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PHL - SEA

$65 Find cheap flights from Philadelphia to Seattle

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 6/25. 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
Mon 7/1
Mon 7/8

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 42,787,818 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
8:06 pm - 8:32 amPHL-SEA
15h 26m2 stops
8:59 pm - 7:12 pmSEA-PHL
19h 13m2 stops
$161Spirit Airlines
Find Deal
Tue, Jun 25 - Mon, Jul 1
8:06 pm - 8:32 amPHL-SEA
15h 26m2 stops
8:59 pm - 7:12 pmSEA-PHL
19h 13m2 stops
$162Spirit Airlines
Find Deal
Tue, Jun 25 - Mon, Jul 1
1:03 pm - 8:37 amPHL-SEA
22h 34m1 stop
10:08 pm - 5:37 amSEA-PHL
28h 29m1 stop
$186Frontier
Find Deal
Sat, Aug 24 - Sat, Aug 31
8:24 am - 7:01 pmPHL-SEA
13h 37m1 stop
11:30 am - 5:34 amSEA-PHL
15h 04m1 stop
$192Frontier
Find Deal
Sat, Sep 14 - Wed, Sep 18
6:59 pm - 9:56 pmPHL-SEA
5h 57mnonstop
9:39 pm - 5:40 amSEA-PHL
5h 01mnonstop
$287Alaska Airlines
Find Deal
Fri, Sep 6 - Wed, Sep 11
8:30 am - 11:27 amPHL-SEA
5h 57mnonstop
8:00 am - 4:12 pmSEA-PHL
5h 12mnonstop
$302American Airlines
Find Deal
Wed, Aug 28 - Sat, Sep 7
4:58 pm - 10:25 pmPHL-SEA
8h 27m1 stop
6:00 am - 5:23 pmSEA-PHL
8h 23m1 stop
$306Delta
Find Deal
Sun, Sep 1 - Sat, Sep 21
6:53 pm - 10:00 pmPHL-SEA
6h 07mnonstop
9:44 pm - 5:41 amSEA-PHL
4h 57mnonstop
$307Alaska Airlines
Find Deal
Fri, Oct 11 - Tue, Oct 15
8:15 am - 4:51 pmPHL-SEA
11h 36m1 stop
7:15 pm - 5:37 amSEA-PHL
7h 22m1 stop
$321Delta
Find Deal
Tue, Oct 8 - Sat, Oct 12
6:30 pm - 9:43 pmPHL-SEA
6h 13mnonstop
1:43 am - 12:43 pmSEA-PHL
8h 00m1 stop
$322American Airlines
Find Deal
Tue, Nov 5 - Tue, Nov 12

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 Wednesday 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 $302 on average. On the other hand, the most expensive months are July and June, where the average cost of tickets is $546 and $529 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 Spirit Airlines ($161) and Frontier ($186). Spirit Airlines proposed the cheapest one-way flight at $65.

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 4 and 5 nonstop flights that take off from Philadelphia and land in Seattle, with an average flight time of 6h 01m. The most common departure time is 7:00 am and most flights take off in the morning. Each week, there are 34 flights. The most frequent day of departure is Friday, when 15% of all weekly flights depart. The fewest flights depart on a Tuesday.

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 7:07 am and will be landing in Seattle at 10:07 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 7:16 pm and lands at 10:29 pm.

Good to know

Low season

January

High season

August

Cheapest flight

$65
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly with an average 16% 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 $65 for a one-way ticket and $161 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, Delta, and JetBlue 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 MAX 9 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 $417 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 $356 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

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

  • Looking for a cheap flight? 25% of our users found flights on this route for $258 or less one-way and $431 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, +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
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 9197 reviews
7.3Food
8.2Boarding
7.9Comfort
7.3Entertainment
8.6Crew
Airline reviews

The flight itself went well, except it left 1.5 hours late, and about 10 of us missed our Alaska Airlines connection by minutes; they wouldn't hold the plane, even though our arrival delay was caused by Alaska. No gluten-free options among the snacks; you had to order meals separately, but there was no consideration for food sensitivities. NO TELEVISION on a flight from Washington, DC to Seattle or from Seattle to Anchorage. I didn't know that ANY airlines offering cross-country flights didn't have screens for entertainment. This alone is a "never again" for me.

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

The flight itself went well, except it left 1.5 hours late, and about 10 of us missed our Alaska Airlines connection by minutes; they wouldn't hold the plane, even though our arrival delay was caused by Alaska. No gluten-free options among the snacks; you had to order meals separately, but there was no consideration for food sensitivities. NO TELEVISION on a flight from Washington, DC to Seattle or from Seattle to Anchorage. I didn't know that ANY airlines offering cross-country flights didn't have screens for entertainment. This alone is a "never again" for me.

I have to eat gluten-free due to celiac disease, but so far no Alaska Air flight has offered a gluten-free option for the snack given out with free drinks. It seems like that wouldn't be too hard to do.

I didn’t know that food needed to be ordered ahead. Please include this in the reservation information. Overall, very good experience.

Full flight where I had another passenger sitting in middle seat who said that he had lost 250 lbs from 500. The stewardess on exiting the flight advise me that I was going to receive a refund. I thought she was talking about another passenger. The stewardess saw that to make him comfortable I had lifted the armrest and flew for 5 hours to Seattle from Reagan DCA with a portion of his body on my seat. I survived. I flight to remember!!!!

the flight was delayed almost 3 hours and not one time was we told that it was delayed or why. I had asked one of the crew members why it was delayed, 20 minutes after the flight was supposed to take off, and was told that they had no idea what was going on and that they had not been told anything. this is FRIGHTENING!!!! No excuse!!

