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SEA - PHL

Find cheap flights from Seattle to Philadelphia from $131

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 Philadelphia departing on 6/17. 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
0 bags
Thu 6/6
Thu 6/13

Search hundreds of travel sites at once for deals on flights to Philadelphia

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Philadelphia.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Philadelphia.
In the last 7 days travelers have searched 43,707,506 times on KAYAK, and here is why:

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Cheap flight deals from Seattle to Philadelphia (SEA-PHL)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Philadelphia 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 and deals for you by selecting your travel dates.
Choose your dates
9:40 pm - 9:00 amSEA-PHL
32h 20m3 stops
12:25 pm - 8:45 amPHL-SEA
23h 20m2 stops
$234Spirit Airlines
Find Deal
Mon, May 13 - Sat, May 18
12:20 pm - 11:13 amSEA-PHL
19h 53m1 stop
4:30 pm - 9:39 amPHL-SEA
20h 09m1 stop
$235Sun Country Air
Find Deal
Wed, Jul 24 - Sat, Jul 27
11:02 pm - 5:39 amSEA-PHL
27h 37m1 stop
8:30 pm - 9:36 pmPHL-SEA
28h 06m1 stop
$237Frontier
Find Deal
Thu, May 23 - Fri, Jun 7
11:02 pm - 5:39 amSEA-PHL
27h 37m1 stop
8:20 am - 12:47 pmPHL-SEA
31h 27m2 stops
$242Frontier
Find Deal
Thu, May 23 - Mon, Jun 10
9:45 pm - 5:56 amSEA-PHL
5h 11mnonstop
7:03 pm - 9:56 pmPHL-SEA
5h 53mnonstop
$302Alaska Airlines
Find Deal
Mon, May 27 - Fri, May 31
9:45 pm - 5:56 amSEA-PHL
5h 11mnonstop
7:15 am - 10:09 amPHL-SEA
5h 54mnonstop
$312Alaska Airlines
Find Deal
Mon, Jun 10 - Tue, Sep 3
10:55 pm - 7:07 amSEA-PHL
5h 12mnonstop
2:20 pm - 7:48 pmPHL-SEA
8h 28m1 stop
$331American Airlines
Find Deal
Tue, Jun 4 - Mon, Jun 10
5:15 pm - 5:42 amSEA-PHL
9h 27m1 stop
6:26 pm - 11:59 pmPHL-SEA
8h 33m1 stop
$346Delta
Find Deal
Wed, Jul 10 - Fri, Jul 12
10:55 pm - 7:07 amSEA-PHL
5h 12mnonstop
5:44 pm - 12:15 amPHL-SEA
9h 31m1 stop
$356American Airlines
Find Deal
Fri, May 31 - Mon, Jun 3
12:40 am - 10:36 amSEA-PHL
6h 56m1 stop
6:26 pm - 11:59 pmPHL-SEA
8h 33m1 stop
$366Delta
Find Deal
Sun, Jun 16 - Thu, Jun 20

Flights from Seattle to Philadelphia - Travel Insights & Trends

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

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

The average price of all flights from Seattle to Philadelphia clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from Seattle to Philadelphia, look for departures on Wednesdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Philadelphia, Tuesday is the cheapest day to fly and Sunday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Seattle to Philadelphia, 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 Philadelphia is October, where tickets cost $298 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $588 and $511 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Seattle to Philadelphia, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Seattle to Philadelphia, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 90 days before departure.

Which airlines provide the cheapest flights from Seattle to Philadelphia?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from Seattle to Philadelphia found on KAYAK was with Frontier for $133. Spirit Airlines proposed a round-trip connection from $234 and Sun Country Air from $235.

Which airlines fly non-stop between Seattle and Philadelphia?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Seattle to Philadelphia.
There are 2 airlines that fly nonstop from Seattle to Philadelphia. They are Alaska Airlines and American Airlines. The cheapest airline for this route is Alaska Airlines, with the best one-way deal found costing $168. On average, the best prices for this route can be found at Alaska Airlines.

