Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Seattle to Philadelphia from $90

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Philadelphia departing on 12/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Deals available from 900+ travel sites.

"This year, momondo is the #1 place for airfares on the internet."
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.
Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.
Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.
Price Alerts
Price Alerts
Not ready to book? to track prices.

Find the cheapest flights from Seattle to Philadelphia

Cheap round-trip flights

These are some of the best round-trip flight deals from Seattle to Philadelphia that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Seattle to Philadelphia.

Cheap last minute flights

Planning a quick getaway from Seattle to Philadelphia? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Philadelphia, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Seattle to Philadelphia

Find recent round-trip train or bus tickets from Seattle to Philadelphia.

All round-trip flight deals to Philadelphia

The cheapest plane tickets to Philadelphia found on KAYAK recently.
5:40 pm - 10:47 amSEA-PHL
14h 07m1 stop
9:53 pm - 2:19 pmPHL-SEA
19h 26m1 stop
$158Frontier
Find Deal
Wed, Jan 1 - Thu, Jan 9
5:15 am - 1:40 pmSEA-PHL
29h 25m1 stop
5:40 am - 1:10 pmPHL-SEA
10h 30m1 stop
Fri, Dec 13 - Tue, Dec 17
11:05 pm - 8:48 amSEA-PHL
6h 43m1 stop
6:00 am - 10:45 amPHL-SEA
7h 45m1 stop
$296Delta
Find Deal
Wed, Jan 8 - Sat, Jan 11
9:15 am - 5:32 pmSEA-PHL
5h 17mnonstop
6:32 pm - 9:55 pmPHL-SEA
6h 23mnonstop
$307Alaska Airlines
Find Deal
Fri, Jan 31 - Tue, Feb 4
6:00 am - 3:55 pmSEA-PHL
6h 55m1 stop
4:50 pm - 10:25 pmPHL-SEA
8h 35m1 stop
$326Delta
Find Deal
Thu, Jan 9 - Wed, Jan 15
7:10 pm - 5:30 amSEA-PHL
7h 20m1 stop
11:50 am - 6:45 pmPHL-SEA
9h 55m1 stop
$332United Airlines
Find Deal
Tue, Mar 18 - Wed, Mar 26
9:45 pm - 5:40 amSEA-PHL
4h 55mnonstop
6:32 pm - 9:55 pmPHL-SEA
6h 23mnonstop
$337Alaska Airlines
Find Deal
Sat, Jan 4 - Wed, Jan 15
12:15 am - 12:51 pmSEA-PHL
9h 36m1 stop
7:00 pm - 10:21 pmPHL-SEA
6h 21mnonstop
$347American Airlines
Find Deal
Mon, Dec 9 - Thu, Dec 12
9:00 am - 5:08 pmSEA-PHL
5h 08mnonstop
7:00 pm - 10:21 pmPHL-SEA
6h 21mnonstop
$357American Airlines
Find Deal
Wed, Dec 11 - Tue, Dec 17
5:15 pm - 10:50 amSEA-PHL
14h 35m2 stops
3:40 pm - 9:11 pmPHL-SEA
8h 31m1 stop
$401United Airlines
Find Deal
Tue, Jan 7 - Wed, Jan 22
5:31 pm - 10:47 amSEA-PHL
14h 16m1 stop
$90Frontier
Find Deal
Mon, Dec 16
11:49 am - 6:21 amSEA-PHL
15h 32m1 stop
$92Frontier
Find Deal
Tue, Dec 17
9:00 am - 5:08 pmSEA-PHL
5h 08mnonstop
$139American Airlines
Find Deal
Wed, Dec 11
9:35 pm - 5:30 amSEA-PHL
4h 55mnonstop
$144Alaska Airlines
Find Deal
Tue, Nov 26
12:50 am - 10:48 amSEA-PHL
6h 58m1 stop
$148Delta
Find Deal
Mon, Dec 9
9:40 pm - 5:45 amSEA-PHL
5h 05mnonstop
$169Alaska Airlines
Find Deal
Fri, Dec 13
