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SEA - PHL

$89 Find cheap flights from Seattle to Philadelphia

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 8/27. 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
Fri 7/5
Fri 7/12

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 44,281,614 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
8:59 pm - 7:12 pmSEA-PHL
19h 13m2 stops
8:06 pm - 8:32 amPHL-SEA
15h 26m2 stops
$191Spirit Airlines
Find Deal
Mon, Jun 24 - Tue, Jul 2
3:54 pm - 5:46 amSEA-PHL
10h 52m1 stop
6:49 am - 1:11 pmPHL-SEA
9h 22m1 stop
$195Spirit Airlines
Find Deal
Tue, Aug 20 - Tue, Aug 27
10:08 pm - 5:37 amSEA-PHL
28h 29m1 stop
8:34 pm - 8:37 amPHL-SEA
15h 03m1 stop
$202Frontier
Find Deal
Wed, Sep 4 - Wed, Sep 11
10:08 pm - 6:08 pmSEA-PHL
17h 00m1 stop
1:19 pm - 8:37 amPHL-SEA
22h 18m1 stop
$217Frontier
Find Deal
Wed, Sep 4 - Mon, Sep 23
11:59 pm - 11:13 amSEA-PHL
8h 14m1 stop
7:30 am - 8:12 amPHL-SEA
27h 42m1 stop
$250Sun Country Air
Find Deal
Wed, Jul 10 - Sun, Jul 14
9:39 pm - 5:40 amSEA-PHL
5h 01mnonstop
6:59 pm - 9:56 pmPHL-SEA
5h 57mnonstop
$287Alaska Airlines
Find Deal
Wed, Sep 4 - Sat, Sep 21
12:35 am - 10:37 amSEA-PHL
7h 02m1 stop
4:44 pm - 11:58 pmPHL-SEA
10h 14m1 stop
$306Delta
Find Deal
Tue, Sep 3 - Tue, Sep 24
9:39 pm - 5:40 amSEA-PHL
5h 01mnonstop
6:59 pm - 9:56 pmPHL-SEA
5h 57mnonstop
$307Alaska Airlines
Find Deal
Fri, Sep 6 - Tue, Sep 10
11:59 pm - 10:47 amSEA-PHL
7h 48m1 stop
12:27 pm - 10:53 pmPHL-SEA
13h 26m1 stop
$310Sun Country Air
Find Deal
Mon, Jul 8 - Mon, Jul 15
12:35 am - 10:37 amSEA-PHL
7h 02m1 stop
4:58 pm - 10:25 pmPHL-SEA
8h 27m1 stop
$326Delta
Find Deal
Wed, Aug 7 - Sat, Aug 17

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, Wednesday 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 $576 and $506 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 Spirit Airlines for $89. Spirit Airlines proposed a round-trip connection from $191 and Frontier from $202.

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 05m. The most common departure time is 9:00 am and most flights take off in the morning. Each week, there are 34 flights. The most frequent day of departure is Wednesday, when 15% of all weekly flights depart. The fewest flights depart on a Sunday.

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 9:19 am and will be landing in Philadelphia at 5:26 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 11:40 pm and lands at 7:38 am.

Good to know

Low season

February

High season

August

Cheapest flight

$89
Best time to beat the crowds with an average 23% drop in price.
Most popular time to fly with an average 10% 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 $89 for a one-way ticket and $191 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, American Airlines, JetBlue, 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 $416 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 $399 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

KAYAK’s top tips for finding a cheap flight from Seattle to Philadelphia

  • Looking for a cheap flight? 25% of our users found flights on this route for $183 or less one-way and $417 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 9219 reviews
7.9Comfort
7.3Food
8.2Boarding
8.6Crew
7.3Entertainment
Airline reviews

I was sitting in row 31 and felt bad smell coming from the toilets especially when boarding and exiting not much during the flight.

8.0 ExcellentAnonymous, Jun 2024SEA - DFW
Read more about Alaska Airlines reviews

I was sitting in row 31 and felt bad smell coming from the toilets especially when boarding and exiting not much during the flight.

Great. They got us on an earlier flight. Really appreciated that

I had very little legroom and the only food available was really salty

Offer snacks/meals for people with food sensitivities. HAVE TV SCREENS!

Cabin crew very friendly and pleasant. Flight left late but we didn't know why. Alaska Airlines app was not user friendly -- app wouldn't let us upgrade our seats, but no indication if flight was full. We wound up having to call the airline to request an upgrade and we were told none was available. Waste of time. Baggage retrieval was easy.

The boarding gate is literally just an aisle to the concourse. There is no seating and it's shared with several other airlines. It's crowded, hot, and standing-room only. It's difficult to hear gate announcements over the PA system with too many other carriers crammed into a small space. I've enjoyed flying AA in the past on the west coast, but the BNA single gate experience is horrendous! Never again from BNA to SEA with AA.