How many flights are there between Seattle and Philadelphia per day?

Each day, there are between 4 and 5 nonstop flights that take off from Seattle and land in Philadelphia, with an average flight time of 5h 11m. The most common departure time is 9:00 am and most flights take off in the morning. Each week, there are 33 flights. The most frequent day of departure is Friday, when 15% of all weekly flights depart. The fewest flights depart on a Saturday.

Which cabin class options are there for flights between Seattle and Philadelphia?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from Seattle to Philadelphia take?

The duration of a nonstop flight to Philadelphia from Seattle is typically 4h 57m. The journey crosses a distance of 2,370 miles.

What’s the earliest departure time from Seattle to Philadelphia?

Early birds can take the earliest flight from Seattle at 9:39 am and will be landing in Philadelphia at 5:52 pm.

What’s the latest departure time from Seattle to Philadelphia?

If you prefer to fly at night, the latest flight from Seattle to Philadelphia jets off at 11:35 pm and lands at 7:45 am.

Good to know

Low season

February

High season

August

Cheapest flight

$131
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly with an average 12% increase in price.
Flight from Seattle to Philadelphia

When to book flights from Seattle to Philadelphia

Are your dates flexible? Find out the best times to travel from Seattle to Philadelphia based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to Philadelphia

  • Where can I sleep at Philadelphia International Airport?

    Minute Suites provides private suites you can rent for an hour or two to work, relax, or take a nap after your flight. Each suite has a bed, blankets, pillows, free Wi-Fi, a phone, desk, and HDTV. The facility is located inside security on the terminal A-B link. If you are staying overnight at the airport, book your stay at the Philadelphia Airport Marriott. You can get to the hotel by taking the Sky Bridge from terminal B or the free shuttle that runs every 20 minutes from each terminal.

  • How can I get downtown from Philadelphia International Airport?

    PHL is served by the SEPTA trains and the SEPTA Regional Airport Line provides services from PHL to downtown Philadelphia. You can also take these trains to get to Amtrack connections. SEPTA also runs buses from PHL and routes 37, 108, and 115 provide regular service to downtown Philadelphia. You can also take taxis or shared rides from the ground transportation area of each terminal. Taxis operating from PHL are metered but have a minimum $10 charge for all destinations.

  • Does Seattle-Tacoma International Airport offer family services?

    SEA has provided private nursing spots for breastfeeding parents dubbed the Mothers Room. These rooms offer comfortable seating, rocking chairs, adjustable lighting, baby changing tables, and more. You’ll find the Mothers Room around the kids’ play area and there is also one in the USO lounge. SEA also provides nursing suites with the same facilities available around the S Gate mezzanine level and gates C10, N2, A9, D10, and D23. SEA has a kids’ play area between the central terminal and A Gates for the older kids.

  • Does Seattle-Tacoma International Airport offer accessibility services?

    SEA is ADA-compliant, and passengers with limited mobility have access to wheelchair assistance at the airport. These passengers will also have access to accessible transportation, accessible restrooms, stair-free pathways, reserved parking spots, and fast-track services. Low-vision passengers will have free Aira services at SEA, while hard-of-hearing passengers get visual paging and TTY telephones.

  • What is the cheapest flight from Seattle to Philadelphia?

    In the last 3 days, the lowest price for a flight from Seattle to Philadelphia was $131 for a one-way ticket and $234 for a round-trip.

  • Do I need a passport to fly between Seattle and Philadelphia?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airlines offer Wi-Fi service onboard planes from Seattle to Philadelphia?

    All the following airlines offer inflight Wi-Fi service on the Seattle to Philadelphia flight route: Alaska Airlines, JetBlue, American Airlines, Delta, Air Canada, Sun Country Air, Air France, KLM, and Aeromexico.

