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PHL - SEA

Find cheap flights from Philadelphia to Seattle from $81

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Philadelphia to Seattle departing on 5/16. 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 5/24
Fri 5/31

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Seattle.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Philadelphia to Seattle.
In the last 7 days travelers have searched 44,979,812 times on KAYAK, and here is why:

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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Philadelphia to Seattle 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
8:17 pm - 8:45 amPHL-SEA
15h 28m1 stop
9:49 pm - 5:34 amSEA-PHL
28h 45m1 stop
$118Frontier
Find Deal
Thu, May 16 - Thu, May 23
8:17 pm - 8:45 amPHL-SEA
15h 28m1 stop
9:49 pm - 5:34 amSEA-PHL
28h 45m1 stop
$119Frontier
Find Deal
Thu, May 16 - Thu, May 23
4:35 pm - 8:45 amPHL-SEA
19h 10m2 stops
9:40 pm - 10:59 pmSEA-PHL
22h 19m2 stops
$262Spirit Airlines
Find Deal
Tue, May 21 - Tue, May 28
8:00 am - 8:45 amPHL-SEA
27h 45m3 stops
9:40 pm - 10:59 pmSEA-PHL
22h 19m2 stops
$263Spirit Airlines
Find Deal
Tue, May 21 - Tue, May 28
6:30 pm - 9:33 pmPHL-SEA
6h 03mnonstop
10:54 pm - 7:00 amSEA-PHL
5h 06mnonstop
$277American Airlines
Find Deal
Wed, Sep 4 - Tue, Sep 10
1:57 pm - 8:43 pmPHL-SEA
9h 46m1 stop
10:54 pm - 7:00 amSEA-PHL
5h 06mnonstop
$285American Airlines
Find Deal
Wed, Sep 18 - Tue, Sep 24
3:20 pm - 11:56 pmPHL-SEA
11h 36m1 stop
5:40 am - 5:37 pmSEA-PHL
8h 57m1 stop
$296Delta
Find Deal
Tue, Sep 24 - Sat, Sep 28
7:03 pm - 9:56 pmPHL-SEA
5h 53mnonstop
9:45 pm - 5:56 amSEA-PHL
5h 11mnonstop
$297Alaska Airlines
Find Deal
Wed, Jun 5 - Wed, Jun 12
7:03 pm - 9:56 pmPHL-SEA
5h 53mnonstop
9:45 pm - 5:56 amSEA-PHL
5h 11mnonstop
$308Alaska Airlines
Find Deal
Fri, May 31 - Sun, Jun 2
6:40 pm - 11:59 pmPHL-SEA
8h 19m1 stop
6:30 am - 4:32 pmSEA-PHL
7h 02m1 stop
$326Delta
Find Deal
Mon, Sep 16 - Sat, Sep 21

Flights from Philadelphia to Seattle - Travel Insights & Trends

Get data-powered insights and trends into flights from Philadelphia to Seattle 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 Philadelphia to Seattle?

The average price of all flights from Philadelphia to Seattle clicked on KAYAK for each day over the last 12 months.
When flying from Philadelphia to Seattle, you should consider leaving on a Tuesday and avoid Sundays if you are looking for the best rates. For your return to Philadelphia, you’ll find the best rates on Wednesdays and the most expensive ones on Sundays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Philadelphia to Seattle, 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 Philadelphia to Seattle is October, where tickets cost $304 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $622 and $616 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Philadelphia to Seattle, 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 Philadelphia to Seattle, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 63 days before departure.

Which airlines provide the cheapest flights from Philadelphia to Seattle?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting Philadelphia to Seattle were found on Frontier ($118) and Sun Country Air ($255). Frontier proposed the cheapest one-way flight at $81.

Which airlines fly non-stop between Philadelphia and Seattle?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Philadelphia to Seattle.
There are 2 airlines that fly nonstop from Philadelphia to Seattle. They are Alaska Airlines and American Airlines. The cheapest airline for this route is Alaska Airlines, with the best one-way deal found costing $159. On average, the best prices for this route can be found at Alaska Airlines.