It was a partial full flight. But even with a spare seat it was hard to get comfortable More on me being a wide body probably

Our flights using Alaska Airlines went great! All of the flight attendants were very friendly. Big shout out to the pilots for getting us to and from our destinations safely!

I can’t complain. Perhaps passing out headphones, but it was on me to bring my own since I could have used some for my personal device.

I liked only the crew. The flyght was too much fast, faster than it should be, on 20 min faster, but not safer, I experienced on myself astranautic overload from suddenly appearing in the sky and all the vibrations of the turbines, because I had my place at the level of the wings. Pregnant woman should not be seated on the level of the wings with all turbines, pregnant woman should be offered to charge place to seat closer to front or in the back, but not at the level of all the turbines. Vibrations of turbines are not healthy for pregnancy. I hold all the flight my belly in my hands to avoid miscarriage. If it would be longer flying distances, I could have miscarriage with Alaskan airlines.

The plane from SNA wouldn’t start after 5 tries. The team gave me an option of flying direct from LAX and giving me a Lyft ride there! Perfect!

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.

After the morning frenzy of 35 min wait through CLT security at 4;30 AM, it was nice to have a smooth pleasant boarding experience. This 6:30 AM flight was not full. We were able to get seated swiftly and took off promptly. Nice touch they distributed the old fashioned headsets with 8 mm jacks. Snacks were decent and arrival was uneventful.

My window shade didn’t work. So I missed coming into my city. ☹️

Flight was delayed in the gate by 5 hours and ultimately cancelled- rebooking service by United agents was terrible

Flight was delayed due to the late arrival of the catering truck, which is quite unacceptable. There was a beverage service, but no pretzel, or cookie, or nuts were served in coach.

Not worth the price of premium class ticket paid, felt more like steerage.

Flighty delayed on boarding - then group 1 had to check their carry on bags but groups 3 and beyond could carry bags on - very inconvenient for weekend business trip with no checked baggage. Then delayed on the runway - before take off. No communication from pilot on why or how long. Wifi/Entertainment didn't work for 4+ flight. Upon arrival, attendants announced wrong carousel for baggage claim - everyone was waiting at the wrong place for their checked bags. This was a mess united!

I had a great flight. Everything went smoothly and the flight arrived early.

The flight and boarding were easy peasy. I was traveling with my 4-year-old, so a smooth boarding experience was especially appreciated. My only piece of feedback is really about where our gate was in O'Hare. They've shoved four gates into a tiny corner of the B terminal and there isn't early enough room or seating for everyone. Not United's problem, but did dent the overall experience.

Dinner was okay but the breakfast was not eatable on the flight San Francisco to Zurich.

There was no screens on board AND the WiFi didn’t work. My seat was broken and couldn’t recline so I couldn’t even sleep. The flight attendants didn’t offer anything to make it more comfortable. It was such an old cramped plane, when the person in front of me reclined I couldn’t even open my tray table. All the United ads talk about guaranteeing everyone gets a screen!

Equipment swap led to 2+ hour delay on international flight. And to top it off, boarding took forever.

The boarding process and flight were great. However, I waited about 40 minutes for my luggage. It did not come up on the designated belt. Instead, everyone’s bags were on a cart. Not sure what the issue was, but we were not informed until another passenger went looking for her bags and found them.

Tray table was filthy when I sat down. I needed to have someone come clean it because there was food and stains on it WiFi didn’t work after paying for in-flight WiFi. Food was terrible and was not filling at all Chicken was rubbery Flight attendant had an attitude, interrupted me and wasn’t able to answer basic questions about the food selection such as “does the chicken have red sauce in it”. If your flight attendants are not going to know what is in the meals so we can make an educated decision based on dietary restrictions, they shouldn’t be on the plane. My 1.5 year old niece was sleeping and dropped her binkie. I went on the ground under the chairs looking for it. It was at that time that she came up to me as I’m CLEARLY on all 4s with a flashlight and said “I need to get by”. I said one moment please I’m getting something from under the seat (while my head was literally under the seat). Her reply was “no you need to move now” and proceeded to almost push me out of the way. I looked up and all I saw was her toes under my eyes. When I looked in front of me, her private parts were inches away from my face. I then made a comment “you couldn’t waited 2 seconds?” and her response was, “no I need to use the bathroom”. I understand that and would never want to be the reason someone couldn’t get to the bathroom but I was under the seat. She could’ve gone around the other way instead of harassing me, basically placing her private parts on my head and borderline pushing me out of the way. You don’t pay that much for this deplorable experience. This was by far the worst experience I have ever had on American. I will be absolutely thinking twice and thrice about flying American Airlines again. I would rather pay more to fly delta because at least I know their WiFi will work and their flight attendants won’t have a shitty attitude for no reason, nor will they act the way this woman did. Unacceptable.