6:00 am - 3:55 pmSEA-PHL
6h 55m1 stop
$178Delta
Find Deal
Sun, Jan 12
12:31 am - 1:01 pmSEA-PHL
9h 30m1 stop
$193American Airlines
Find Deal
Tue, Dec 24
5:15 pm - 10:50 amSEA-PHL
14h 35m2 stops
$203United Airlines
Find Deal
Tue, Jan 21
7:13 pm - 9:52 amSEA-PHL
11h 39m2 stops
$233United Airlines
Find Deal
Fri, Feb 21
8:41 am - 5:31 amSEA-PHL
17h 50m1 stop
8:35 pm - 8:19 amPHL-SEA
14h 44m1 stop
$358Frontier
Find Deal
Sat, Nov 23 - Mon, Nov 25
12:03 pm - 5:31 amSEA-PHL
14h 28m1 stop
7:25 am - 4:23 pmPHL-SEA
11h 58m1 stop
Mon, Nov 25 - Tue, Dec 3
12:25 am - 12:51 pmSEA-PHL
9h 26m1 stop
7:00 pm - 10:21 pmPHL-SEA
6h 21mnonstop
$495American Airlines
Find Deal
Mon, Nov 25 - Sat, Dec 7
12:25 am - 12:51 pmSEA-PHL
9h 26m1 stop
5:15 pm - 11:09 pmPHL-SEA
8h 54m1 stop
$504American Airlines
Find Deal
Mon, Nov 25 - Sat, Dec 7
12:55 am - 10:55 amSEA-PHL
7h 00m1 stop
6:45 pm - 12:23 amPHL-SEA
8h 38m1 stop
$537Delta
Find Deal
Mon, Nov 25 - Fri, Dec 6
9:35 pm - 5:30 amSEA-PHL
4h 55mnonstop
8:22 am - 8:55 pmPHL-SEA
15h 33m1 stop
$636Alaska Airlines
Find Deal
Mon, Nov 25 - Tue, Nov 26
12:55 am - 10:36 amSEA-PHL
6h 41m1 stop
7:05 am - 12:30 pmPHL-SEA
8h 25m1 stop
$706Delta
Find Deal
Thu, Nov 21 - Tue, Nov 26
9:35 pm - 5:30 amSEA-PHL
4h 55mnonstop
9:14 am - 9:18 pmPHL-SEA
15h 04m1 stop
$766Alaska Airlines
Find Deal
Sun, Nov 24 - Mon, Nov 25
7:00 am - 5:29 pmSEA-PHL
7h 29m1 stop
6:20 am - 4:43 pmPHL-SEA
13h 23m2 stops
$1,515United Airlines
Find Deal
Sat, Nov 23 - Thu, Nov 28
6:20 pm - 6:57 amSEA-PHL
9h 37m1 stop
10:10 am - 4:43 pmPHL-SEA
9h 33m1 stop
$1,545United Airlines
Find Deal
Sun, Nov 24 - Mon, Nov 25
9:15 am - 5:32 pmSEA-PHL
5h 17mnonstop
6:32 pm - 9:55 pmPHL-SEA
6h 23mnonstop
$307Alaska Airlines
Find Deal
Fri, Jan 31 - Tue, Feb 4
9:15 am - 5:32 pmSEA-PHL
5h 17mnonstop
6:25 pm - 9:51 pmPHL-SEA
6h 26mnonstop
$317Alaska Airlines
Find Deal
Wed, Feb 12 - Mon, Feb 17
9:00 am - 5:08 pmSEA-PHL
5h 08mnonstop
7:00 pm - 10:21 pmPHL-SEA
6h 21mnonstop
$322American Airlines
Find Deal
Wed, Dec 11 - Mon, Dec 16
9:45 pm - 5:40 amSEA-PHL
4h 55mnonstop
6:32 pm - 9:55 pmPHL-SEA
6h 23mnonstop
$327Alaska Airlines
Find Deal
Sat, Jan 4 - Tue, Jan 14
9:45 pm - 5:40 amSEA-PHL
4h 55mnonstop
6:32 pm - 9:55 pmPHL-SEA
6h 23mnonstop
$337Alaska Airlines
Find Deal
Sat, Jan 4 - Wed, Jan 15
9:45 pm - 5:40 amSEA-PHL
4h 55mnonstop
6:32 pm - 9:55 pmPHL-SEA
6h 23mnonstop
$347Alaska Airlines
Find Deal
Sat, Jan 4 - Wed, Jan 15
11:42 pm - 7:40 amSEA-PHL
4h 58mnonstop
6:30 pm - 9:46 pmPHL-SEA
6h 16mnonstop
$352American Airlines
Find Deal
Tue, Mar 18 - Wed, Mar 26
9:00 am - 5:08 pmSEA-PHL
5h 08mnonstop
7:00 pm - 10:21 pmPHL-SEA
6h 21mnonstop
$357American Airlines
Find Deal
Wed, Dec 11 - Tue, Dec 17
9:45 pm - 5:40 amSEA-PHL
4h 55mnonstop
6:32 pm - 9:55 pmPHL-SEA
6h 23mnonstop
$366Alaska Airlines
Find Deal
Fri, Jan 3 - Fri, Jan 10
9:45 pm - 6:01 amSEA-PHL
5h 16mnonstop
6:35 pm - 9:47 pmPHL-SEA
6h 12mnonstop
$367Alaska Airlines
Find Deal
Fri, Mar 21 - Mon, Mar 24