  • Which aircraft models fly most regularly from Seattle to Philadelphia?

    The Boeing 737 MAX 9 is the aircraft model that flies most regularly on the Seattle to Philadelphia flight route.

  • Which airline alliances offer flights from Seattle to Philadelphia?

    oneworld is the only airline alliance operating flights between Seattle and Philadelphia.

  • On which days can I fly direct from Seattle to Philadelphia?

    There are nonstop flights from Seattle to Philadelphia on a daily basis.

  • Which is the best airline for flights from Seattle to Philadelphia, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Seattle to Philadelphia are Alaska Airlines and Delta. With an average price for the route of $425 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $398 and an overall rating of 8.0.

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

    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 Philadelphia.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Philadelphia from Seattle 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 Philadelphia?

    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 to Philadelphia with an airline and back to Seattle with another airline. Booking your flights between Seattle and PHL can sometimes prove cheaper using this method.

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

    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 to Philadelphia from Seattle 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 a cheap flight from SEA to Philadelphia

  • Looking for a cheap flight? 25% of our users found flights on this route for $188 or less one-way and $398 or less round-trip.
  • Seattle-Tacoma International Airport (SEA) is a major transportation hub. It has four terminals, the main and central terminals are next to each other; then there are the north and south satellite terminals. SEA has an airport train running every 10 minutes providing inter-terminal connections.
  • Are you visiting Philadelphia International Airport (PHL) with your pet? The airport has provided pet facilities known as Pet Ports at PHL. There’s at least one in each terminal after security and outdoor areas are outside the baggage claim areas and the departing flights road.
  • On average around 1,066 kg of carbon is emitted on flights from Seattle to Philadelphia. If you wish to fly more sustainably, book your flight with United Airlines. They offer an eco-friendly flight emitting 42% less carbon per passenger on this route.
  • Do you need banking or currency exchange services before your flight? US Bank runs a full-service branch at SEA. You’ll find the bank in the main terminal between security checkpoints 3 and 4.
  • If you got urgent business to attend to after your flight, visit the UPS Store at PHL. The establishment offers business services including copying, faxing, shipping, and notary services. They also have workstations with computers. The establishment is inside security around the terminal A/B walkway.
See more tips

Prefer to fly non-stop from Seattle to Philadelphia?

Find which airlines fly direct from Seattle/Tacoma Intl to Philadelphia, which days they fly and book direct flights.