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

Each day, there are between 3 and 4 nonstop flights that take off from Philadelphia and land in Seattle, with an average flight time of 5h 56m. The most common departure time is 6:00 pm and most flights take off in the evening. Each week, there are 27 flights. The most frequent day of departure is Saturday, when 15% of all weekly flights depart. The fewest flights depart on a Friday.

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

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 Philadelphia to Seattle take?

Direct flights take on average 5h 46m to travel the 2,370 miles between Philadelphia and Seattle.

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

Early birds can take the earliest flight from Philadelphia at 7:00 am and will be landing in Seattle at 9:51 am.

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

If you prefer to fly at night, the latest flight from Philadelphia to Seattle jets off at 7:03 pm and lands at 9:56 pm.

Good to know

Low season

February

High season

August

Cheapest flight

$81
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 14% increase in price.
Flight from Philadelphia to Seattle

When to book flights from Philadelphia to Seattle

Are your dates flexible? Find out the best times to travel from Philadelphia to Seattle 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 Philadelphia to Seattle

  • What are some of the top hotels that are located close to the Seattle-Tacoma International Airport?

    If you are searching for a hotel near Seattle-Tacoma-Intl-(SEA), you may want to have a look at the Hampton Inn & Suites Seattle-Airport and La Quinta by Wyndham Seattle Sea-Tac Airport. All of them have a good connection to the airport in case your flight arrives late.

  • What transportation options are there for accessing the Philadelphia International Airport?

    The Regional Rail's Airport Line Service is the most convenient way to get to Philadelphia International Airport from the city center. This service makes stops at all of the main airport terminals, in addition to University City, Center City, and the area close to Temple University. Access is provided to every station that is serviced by the Airport Line.

  • What services are available for passengers with reduced mobility?

    You may book special help to go through security and reach your gate in advance at PHL airport. The airport has accessible facilities as well as additional assistance for those with a concealed disability. Seattle-Tacoma International Airport (SEA) provides accessible services at the arrival airport such as wheelchairs and adapted bathrooms.

  • Where can I find family restrooms at Seattle-Tacoma International Airport?

    Family bathrooms are conveniently located next to all multi-user toilet facilities and are open for use by any and all customers. These restrooms can be found on the floors of the Main Terminal that are designated for Ticketing and Baggage Claim, as well as on the levels that are designated for Concourses A, B, C, and D, and in both the North and South Satellites. In addition, these restrooms can be found on the levels that are designated for Concourses A, B, C, and D. In the family restrooms of the North Satellite, there are two adult-sized changing tables. You may get step-by-step instructions by using the airport's interactive map.

  • What is the cheapest flight from Philadelphia to Seattle?

    In the last 3 days, the lowest price for a flight from Philadelphia to Seattle was $81 for a one-way ticket and $118 for a round-trip.

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

    No, a passport isn't needed to fly from Philadelphia to Seattle. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Philadelphia to Seattle?

    Philadelphia and Seattle are both served by 1 main airport. You will leave Philadelphia from Philadelphia and will be arriving at Seattle/Tacoma Intl.

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

    Alaska Airlines, American Airlines, Air Canada, JetBlue, and Delta offer inflight Wi-Fi service on the Philadelphia to Seattle flight route.

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

    The Boeing 737-900 Passenger/BBJ3 (winglets) is the aircraft model that flies most regularly on the Philadelphia to Seattle flight route.

  • Which airline alliances offer flights from Philadelphia to Seattle?

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Philadelphia to Seattle are Alaska Airlines and Delta. With an average price for the route of $428 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 $347 and an overall rating of 8.0.

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

    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 Philadelphia to Seattle.

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

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

    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 Seattle with an airline and back to Philadelphia with another airline. Booking your flights between Philadelphia and SEA 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 Philadelphia to Seattle?