Flights were on time. Check in was fine. Crew members were pleasant.

I would have liked it to have been easier to order food for the flight. My son was not happy with the snack pack I bought him and it was a very long flight for a little boy to go without food.

Ground staff at LAX was very helpful. The Alaska lounge food and service is better than most airport lounges. I think the Staff are well trained polite and actually seem happy to work there. Great service Thanks 🙏 Jjk

The flight was very very delayed and arrived much later than planned. There was no communication about why or when our arrival would be. I would expect better and open communication about the flight but there was none. Also just pretzels? How disappointing.

I got to my destination but no comforts no snacks nothing. Like herding cows!!

Delta crushed it. Flight attendant in first was attentive and just never stopped. Honestly one of the best domestic flights I’ve been on.

Delta is one of the best airlines I have flown

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.

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!

The Wi-Fi was unavailable on this flight for some reason.

On time take off…US cabins look tired and need of refresh!

Fantastic. Smooth boarding with an infant. Never experienced it with any other carriers.

This was a Lufthansa flight, not United. The CSA at the counter, Ashley, was not only incompetent, but quite rude. Me and two other PAX waited over 7 minutes standing in front of her and another CSA and they ignored us. We joked that we must have accidently taken invisibility pills. She could have at least said "I'll be with you in a moment, I'm currently....". I could go on about how rude she and the other CSAs were (whispering, not communicating with me, blaming the situation on others, etc.). She would not work for me. Then, she gave me literally the worst seat on the plane. the worst. My seat kept getting bumped (rammed twice by the crew with their carts and about every 5 minutes by someone using the bathroom), listening to the bathroom all night, crowded seat, etc.

My seat was broken. WiFi didn’t work. Gate crew at HOU were rude and condescending. Treated all the passengers badly. Bad experience, United.

First flight of the day… MINIMUM FUEL! 15 minute landing delay at HOU due to fog turned into a 2+ hour delay! Rather than circle, they had to divert to another city to refuel! Sat on tarmac at Austin to refuel. We ALL missed our connections! The crew, including pilots, were clueless. Crew was really a mess. At HOU, Untied employees were exceedingly rude to all. It was pitiful.

An hour and a half late is UNACCEPTABLE. The negative impact to our family is unconscionable. And for the price we were forced to pay...

There were delays on both ends. It made it less than excellent. This plane was great though

Attendants were rude. Scowling. Seats were miserable and we paid extra.

Not being able to purchase my check in baggage online was a negative.

LATE LATE LATE!!! Plagued by late AA flights on this trip. Such a drag. This one was by far the worst.

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 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.

Frontier won’t help you at the airport without paying $25. Carry on was $75. Then you get on the plain and every beverage or snack is also a charge. Seats are hard and real packed in. I would never fly them again.

Worst experience I have seen. The flight was cancelled without any reason.

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.
6/25Tue
2 stopsSpirit Airlines
15h 26mPHL-SEA
$65
8/28Wed
1 stopSpirit Airlines
16h 10mPHL-SEA
$88
6/8Sat
1 stopFrontier
15h 40mPHL-SEA
$100
6/8Sat
1 stopFrontier
15h 40mPHL-SEA
$101
7/16Tue
nonstopAlaska Airlines
6h 00mPHL-SEA
$144
10/21Mon
1 stopAmerican Airlines
9h 29mPHL-SEA
$178
6/25Tue
nonstopAmerican Airlines
6h 13mPHL-SEA
$180
6/24Mon
nonstopAlaska Airlines
6h 00mPHL-SEA
$199
8/23Fri
2 stopsUnited Airlines
10h 51mPHL-SEA
$228
8/23Fri
3 stopsUnited Airlines
15h 28mPHL-SEA
$243

Search by stops

Search by airline

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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.
6/1Sat
multi-stopFrontier
13h 37mPHL-SEA
6/4Tue
multi-stopFrontier
12h 54mSEA-PHL
$244
6/1Sat
multi-stopFrontier
13h 37mPHL-SEA
6/4Tue
multi-stopFrontier
12h 54mSEA-PHL
$248
6/3Mon
nonstopAlaska Airlines
5h 53mPHL-SEA
8/5Mon
nonstopAlaska Airlines
5h 02mSEA-PHL
$567
6/3Mon
nonstopAmerican Airlines
6h 05mPHL-SEA
8/5Mon
multi-stopAmerican Airlines
7h 34mSEA-PHL
$688
6/3Mon
multi-stopUnited Airlines
10h 20mPHL-SEA
8/4Sun
multi-stopUnited Airlines
20h 59mSEA-PHL
$698
6/3Mon
multi-stopUnited Airlines
13h 08mPHL-SEA
8/4Sun
multi-stopUnited Airlines
20h 59mSEA-PHL
$708
6/5Wed
nonstopAlaska Airlines
5h 53mPHL-SEA
6/11Tue
nonstopAlaska Airlines
5h 11mSEA-PHL
$756
6/5Wed
multi-stopDelta
8h 30mPHL-SEA
6/8Sat
multi-stopDelta
6h 56mSEA-PHL
$775
6/3Mon
multi-stopDelta
10h 20mPHL-SEA
6/11Tue
multi-stopDelta
6h 56mSEA-PHL
$776
6/1Sat
nonstopAmerican Airlines
6h 05mPHL-SEA
6/4Tue
multi-stopAmerican Airlines
8h 28mSEA-PHL
$813

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Philadelphia - Seattle Flights

Departure:

Philadelphia (PHL)United States

Destination:

Seattle (SEA)United States

Return flight deals:

Seattle - Philadelphia

Cabin classes:

$1,349
$869
$1,171
$323