight.

First time I've had to use the disabled accommodations. And I could not have had a better experience with Southwest, i was having trouble getting from one terminal to another due to my heart failure. And the next thing I know a Southwest agent had made sure. I had a wheelchair at all my flights. Can't thank them enough.

Delayed flight, lack of information, boarding process is a mess as is the carryon luggage causing issues when leaving the plane….just a poor experience.

Comfortable. Easy. No problems. Just wish they had gf options for snacks.

The crew was very kind and made going to Hawaii relaxing and fun to look forward to! Thank you Southwest for a pleasant flight!

This leg was much better, but we did have to have a 3 hour lay o er after coming from a very exhausting hiccup with our flight from BNA to Den

We waited in the airplane for over 45 min for a southwest employee to make the flight. This cause over half the plane to miss their connecting flight in Denver. When we confronted the desk upon arrival, they told us the only flight they had was the next day leaving at 8:50 pm!!! Or they offered to get us to Burbank or LA, but after that we were on our own to get back to Santa Barbara. I paid for a flight from sba to bna bna to sba. My re entry into mom mode has been 💯 rough because of southwest mistake with my flight. And now I’m leaving to Reno tomorrow for a vballl tournament and just discovered that my leg in Vegas has me and my 3 kids on a stand by flight even though I had booked these ticket last year November!! Do better southwest!

Southwest is kind of a slum airline. It’s gotten more expensive over the years for less and less service. I am a Southwest Chase Visa card holder and was forced to choose a seat in the 26th row in the middle seat. However my wife who is a rewards member but doesn’t hold a card or anything else, gets randomly assigned a normally paid seat in row 6! How does that work?

For the first time in a long time, the Wi-Fi actually worked the entire flight! The flight crew was amazing as usual.

The crew was great and everything went smoothly coming and going.

My window seat did not have a window. I chose seat 11A thinking I would have a view. I had a wall instead.

See what I wrote in the previous section. This was a terrible experience. I would like refund.. I even paid an extra $70 for an aisle seat closer to the front to ensure that I got off early enough to catch the next flight. The fact that the plane did not wait, and even left eearlier, knowing that the first flight came in late, and was moved to a terminal three train stops away is appalling. My friend that flew JetBlue, their flight was delayed and came in later and the connecting flight WAITED for them. How is it that JetBlue could do that, and Alaska could not.

This was my second time flying Alaska Airline in the 1st Class cabin. Everything was fine with the exception of the food and entertainment. The food was just ok but not what I was expecting from 1st Class. A BBQ pork sandwich and baked potato. There wasnt any in-flight entertainment. I found that odd since it was a coast to coast flight Seattle to Dulles. My sister flew 1st Class on Delta on a shorter flight ( Seattle to Cincinnati) and had an awesome meal and in-flight entertainment. I typically fly Delta but there wasn’t a flight with times that fit my schedule. I am by no means a primary donna. But when my upgrade cost over $900…I didn’t use any reward miles…I was expecting more than what I got. I will never fly Alaska Airline 1st Class again. I will stick with Delta for all my travel needs whether it’s in 1st Class or coach.

Good staff. Comfortable seats. Had to check my bag because the flight was too full.

Loved this first class flight! Awesome food, snacks and drinks. Comfortable seat with foot rest. Good movie. Very friendly crew! Only thing I would suggest is having a screen on seat back in front of me so I didn’t have to watch the movie on my phone.

The crew was very attentive, boarding was orderly. I really liked the way Alaska Airlines gives boarding passes and dropping off my bags. Very smooth.

Once we were in the air, the flight was nice and smooth. The flight was about twenty minutes late to begin with, though, and then we needed to wait to land for another plane to land first.

Flight crew great! No WiFi not great. Someone took my bag not great!

Alaska Airlines staff go out of their way to accommodate my fragile musical instrument, every time. They are unlike any other airline. I've experienced this can-do attitude on several flights with different staff, so this must be the culture of their company. I appreciate Alaska!

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

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.

It was fine. 55 minute flight. No snacks or beverage service offered. Boarding went smoothly and my walker was waiting for me on the jet way.

The cabin temperature was nice and cool. The wifi was not working.

Could not get my connecting flight boarding pass until four hrs before departure! Ver annoying especially since the staff could not explain why!

Delayed. Hot. Passenger next to me was so large I couldn’t move.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

A long delay. Don't travel late in the day.

Super friendly with lots of drink options an entertainment. Friendly crew.

Standard flight with a drinks and a snack- overall very quick flight. The flight attendants were very strict, bordered on rude.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

They told us yesterday APR21st that they were cleaning the plane and we got delayed. After that they said they didn't had any crew for the flight so they cancelled the flight till next day.

The crew was great. Very friendly and responsive. The plane was old, small and tight. We ran out of overhead space and I had to check. Middle seat was particularly tight.

The flight crew on this leg of my trip was very friendly and pleasant. Every one of them was humorous, as well as helpful and accommodating. This group was BY FAR the best crew I’ve flown with. They deserve kudos.

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.

Flight boarded from Gate 159B, the farthest gate in the LAX Bradley Terminal. While the flight operated on time, the first class cabin attendant made no recognition of my being an Advantage Executive Platinum member.

American Airlines did everything they could with the high Spring Break crowd. I was frustrated to be changed from 1st class to a middle seat at the back of the plane. This has happened before, not sure booking 1st class and paying the extra actually works.

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

Information on your arrival and departure airports