    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 Seattle from Philadelphia 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 PHL to Seattle

  • Looking for a cheap flight? 25% of our users found flights on this route for $229 or less one-way and $421 or less round-trip.
  • Make use of the lounges that are offered at both the airport where you are departing and the airport where you are arriving. At Philadelphia International Airport (PHL), there are a number of United Club Lounges, and at Seattle-Tacoma International Airport (SEA), there are a number of United Club Lounges, both of which provide amenities such as meals and showers.
  • When traveling through Philadelphia International Airport, nursing mothers now have a new alternative available to them if they want their privacy: a nursing pod. In the room, not only will you have complete privacy, but there will also be a bench and a table that folds out from under the seat, in addition to an electrical outlet.
  • If you require parking near the airport, there are a number of private lots in close proximity to PHL that provide both short-term and long-term parking options. The operators provide users with transportation to and from the airport as part of their service.
  • If you are traveling with your family, SkySquad provides professional, pre-screened personal assistants for hire to assist with PHL airport navigation from the moment you arrive until you board the airplane. This fee-based program offers assistance to travelers of all ages, from infants to those older than 100.
  • If you need to exchange money, you may do so at the Travelex Currency Exchange and ATMs, which are situated in the Main Terminal, near the south end of the Ticketing Level, at the Baggage Claim, on Concourse A, and in the South Satellite at Seattle-Tacoma International Airport.
See more tips

Prefer to fly non-stop from Philadelphia to Seattle?

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

Nonstop departures

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

Nonstop returns

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, +1 more

Air Tahiti Nui, Alaska Airlines, +2 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
See more direct flights

Top 5 airlines serving from Philadelphia to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Philadelphia to Seattle. 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 Philadelphia to Seattle? 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 9110 reviews
7.9comfort
7.3entertainment
8.2boarding
8.6crew
7.3food
Airline reviews

It was much better than expected. Short flight and smaller plane so no entertainment or food.

10.0 ExcellentAnonymous, Apr 2024SLC - SEA
Read more about Alaska Airlines reviews

It was much better than expected. Short flight and smaller plane so no entertainment or food.

It took around two hours to depart. Just sitting in the tamarack waiting. It impacted my traveling plans in a very dramatic way. When we returned, it took around two hours for us to be able to get our luggage. Ridiculous!!

I thought every thing was good with the acceptation of the long layover between Seattle and the Tampa trip.

While the flight and the legroom was good boarding took a long time. The different groups Boarding made no sense as those in the back of the flight boarded last causing delays as people try to find room for their luggage in the upper bins. While there were plenty of seats on the flights We were spaced so that some rows were filled and others were empty. My first flight was very crowded and uncomfortable. On the way back both flights did not have Wi-Fi nor the entertainment package. We were only made aware of this a few hours before the flight. Since the flight was in the morning, I was asleep and was not able to download Books or other media to my phone. This is my first time flying Alaska airlines and I will admit to thinking twice before I do so again.

Our flight was delayed by six hours, our plane never left Portland the night before but the airline didn’t inform anyone till two hours before a six am flight. The plane, our plane never left the west coast! No plane no flight, simply let folks know when you know, not hours and hours later. No one apologized, no one said much of anything, we were just expected to wait quietly and await instructions.

The staff were great and the layover times were excellent no multiple hours. I just hate the Boxed Water. So you really have to purchase high price water in the airport.

Both flights were delayed. We sat on the tarmac on Boise for 3 hours with little updates

This flight was significantly affected by poor wifi connections. I couldn’t get my work done because the wifi kept dropping. Even texts were not going through. There is no seat power in premium class either. I fly a lot. Today was my 10th flight in 4 weeks. This was by far the only flight that was sub par.

4 out of 4 flights cancelled or delayed. 5th trip with similar experience

On time, comfortable seats with plenty of leg room, nice staff. Pretty good!

It was a Red-Eye flight so was not comfortable enough to sleep, but seat was as expected. Crew was great and in-flight entertainment was excellent. Flight was smooth

Standard economy seats on Deltas 767 were better than Alaska premium seats on their 737 MAX9; more legroom, wider seats. Entertainment was great, no ipad or phone required. Could have included a meal service.

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

The boarding process was terrible especially with an indirect flight Chicago to Seattle to San Diego was terrible talking about we overbooked a flight idk if I’d take this airline ever again we got off our flight from Chicago to Seattle and we traveled for business and they told us our connecting flight was over booked and their was no seats asking people to take a delayed next flight and they don’t tell anyone coughing to wear masks seats 30A-B were terrible during the flight no one wants to sit next to people coughing all around I don’t want to be sick traveling for work or get sick anytime it’s very upsetting the staff doesn’t take this stuff serious to tell them to wear masks when they see people coughing and sneezing

Flight was on time, the crew was personable & professional, & the plane arrived early which was nice.