Nonstop departures

Seattle/Tacoma Intl to Philadelphia

Monday

Air Tahiti Nui, Alaska Airlines, American Airlines

Air Tahiti Nui, Alaska Airlines, +1 more

Tuesday

Air Tahiti Nui, Alaska Airlines, American Airlines, +1 more

Air Tahiti Nui, Alaska Airlines, +2 more

Wednesday

Air Tahiti Nui, Alaska Airlines, American Airlines

Air Tahiti Nui, Alaska Airlines, +1 more

Thursday

Air Tahiti Nui, Alaska Airlines, American Airlines, +3 more

Air Tahiti Nui, Alaska Airlines, +4 more

Friday

Air Tahiti Nui, Alaska Airlines, American Airlines

Air Tahiti Nui, Alaska Airlines, +1 more

Saturday

Air Tahiti Nui, Alaska Airlines, American Airlines, +1 more

Air Tahiti Nui, Alaska Airlines, +2 more

Sunday

Air Tahiti Nui, Alaska Airlines, American Airlines

Air Tahiti Nui, Alaska Airlines, +1 more

See more direct flights

Nonstop returns

Philadelphia to Seattle/Tacoma Intl

Monday

Air Tahiti Nui, Alaska Airlines, American Airlines, +2 more

Air Tahiti Nui, Alaska Airlines, +3 more

Tuesday

Air Tahiti Nui, Alaska Airlines, American Airlines, +3 more

Air Tahiti Nui, Alaska Airlines, +4 more

Wednesday

Air Tahiti Nui, Alaska Airlines, American Airlines, +2 more

Air Tahiti Nui, Alaska Airlines, +3 more

Thursday

Air Tahiti Nui, Alaska Airlines, American Airlines, +3 more

Air Tahiti Nui, Alaska Airlines, +4 more

Friday

Air Tahiti Nui, Alaska Airlines, American Airlines, +2 more

Air Tahiti Nui, Alaska Airlines, +3 more

Saturday

Air Tahiti Nui, Alaska Airlines, American Airlines, +3 more

Air Tahiti Nui, Alaska Airlines, +4 more

Sunday

Air Tahiti Nui, Alaska Airlines, American Airlines, +2 more

Air Tahiti Nui, Alaska Airlines, +3 more

See more direct flights
See more direct flights

Top 5 airlines serving from Seattle to Philadelphia

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Philadelphia. 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 Philadelphia? 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 9147 reviews
7.9Comfort
7.3Food
7.3Entertainment
8.2Boarding
8.6Crew
Airline reviews

The flight was decent again if there was a place that you could put crying children that would be great. Or maybe make a rule against allowing infants on the plane.

6.0 GoodAnonymous, May 2024SEA - HNL
Read more about Alaska Airlines reviews

The flight was decent again if there was a place that you could put crying children that would be great. Or maybe make a rule against allowing infants on the plane.

Everything was fine -- on time, clear, clean. I don't want to pay extra for in-flight wi-fi

The flight was delayed because the pilots had not arrived on their previous flight yet. The flight was 100% full so it was pretty crowded. I miss having the screens on the back of the seats. It would be great if the Alaska planes had the clip so you can put your phone or tablet on the back of the seat in front of you to not strain your neck. Everything else was very smooth.

It was fine since it ensure we went to our destination in time.

I bought the cheapest ticket. No meal, no checked luggage so I didn't expect much and was surprised by how good the flight and service was. Alaska is now my favorite airline.

No entertainment, food was cookies & juice,water, soda or coffee.

My baggage was in another flight, anit was delayed for one hour.

The maintenance delay was seemingly handled very poorly... Little to no information was provided to the passengers sitting on board for an extended period of time. On a brighter note, at least the cabin crew (flight attendants) did the best they could. They seemingly were provided very little information with regards to the delay. Unless absolutely beyond my control, I can’t imagine buying a ticket on Alaska airlines again, based on this and a previous experience my wife recently had, along with complaints overheard from other passengers.

The only issue was in the wheelchair waiting area before we got on the plane. They seemed very disorganized. Everyone we encountered after that was great! We loved Cassandra at check-in. She was awesome. The flight attendants were wonderful too! The lady helping with the waiting wheelchair when we got off the plane was awesome too!

Expect to get miles for us having to miss our first planned flight due to them waiting on passengers that decided to be late to the airport.

Had a broken tray in business class. Crew just shrugged it off.

Everything was great except for the seat. The backrest would not stay in the upright position.

Carly the flight attendant was extremely helpful and very accommodating to passengers on the flight from what I noticed. Couldn't be more satisfied with the service and assistance from Delta's flight attendant, Thanks again Carly!!

public website still broken for years randomly blocking browsers with privacy options active after loading a page maybe once. check-in on laptop was almost impossible but eventually randomly worked. had to print pass at airport since couldn't get back in to load digital pass on mobile firefox or chrome. red eye flight so smooth onboarding, plenty of room to spread out, easy offboarding. onboard wifi instructions mention vpn can cause problems connecting but fails to also mention private dns. no printed or built in menu list, seems weird to require personal device to point at qr code link for menu which does not even allow direct ordering. people with health condition risk related dietary restrictions trying to avoid for example cholesterol and sugar are left guessing what they can order either way without nutritional info highlights (cranberry juice was minute maid cocktail with as much suger as typical can of soda). tap to pay wasn't working and always seems sketchy to manually enter card info. good movie variety, so limited tv was okay.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Mi primera conexión se retrasó por lo cual perdí mi segunda conexión la cual salió adelantada

Crew was not friendly when I went to request a seat change.

