$64 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 4/29. 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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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$149
Pittsburgh
Pittsburghnonstop$227
Harrisburg
Harrisburg1 stop$287
Allentown
Allentown1 stop$369
Scranton
Scranton2 stops$345
State College
State College2 stops$379
Erie
Erie1 stop$606
Williamsport
Williamsport1 stop$928
New York
New York1 stop$148

Good to know

Low season

January

High season

July

Cheapest flight

$64
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 7% 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-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 long is the flight to Pennsylvania from Seattle?

    Flights to Pittsburgh5h 00m
    Flights to Philadelphia5h 38m
  • What is the cheapest flight to Pennsylvania from Seattle?

    The cheapest ticket to Pennsylvania from Seattle found in the last 72 hours was $64 one-way, and $130 round-trip. The most popular route is from Seattle to Philadelphia, and the cheapest round-trip airline ticket found on this route in the last 72 hours was $71.

  • Which airlines fly to Pennsylvania?

    Alaska Airlines flies most frequently to Philadelphia from Seattle. In general, Hawaiian Airlines, Air Tahiti Nui and American Airlines fly the most to Pennsylvania.

  • 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

  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be January, November and December. The cheapest month to fly from Seattle is April.
  • Morning departure is around 27% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

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 9702 reviews
7.1Food
7.9Comfort
8.5Crew
8.2Boarding
7.1Entertainment
Airline reviews

I would fly again. My trip from Newark to Seattle had a 3 hr delay. Disappointed.

10.0 ExcellentAnonymous, Feb 2025SEA - EWR
Read more Alaska Airlines reviews

I would fly again. My trip from Newark to Seattle had a 3 hr delay. Disappointed.

I needed to board early and that was no problem. The snack was just ok. Alaska is an EXCELLENT airlines . . . luggage fast and easy.

Couldn't access movies on the flight.not tech savvy Thought was free.

Alaska Airlines needs more bag tag kiosks and bag check-in stations in Seattle. A single entry point for the bag tag kiosks would be helpful. This alleviates lines forming at each individual kiosk, which causes traffic jams for people passing through.

They left my luggage behind in Seattle. However, they delivered it to my home the next morning.

The whole process was very smooth. My only complaint was finding out the evening before our flight that I had 20 hours left to purchase in flight food. Was not made aware of thus option prior to that alert and was too busy with other preparations to participate.

Alaska Airlines fraudulently listed this as a direct flight to Pittsburgh. We landed in Cleveland, waited an hour, then flew to PIT. No one was told about this. When I called and spoke with Alaskan Airways customer care, they were extremely unhelpful and lied about the direct flight. I have my receipt showing a direct flight. I am in the process of working with my credit card because Alaskan Airlines misrepresented the sale/service. I will never do business with Alaskan Airlines again.

You guys are always have delays and then leaving us on the tarmac for 15-20 min. FIGURE IT OUT!

It was raining and cold and we had to walk outside to board the plane. And to have yo stand outside to wait in line to board. It seems they could find another way to send a few people at a time so passengers are not outside in the elements. Then to not have my luggage show up at my finally destination. Not happy with the whole experience.

I would probably fly with them again. It was a smooth process.

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

I loved having a most black flight crew during Black History Month; rather by design or accident I appreciated the representation. ❤️

This was the second flight this week with flight attendant Marcus I’m not sure if his last name is Lane or Lang but this guy is awesome. He funny, attentive and his service is 5 stars. Marcus makes business travel more enjoyable !

Although the flight left late, we arrived early. It was one of the quickest boarding and off boarding experiences I’ve had. It was kind of annoying the only drinks they had were water, coffee, and tea. The flight was very smooth, temperature was just right, and flight attendants were friendly.

Lower number on this flight so spaced out passengers. Able to enjoy more room to relax during flight. It was lovely.

Kind staff. Snacks are small but that’s the new normal.

The young man who was our flight attendant in first class was lazy and did not do his job well at all. Never offered drinks upon boarding - actually I take that back... said "are you okay with water" as if I do not want to get you anything else, only passed the snacks around once, got my drink order wrong and then never offered a second round of drinks. He was the worst I have ever seen on Delta and we fly a lot.

Great service. Great staff. Boarding was a little slow, but I think there was a service dog slowing things down.

Flight left early and arrived early. the whole trip was excellent.

Seats were really tight and the seat belts did not give enough slack.

I don’t understand the purpose of the orange “priority” tag on my bag. This tagged, my bag is last or near to the last bag to come down the carousel at IAH.

The tv monitor in front of my seat was not responding. The flight crew reset it and it still didn’t work.