This flight landed early, but deplaned late. We were stuck sitting and waiting for a gate for over an hour

My flight was very clean and the location was comfortable. The service was great. A satisfying flight!

I appreciated being upgraded. I was very disappointed with my 13 hr layover in Seattle to geg, while my friends who flew Alaska made it home as scheduled. I had to reserve a hotel on my dime.

Delta needs to step up the meals and snacks. They have been serving the same two meals for three years.... It is time to change it up.

Really liked the choice of the 4 free snack options. Crew great. Good vibe on plane.

Due to one crew member not showing up to work, our flight was significantly delayed causing us to miss our connecting flight in Houston to Mississippi causing us to be delayed by more than 6 hours and missing our event all together. Very disappointing. All because ONE crew member called in sick. United did grant us a $15 meal voucher, which was a small but appreciated concession that I wasn’t able to use because I ordered my lunch and paid for it before applying the concession, and the staff said it was too late to use it. Ugh! We also had a TWO delay coming back from Mississippi, but that was on American Airlines and it was due to weather, so not their fault. Anyway, not at all impressed with United’s handling of our flight and the HUGE disappointment of missing our important family event for our 90 year old mother. All that money and all that stress and emotions for nothing. Having to wait the hour to bring an employee from LAX seemed like something that should not have happened. Why don’t you have a local back-up? Santa Ana is not a little airport in a rural area.

Flight delayed from Cape Town to Washington then got diverted to miami and in miami we had to fend for ourselves , im still trying to get to Shreveport now

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

I just wrote a text which was supposed to be for the flight from Denver to spokane not Frankfurt to Denver.

On time every leg of the journey and exceptional staff at counter, gate, and on board. I haven’t travelled in US for a long time and was genuinely surprised how pleasant this was.

The delays (5 hrs) were a comedy of errors, and the multiple safety issues encountered were very concerning.

flight delays, staff only communicating when pushed, food service lasting a grand total of 7 minutes, stuck in seat from 45mins into flight until landing

Crew was great and did their best to make us comfortable and captain came out at the beginning to announce why the flight was delayed, weather situation up ahead, and kept us updated throughout the flight.

they made me check my carryon. There was space in the overhead bins.

Nice flight, nice crew but no cookie or napkin with my seltzer.

i suspect i caught flu on this flight as i could hear someone coughing a few rows back and ended up with flu a few days later. also tiresome to have to watch movies on my device by holding up smartphone screen, would have liked to have in seat display.

Same basket of unhealthy prepackaged snacks (junk food) which was depleted by the time it got to my row!!

I had trouble finding a boarding pass because I had an hour between Flights and American did not see my flight I believe because I was ticketed through KAYAK. I did not have enough time to go to the desk before boarding so I went to the desk and told them while I was boarding and they had a boarding pass for me within three minutes. Nice. I paid extra to have more legroom and it is definitely worth it for a six hour flight. I would’ve paid for a decent dinner, but they didn’t offer anything but a snack box —not good for six hours.

We experience delays on departure and connecting flights resulting in 14 hour to our next departure. We were accommodated with a night's stay but was only provided a 12 dollar meals accommodation. The airlines rules state.at least 50 dollars. In any case, it can not make up for the whole day missed on our vacation in Sydney Australia.

Flight from PHL to PHX arrived 50 minutes early and a gate was available. First class flight attendant Stephanie was very friendly and polite. Sanitizing wipes should be provided with meals in addition to refresher towels.

flight delayed so missed connection and this had to rebook for next day

Flight departed PHL one hour late due to late arrival of aircraft. On board services were okay. First class menu does not offer any new items; same desserts (cheese & crackers or Mango sorbet). At least there were no credit card promotions during the flight.

After sitting on plane for 7+ hours, flight was canceled. And to makes matters worse, my suitcase is in baggage hell!