There were choices for the snacks. Good choices and tasty lunch and breakfast as well.

The flight crew was amazing. I’m very tall and they moved me to an exit row unsolicited!!! Amazing service.

Surprisingly easy! I was hesitant to try this, but the cost swayed me. I actually felt like I had less stress than all the taxiing and possible delays that occur with short regional flights where you spend less time in the air than getting to and from the plane..

This flight was delayed multiple times and eventually canceled around 2-3ish. Original take off time was around 10:30am. By 3, there were no other options out of Houston, so stuck in Houston for from 3pm - 11am the next day.

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

The plane was dirty and the in seat air wasn't blowing as planes usually do.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

All flights were on time and boarding was issue free

Terrible! The plane was old and you are required to connect your own device to their Wi-Fi rather than have entertainment options in the back of the seat in front of you. The Wi-Fi went out during the flight and there was only one plug for the devices every two seats. Three out of five surrounding my family did not work. The seats and spaces under them were so small I could not fit my backpack, which I’ve always brought on flights and fit before no problem. The crew were unpleasant and patronizing.

Great! The plane was decently sized and comfortable. The staff was nice and there was great in flight entertainment

Great crew. We were delayed so that late passengers could get on the flight. Love the bedding in business class. Good food. Great experience.

Too bad that first class seats do not recline significantly causing discomfort

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

Food options were limited which is absolutely embarrassing for a Flight of this size The staff did not come around as much and I am not accustomed to such poor service from American Airlines Drinks I believe were limited to soda and water

Was as expected. Good leg room on planes - much appreciated.

Smaller, regional aircraft limits amount of overhead luggage space. At least there were jetways at both BNA and PHL. First class food service was minimal with the usual assortment of packaged snacks (nothing creative) and no handiwipes. American tries to turn around aircraft too quickly without enough time to clean the planes. WIFI service did not include TV programming.

6 plus hour delay with no explanation. No wheelchairs to transport us on arrival. Very disappointed.

Food choice is limited, entertainment better than average, seat leg room terrible

While I received notice that AA 478 was delayed, the flight departed PHX and arrived PHL more than two hours late. The first class cabin service was mediocre; there were no pre-departure beverages offered; there were no warm mixed nuts served with cocktails; there was no personal greeting to me as an Executive Platinum member by the first class flight attendant. While the flight operated safely, its arrival at 0219 in the morning in PHL ended a very long day. I do not feel that American provided first class service.

Late arrival due to gate being blocked by stalled truck

I didn't get to do this flight l, hard to review

Not good 😐 Over priced baggage fees Small hard seats No wifi or entertainment options 😕

Didn't like anything!! Horrible flight. Small seating area and hard seats. Butt was sore after 2 hour flight to Seattle No entertainment or free refreshments No wifi or USB charging receptacles to charge phone entoute like other airliners Luggage rates were 3 times as much as competitors. Difficult to navigate online luggue process to pre pay before flight Overall bad experience WILL NEVER RIDE OR RECOMMEND FRONTIER TO FRIENDS OR FAMILY MEMBERS!!! THIS IS A SHAME!! MOST MESERIBLE FLIGHT OF MY LIFE!! AND I THOUGHT SPIRIT WAS 👎 YOU GOT THEM BEAD HANDS DOWN!!

Flight was a little late taking off. Seats are too upright, no ports to charge devices, no wifi, no entertainment

Six hour delay. Poor customer service. No voucher. Bad communication. Missed important appointments.