The agents was very rude and they charged me $50 for a carry-on bag saying that it was too big and then I saw someone going on a plane with the same size bag as me

Terrible. First of all we were delayed 4 3/4 hours departing Honolulu. As we had to leave our condo and the rental car had to be returned we had to go to the airport. Even though we had a business class boarding pass to Washington, since we did not have business class to Montreal we could not access the lounge without paying a $59 fee each. This does not make sense to us. Since we could not meet our original connection United booked us to Montreal via New York LaGuardia on Air Canada. In Washington a further delay got us into LaGuardia too late to make our connection to Montreal so we were booked on another Air Canada flight 3 hours later. We were originally scheduled to arrive in Montreal at 10:40 and arrived at 19:55. A totally exhausting day, United did not offer a meal voucher or any type of compensation. Air Canada did give us a digital meal voucher. The food in United business class is poor among all meals offered. The pods look nice but are not that confortable. Overall would not fly on United again.

Plenty of room for me and the cat in Premium Economy. Seat was comfortable. Boarding was a breeze. The lady at the special check-in desk was great, super helpful and professional.

For the most part united was a good experience, how ever when they came by with the snacks and water, they completely passed by my wife and I. As we were in separate rows. On a 5 hr flight we were not offered water

Fantastic crew. Flight was delayed at last minute but we were given updates every 20 minutes and the crew was so friendly and considerate. I miss the touch screens on the back of the seats, wish they would bring that back though.

Our seats were all the way in back of the plane,

Food choices were very limited. Taste of the dishes was average.

Maybe add a seat trade app for flyers that didn’t get seats together

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.

My flight attendant was attentive! The elderly person next to me was flatulent and the flight attendant could see that I was in distress and brought me some face masks

Overall flight was as expected. It would have been better with a couple options for snack instead of only one item and if there was a TV or music as option. But overall satisfied.

food not having to pay for it, reclining seat would be nice, more leg room, HEAT!!!!!!!

An absolutely fraudulent experience. Extremely unprofessional. Terrible in all ways possible. Rude staff, flight attendants, and deceptive "policies."

The worst service , the agents from the counter are really bad . Poor customer service . They didnt help me to get in the flight . I was on line when they close the flight without telling and I couldn’t board the plane . I will like to get my money back ey back because it was their fault. Really bad management , bad manners, bad additud

The check in process was a mess for no reason. I spent an hour waiting in line trying to get them to print my boarding pass and as a result I missed my flight.

The airline used deceptive tactics to charge us more for our trip. Search Frontier Class Action Lawsuit to find out more or read the hundreds of reviews that have nearly identical stories.. don't fly this airline.. you've been warned.

Check in at Philadelphia international was absolutely terrible! I fly 2 to 3 times a month and avoid frontier at all cost and will never fly Frontier again! The night before travel, I tried checking in however, the app was giving me an error, so I went to the desktop, which instructed you that you need to use the app. The next day I presented at the check-in gate after trying at least a half dozen times prior to getting into the airport and continuing to getting the error in the app. I actually had rebooted my phone numerous times and reinstall the app just in case. My phone is only one generation older than the current model. It has no problems completing a frontier flight purchase or any other app issues. There was only three frontier employees working at check-in and a huge line while I was in line I continued to try and check in via the app. As I approach the desk, I was dreading dealing with the agent. He was extremely unprofessional, anti-semantic & very ignorant, and mean to the people in front of me, as well as the people who ended up being behind me. He literally told people “Man I don’t care bout y’all” in his native dialect! Maintaining my composure I approached and explained the situation. To which he replied, you’re gonna have to pay then! I don’t understand. It’s an issue with their app not allowing me to check in! Not my issue! He told me if I pay cash it would be $15, $25 if I pay credit card. I don’t understand a $10 difference for paying with a credit card? I am completely cashless so I continued to try using the app to avoid the $25 fee, Which I still don’t believe that I should be responsible for since it was Frontier’s technical issue!!! I continued to check in via the app a couple more times after he verified I was doing everything right he proceeded to continue to belittle the people behind me. Yelling at them saying I don’t care about you people! I cannot believe that this is the way that businesses would treat its customers! Unfortunately, the black mail with dreadlocks did not have a name tag all he had was a frontier sweater on! For the $25 fee that I ended up getting charged on my credit card. I should’ve just booked originally with Spirit or any other carrier! I have no problem paying fees that I should be responsible for, but when it’s due to a technical failure of a company, the customer should not be responsible for it! I cannot believe that it’s not frontier going out of business!

they delayed my flight which ended up, causing my layover flight to leave without me, resulting in me missing a flight and having to stay overnight in Houston international. I got no compensation other than a flight to my original location only a day later. i’ve never experienced such a unprofessional situation

Very easy with the app to board and staff skills

After waiting several minutes to be acknowledged by 3 employees on their phones, was told we had missed our flight because the doors were closed at that literal moment. Had they given any actual service or help while we were standing there we would have been on with time to spare. More than 10 people were turned away in this fashion claiming there was no way they could let us on the plane, even though it was still sitting connected to the terminal. After the desk agents let us know they didn't care about the situation we were forced to pay more than twice the price of our original tickets as no credits were given for the price of the "missed" flight. And the icing on the cake was after being treated poorly, fleeced for another few hundred dollars for new tickets? We waited on the next plane for 25 minutes passed the "doors closed" time, letting almost an extra dozen passengers on board. You're company has lazy, disinterested employees and your lack of any real help will ensure this was the first and last time we fly Frontier. Awful.