Spirit Airlines flights from Seattle to Philadelphia

Our best Spirit Airlines deals on Seattle to Philadelphia flight tickets
Spirit Airlines
Jan 7
SEA6:11 amSeattle/Tacoma Intl
28h 29m
1 stop
PHL1:40 pmPhiladelphia
Jan 14
PHL6:23 amPhiladelphia
20h 51m
1 stop
SEA12:14 amSeattle/Tacoma Intl
Spirit Airlines
Jan 7
SEA6:11 amSeattle/Tacoma Intl
28h 29m
1 stop
PHL1:40 pmPhiladelphia
Jan 13
PHL8:33 amPhiladelphia
11h 27m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
Spirit Airlines
May 16
SEA6:00 amSeattle/Tacoma Intl
29h 16m
1 stop
PHL2:16 pmPhiladelphia
May 19
PHL10:50 pmPhiladelphia
27h 20m
1 stop
SEA11:10 pmSeattle/Tacoma Intl

American Airlines flights from Seattle to Philadelphia

Our best American Airlines deals on Seattle to Philadelphia flight tickets
American Airlines
Dec 9
SEA12:15 amSeattle/Tacoma Intl
9h 36m
1 stop
PHL12:51 pmPhiladelphia
Dec 12
PHL7:00 pmPhiladelphia
6h 21m
SEA10:21 pmSeattle/Tacoma Intl
American Airlines
Dec 11
SEA9:00 amSeattle/Tacoma Intl
5h 08m
PHL5:08 pmPhiladelphia
Dec 17
PHL7:00 pmPhiladelphia
6h 21m
SEA10:21 pmSeattle/Tacoma Intl
American Airlines
Dec 10
SEA12:15 amSeattle/Tacoma Intl
9h 36m
1 stop
PHL12:51 pmPhiladelphia
Dec 16
PHL7:00 pmPhiladelphia
6h 21m
SEA10:21 pmSeattle/Tacoma Intl

See travel insights to Philadelphia from

How to get the cheapest flight ticket from Seattle to Philadelphia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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

February. The cheapest time of year to fly to Philadelphia from Seattle is February. Most expensive is June

What is the cheapest day to depart Seattle for Philadelphia?

Wednesday. The cheapest day of the week is typically Wednesday. The most expensive is typically Sunday

When is the cheapest time to fly from Seattle to Philadelphia?

In the afternoon. Seattle to Philadelphia flights are approximately 45% more expensive in the morning than in the afternoon

What is the cheapest Seattle to Philadelphia flight route?