Our flight was delayed an hour, then when we got to board our flight finally, we were waiting in our seats for take off for 45 minutes before it was communicated that there was a maintenance issue therefore we waited on the plane for over an hour while that was resolved. We did not get to Phoenix until almost 3 hours after we were originally supposed to. This was the first and last time I will be flying Frontier.

Flight was canceled with little warning. Flight was rebooked through Ontario, California and connecting flight was delayed by over three hours. Frontier is living up to their Greyhound of the skies reputation for sure.

I purchased a carry on bag online…was supposed to cost $72 but after a whole slew of bs charges, the total was over $175.00. Because of these hidden charges, I will not even consider flying Frontier ever again. It’s just not worth the hassle. I’m scratching this company off my list forever.

Flight was OK. Seats were good no cell phone charges on the plane no TVs or entertainment.

There were 3 leg for the trip and each leg was delayed by 90 minutes or more. The boarding process takes forever with people waiting on the jetway even though most folks do not have carry-on. The whole process is poorly managed.

Book cheap flights from Seattle to Philadelphia

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Seattle to Philadelphia found on KAYAK in the last 72 hours.
6/17Mon
3 stops
34h 24mSEA-PHL
$131
7/28Sun
1 stopFrontier
28h 40mSEA-PHL
$133
5/30Thu
nonstopAmerican Airlines
5h 12mSEA-PHL
$144
6/11Tue
nonstopAlaska Airlines
5h 11mSEA-PHL
$149
5/29Wed
1 stopDelta
6h 55mSEA-PHL
$153
7/10Wed
nonstopAlaska Airlines
5h 02mSEA-PHL
$154
5/29Wed
1 stopDelta
6h 55mSEA-PHL
$158
5/31Fri
nonstopAmerican Airlines
5h 12mSEA-PHL
$174
7/1Mon
1 stopUnited Airlines
6h 54mSEA-PHL
$205
5/30Thu
2 stopsUnited Airlines
11h 30mSEA-PHL
$274

Search by stops

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Search by price

Last minute flights from Seattle to Philadelphia

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 Philadelphia that are departing in the next 10 days.
5/11Sat
multi-stopSun Country Air
13h 36mSEA-PHL
5/22Wed
multi-stopSun Country Air
7h 50mPHL-SEA
$258
5/12Sun
multi-stopFrontier
28h 15mSEA-PHL
5/17Fri
multi-stopFrontier
15h 55mPHL-SEA
$273
5/10Fri
nonstopAmerican Airlines
5h 12mSEA-PHL
5/11Sat
multi-stopAmerican Airlines
11h 56mPHL-SEA
$679
5/11Sat
multi-stopUnited Airlines
11h 45mSEA-PHL
5/15Wed
multi-stopUnited Airlines
14h 03mPHL-SEA
$704
5/9Thu
multi-stopAmerican Airlines
8h 24mSEA-PHL
5/10Fri
multi-stopAmerican Airlines
11h 21mPHL-SEA
$730
5/11Sat
multi-stopUnited Airlines
11h 59mSEA-PHL
5/15Wed
multi-stopUnited Airlines
13h 12mPHL-SEA
$733
5/9Thu
multi-stopDelta
6h 55mSEA-PHL
5/26Sun
multi-stopDelta
7h 32mPHL-SEA
$762
5/10Fri
multi-stopDelta
8h 12mSEA-PHL
5/18Sat
multi-stopDelta
7h 40mPHL-SEA
$775
5/10Fri
nonstopAlaska Airlines
5h 12mSEA-PHL
5/26Sun
nonstopAlaska Airlines
5h 46mPHL-SEA
$797
5/11Sat
nonstopAlaska Airlines
5h 12mSEA-PHL
5/22Wed
nonstopAlaska Airlines
5h 46mPHL-SEA
$811

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Seattle - Philadelphia Flights

Departure:

Seattle (undefined)United States

Destination:

Philadelphia (PHL)United States

Return flight deals:

Philadelphia - Seattle

Cabin classes:

$912
$675
$1,845
$276