My experience with the phoenix airport was terrible, the personnel lay the ticket counter charged me for a carry on that fit in the carry on size box, and the two women I spoke with were terribly rude and not willing to help.,,, there was one lady “candy” on the flight crew that was amazing and is the only reason I stayed on the flight at all, because the other stewards helping people to get seated on the plane were terrible

Book cheap flights from Seattle to Pennsylvania

Recent round-trip flight deals

 
These are the cheapest round-trip flights from Seattle to Pennsylvania found on KAYAK in the last 72 hours.
4/23Wed
1 stopFrontier
12h 59mSEA-DCA
4/29Tue
1 stopFrontier
9h 44mDCA-SEA
$130
4/29Tue
1 stopFrontier
7h 59mSEA-DCA
4/30Wed
1 stopFrontier
20h 44mDCA-SEA
$131
3/19Wed
nonstopDelta
5h 07mSEA-DCA
3/24Mon
nonstopDelta
6h 01mDCA-SEA
$177
3/25Tue
nonstopDelta
5h 04mSEA-IAD
4/8Tue
nonstopDelta
5h 52mIAD-SEA
$177
3/31Mon
nonstopAlaska Airlines
4h 54mSEA-IAD
4/2Wed
1 stopAlaska Airlines
12h 23mIAD-SEA
$207
3/6Thu
nonstopAlaska Airlines
5h 18mSEA-EWR
3/12Wed
nonstopAlaska Airlines
6h 18mEWR-SEA
$209
3/25Tue
1 stopAmerican Airlines
7h 56mSEA-IAD
4/1Tue
1 stopAmerican Airlines
10h 28mIAD-SEA
$217
4/9Wed
nonstopUnited Airlines
5h 07mSEA-IAD
4/26Sat
nonstopUnited Airlines
5h 51mIAD-SEA
$233
4/21Mon
1 stopAmerican Airlines
12h 28mSEA-PIT
4/25Fri
1 stopAmerican Airlines
8h 40mPIT-SEA
$238
5/14Wed
1 stopUnited Airlines
6h 43mSEA-PIT
5/17Sat
1 stopUnited Airlines
10h 19mPIT-SEA
$248

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Seattle to Pennsylvania found on KAYAK in the last 72 hours.
4/29Tue
1 stopFrontier
7h 59mSEA-DCA
$64
4/29Tue
1 stopFrontier
7h 59mSEA-DCA
$65
3/27Thu
nonstopDelta
5h 07mSEA-DCA
$89
4/23Wed
nonstopDelta
4h 51mSEA-IAD
$89
3/30Sun
1 stopAmerican Airlines
9h 15mSEA-DCA
$109
3/24Mon
1 stopAmerican Airlines
7h 58mSEA-IAD
$109
3/26Wed
nonstopAlaska Airlines
4h 41mSEA-PIT
$119
3/5Wed
1 stopAlaska Airlines
15h 19mSEA-EWR
$120
3/11Tue
1 stopUnited Airlines
8h 00mSEA-PIT
$122
3/12Wed
2 stopsUnited Airlines
10h 24mSEA-PIT
$131

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Last minute flights from Seattle to Pennsylvania

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Seattle to Pennsylvania that are departing in the next 10 days.
2/26Wed
multi-stopFrontier
19h 03mSEA-PHL
3/5Wed
multi-stopFrontier
28h 45mPHL-SEA
$219
2/24Mon
multi-stopFrontier
15h 51mSEA-PHL
2/26Wed
multi-stopFrontier
28h 50mPHL-SEA
$236
2/27Thu
multi-stopDelta
8h 41mSEA-EWR
3/12Wed
multi-stopDelta
7h 42mEWR-SEA
$257
2/26Wed
multi-stopAmerican Airlines
8h 01mSEA-EWR
3/13Thu
multi-stopAmerican Airlines
10h 11mEWR-SEA
$258
2/27Thu
nonstopAlaska Airlines
5h 18mSEA-EWR
3/12Wed
nonstopAlaska Airlines
6h 18mEWR-SEA
$259
2/27Thu
multi-stopDelta
9h 00mSEA-EWR
3/14Fri
multi-stopDelta
8h 09mEWR-SEA
$272
2/27Thu
nonstopAlaska Airlines
5h 18mSEA-EWR
3/12Wed
multi-stopAlaska Airlines
18h 31mEWR-SEA
$326
2/27Thu
multi-stopUnited Airlines
9h 12mSEA-EWR
3/13Thu
multi-stopUnited Airlines
13h 13mEWR-SEA
$335
2/27Thu
multi-stopAmerican Airlines
8h 19mSEA-EWR
3/10Mon
multi-stopAmerican Airlines
10h 18mEWR-SEA
$368
2/24Mon
multi-stopUnited Airlines
8h 10mSEA-PIT
2/25Tue
multi-stopUnited Airlines
7h 44mPIT-SEA
$439

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

Information on your arrival and departure airports

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