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.

FRONTIER SUCKS! The agent downstairs tricked me into booking, just to get to the gate. At the gate, they told me they couldn't help. I then called Customer Service. They and the gate attendants kept blaming each other. Neither side was willing to help the customer.

The agent at check-in was strident, unwelcoming, and condescending to customers ahead of me.

Flight was delay 9hrs and nothing was provided at airport, had to go and get a room to sleep in, paid for Uber back and fort with no offers until we landed back home a 1hr later for a $75 voucher for a future flight.

Didn't like anything..entire crew was very rude to everyone on the flight. Plane old and the trays fall down on you the while time you're flying. Charged more for a carry on bag than for the plane ticket itself. Did make it from point a to point b, but worth the extra money to fly with another airline

9 hours of delay!! Was not able to check my luggage that I paid for!!!

It was delayed 9 hours for operational reasons, despite the plane arriving to the airport on time.

I am very disappointed with Frontier Airlines. They cancelled our flight because they couldn't find a crew member, and then didn't get us to our connecting flight. We had to cancel our whole vacation. We were promised flight and hotel vouchers, but they never sent them.

9hrs delay and didn’t provided anything until after flight landed $75 voucher for fiuture travel no meals or anything.

It was ridiculously hard to check in for the flight, and Frontier charged us a LOT of money to have a carry on suitcase, and then told everyone we could not carry on bags and had to check them through at the gate, and didn't refund the extra money we paid to have the suitcase as carry on.

I had a terrible experience with Frontier. I arrived before the 60 minute cut off and was told that Frontier has a two hour window for bags. I was then told the next available flight wasn’t until the end of the day (I had booked a 6am flight). I took a look around and saw other people being told that they could not board their flights or that they had to pay additional fees. I opted to rebook on American Airlines. There’s absolutely no straightforward way to contact Frontier, so this ticket was a complete waste of money. Oh - and the kicker is that the lady lied about the two hour cut off.

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.
8/27Tue
1 stopSpirit Airlines
12h 01mSEA-PHL
$89
7/8Mon
2 stopsSpirit Airlines
19h 13mSEA-PHL
$94
7/8Mon
2 stopsSpirit Airlines
19h 13mSEA-PHL
$95
8/31Sat
1 stopFrontier
28h 29mSEA-PHL
$101
9/18Wed
1 stopFrontier
15h 04mSEA-PHL
$103
7/10Wed
nonstopAmerican Airlines
4h 59mSEA-PHL
$143
7/10Wed
nonstopAmerican Airlines
4h 59mSEA-PHL
$144
7/8Mon
1 stopDelta
7h 02mSEA-PHL
$153
10/12Sat
1 stopDelta
7h 22mSEA-PHL
$168
7/22Mon
nonstopAlaska Airlines
5h 02mSEA-PHL
$174

Search by stops

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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.
6/10Mon
multi-stopSpirit Airlines
33h 01mSEA-PHL
7/2Tue
multi-stopSpirit Airlines
15h 26mPHL-SEA
$230
6/10Mon
multi-stop
13h 14mSEA-PHL
7/10Wed
multi-stop
27h 45mPHL-SEA
$236
6/6Thu
multi-stopFrontier
13h 24mSEA-PHL
9/29Sun
multi-stopFrontier
15h 03mPHL-SEA
$247
6/6Thu
multi-stopFrontier
13h 24mSEA-PHL
10/2Wed
multi-stopFrontier
15h 03mPHL-SEA
$251
6/6Thu
nonstopAlaska Airlines
5h 11mSEA-PHL
10/1Tue
nonstopAlaska Airlines
6h 06mPHL-SEA
$597
6/10Mon
multi-stopDelta
6h 56mSEA-PHL
6/20Thu
multi-stopDelta
8h 15mPHL-SEA
$611
6/8Sat
multi-stopDelta
6h 30mSEA-PHL
10/5Sat
multi-stopDelta
9h 58mPHL-SEA
$615
6/6Thu
nonstopAlaska Airlines
5h 11mSEA-PHL
10/4Fri
nonstopAlaska Airlines
6h 07mPHL-SEA
$617
6/9Sun
multi-stopAmerican Airlines
8h 32mSEA-PHL
7/10Wed
nonstopAmerican Airlines
6h 18mPHL-SEA
$743
6/10Mon
multi-stopAmerican Airlines
8h 32mSEA-PHL
6/20Thu
nonstopAmerican Airlines
6h 13mPHL-SEA
$756

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Seattle - Philadelphia Flights

Departure:

Seattle (SEA)United States

Destination:

Philadelphia (PHL)United States

Return flight deals:

Philadelphia - Seattle

Cabin classes:

$958
$1,122
$1,614
$306