Seattle/Tacoma Intl - Philadelphia. Fly from Seattle/Tacoma Intl to Philadelphia for the best Seattle - Philadelphia flight prices

How far in advance should you book Seattle to Philadelphia flights?

38 days before. The cheapest time to buy a flight from Seattle to Philadelphia is approximately 38 days to departure

What cabin class options are available on Seattle to Philadelphia flights?

There are 3 cabin classes available to choose from on Seattle to Philadelphia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to Philadelphia flights?

You could potentially save up to 35% on your flight if you consider stops on a Seattle to Philadelphia flight.

How have Seattle to Philadelphia flight prices changed over time?

As of November 2024, prices for Seattle to Philadelphia flights are approximately 7% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to Philadelphia

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Philadelphia according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Philadelphia (SEA to PHL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Philadelphia

Best Price Found

$90

Fastest flight time

4h 55m

Direct flights

Every day

Airports in Philadelphia

1 airport
The best one-way flight to Philadelphia from Seattle in the past 72 hours is $90. The best round-trip flight deal from Seattle to Philadelphia found on momondo in the last 72 hours is $158.
The fastest flight from Seattle to Philadelphia takes 4h 55m
Direct flights go from Seattle to Philadelphia every day.
There is 1 airport near Philadelphia: Philadelphia (PHL)

  • How far is Seattle/Tacoma Intl to Philadelphia by plane?

    The distance between Seattle/Tacoma Intl and Philadelphia is about 2372.3 mi. Typically, this will take 4h 55m by plane in normal conditions.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Philadelphia Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Philadelphia Airport were last updated today.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Philadelphia Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Philadelphia Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Philadelphia Airport.

  • What documentation or ID do you need to fly to Philadelphia Airport?

    The travel and health documents you'll need for your trip to Philadelphia Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Philadelphia Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Seattle to Philadelphia?

  • What is the most popular airline from Seattle to Philadelphia?


Best airlines flying from Seattle to Philadelphia

Compare and see reviews for airlines that fly from Seattle to Philadelphia with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $85Free CancellationRating
6.3
8,174 reviews
Search Spirit Airlines flights
FrontierPriceFrom $128Free CancellationRating
6.1
3,539 reviews
Search Frontier flights
Sun Country AirPriceFrom $220Free CancellationRating
7.0
415 reviews
Search Sun Country Air flights
United AirlinesPriceFrom $222Free CancellationRating
7.4
9,171 reviews
Search United Airlines flights
DeltaPriceFrom $234Free CancellationRating
8.0
8,756 reviews
Search Delta flights
Alaska AirlinesPriceFrom $270Free CancellationRating
8.0
9,461 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $291Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
  • Alaska Airlines Flights From Seattle to Philadelphia

    Alaska Airlines flies from Seattle to Philadelphia around 7 times per week, with 9,461 momondo users rating the airline 8.0/10. The cheapest Alaska Airlines deal from Seattle to Philadelphia in the last 72 hours was $270 (round-trip), much lower than the average airfare cost of $477 for Alaska Airlines flights on this route.

  • American Airlines Flights From Seattle to Philadelphia

    American Airlines is also a popular choice for this route. American Airlines flight deals for Seattle to Philadelphia start from as low as $291 round-trip, depending on your selected dates, with average American Airlines deals seen on momondo around $466. American Airlines operates 4 flights to Philadelphia from Seattle in an average week. Users have rated it 7.2/10 across 10,000 reviews.


Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Philadelphia?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seattle to Philadelphia. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Seattle to Philadelphia with flexible booking policies on momondo?

momondo does allow users to show only those flights to Philadelphia from Seattle which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Seattle to Philadelphia?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to Philadelphia.

I’m not ready to book a flight from Seattle to Philadelphia right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Philadelphia, momondo offers a useful price alert feature which will track prices for flights to Philadelphia from Seattle and alert you when they change.


An easier way to manage your Philadelphia trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
From?
To?
Mon 11/25
Mon 12/2
Email me momondo's favorite deals

Find better results for your trip to the United States