Terrible Ticketing and Check in process. I learned that AA unilaterally cancelled my premium seating from PHL to CLT and from CLT to JAN. They did, however, refund my money, but my seating was subsequently severely downgraded. They didn’t have a seat for my unless I paid for it! Not cool! Consequently, Check-in took 45 min. AA is usually great, but this was my worst experience with AA ever. Appalling they they arbitrarily cancel my seats threatening loss of flight if I didn’t pay for a seat!!!! -John

We liked quick boarding and on time departure. Seats were very uncomfortable.

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.

Flight cancelled and was told by a rude gate agent that they don’t accommodate on other airlines. Had to wait 5 hours for a connecting flight that had a 7 hour layover. Would not allow bags to be checked early so we couldn’t go through security .Had to rent a car for the afternoon to store bags and get a meal. Also incurred a hotel fee. No apology or reason given for the cancellation- just rudeness.

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

The process of buying the ticket and navigating all the hidden charges that Frontier throws at you was a terrible experience. The actual airport experience and flying was fine.

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

Not have to pay for every single item to take a flight. Seating and delays sucked.

Flight was cancelled and I had to spend the night in the airport lugging my suitcase around

If you don’t check in 24 hours in advance, they will charge you $110 to check your bag instead of the $30. I did not get an email with this information and did not check in. In addition, my flight home was cancelled at layover and I had to spend the night in the airport, and then have another layover at another airport before making it home. Will not fly frontier again.

Book cheap flights from Philadelphia to Seattle

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Philadelphia to Seattle found on KAYAK in the last 72 hours.
5/16Thu
1 stopFrontier
15h 28mPHL-SEA
$81
6/4Tue
1 stopFrontier
9h 10mPHL-SEA
$100
8/7Wed
1 stopAmerican Airlines
9h 29mPHL-SEA
$148
5/14Tue
nonstopAlaska Airlines
5h 51mPHL-SEA
$149
6/8Sat
nonstopAlaska Airlines
5h 53mPHL-SEA
$169
7/11Thu
1 stopDelta
8h 33mPHL-SEA
$178
7/2Tue
1 stopAmerican Airlines
8h 20mPHL-SEA
$198
6/29Sat
1 stopDelta
8h 59mPHL-SEA
$203
8/23Fri
2 stopsUnited Airlines
15h 23mPHL-SEA
$233
5/6Mon
2 stopsUnited Airlines
20h 33mPHL-SEA
$259

Search by stops

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Last minute flights from Philadelphia to Seattle

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 Philadelphia to Seattle that are departing in the next 10 days.
4/29Mon
multi-stopFrontier
26h 45mPHL-SEA
5/2Thu
multi-stopFrontier
28h 41mSEA-PHL
$288
4/29Mon
multi-stop
26h 45mPHL-SEA
5/2Thu
multi-stop
21h 14mSEA-PHL
$356
4/26Fri
multi-stopFrontier
26h 42mPHL-SEA
4/28Sun
multi-stopFrontier
28h 15mSEA-PHL
$372
4/27Sat
multi-stopUnited Airlines
14h 03mPHL-SEA
5/7Tue
multi-stopUnited Airlines
14h 50mSEA-PHL
$610
4/27Sat
multi-stopUnited Airlines
11h 43mPHL-SEA
5/7Tue
multi-stopUnited Airlines
14h 50mSEA-PHL
$668
4/27Sat
nonstopAmerican Airlines
6h 11mPHL-SEA
5/7Tue
multi-stopAmerican Airlines
11h 45mSEA-PHL
$686
4/27Sat
nonstopAmerican Airlines
6h 11mPHL-SEA
5/7Tue
nonstopAmerican Airlines
5h 12mSEA-PHL
$697
4/27Sat
multi-stopDelta
7h 27mPHL-SEA
5/6Mon
multi-stopDelta
6h 55mSEA-PHL
$735
4/28Sun
multi-stopDelta
8h 17mPHL-SEA
4/30Tue
multi-stopDelta
7h 04mSEA-PHL
$766
4/25Thu
nonstopAlaska Airlines
5h 58mPHL-SEA
4/28Sun
nonstopAlaska Airlines
5h 12mSEA-PHL
$847

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Philadelphia - Seattle Flights

Departure:

Philadelphia (PHL)United States

Destination:

Seattle (SEA)United States

Return flight deals:

Seattle - Philadelphia

Cabin classes:

$970
$883
$1,196
$292