$76 Cheap flights from Philadelphia Intl. to Seattle - Tacoma Intl. (PHL to SEA)

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Find The Best Dates To Fly from Philadelphia Intl. to Seattle - Tacoma Intl.

Amazing PHL to SEA Flight Deals

The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were $160 round trip and $76 one way. Prices and availability subject to change. Additional terms may apply.

Thu, May 16 - Thu, May 23
PHL
Philadelphia
SEA
Seattle
$160 Roundtrip, found 1 day ago
$160
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Thu, May 16 from Philadelphia to Seattle, returning Thu, May 23, priced at $160 found 1 day ago
Sat, May 18 - Tue, Jun 4
PHL
Philadelphia
SEA
Seattle
$185 Roundtrip, found 12 hours ago
$185
Roundtrip
found 12 hours ago
Select Frontier Airlines flight, departing Sat, May 18 from Philadelphia to Seattle, returning Tue, Jun 4, priced at $185 found 12 hours ago
Sat, Jun 1 - Tue, Jun 4
PHL
Philadelphia
SEA
Seattle
$189 Roundtrip, found 2 hours ago
$189
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Sat, Jun 1 from Philadelphia to Seattle, returning Tue, Jun 4, priced at $189 found 2 hours ago
Sun, May 12 - Tue, May 21
PHL
Philadelphia
SEA
Seattle
$194 Roundtrip, found 21 hours ago
$194
Roundtrip
found 21 hours ago
Select Frontier Airlines flight, departing Sun, May 12 from Philadelphia to Seattle, returning Tue, May 21, priced at $194 found 21 hours ago
Sun, May 12 - Tue, May 28
PHL
Philadelphia
SEA
Seattle
$195 Roundtrip, found 2 days ago
$195
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Sun, May 12 from Philadelphia to Seattle, returning Tue, May 28, priced at $195 found 2 days ago
Sat, May 18 - Mon, Jun 3
PHL
Philadelphia
SEA
Seattle
$198 Roundtrip, found 12 hours ago
$198
Roundtrip
found 12 hours ago
Select Frontier Airlines flight, departing Sat, May 18 from Philadelphia to Seattle, returning Mon, Jun 3, priced at $198 found 12 hours ago
Sat, May 11 - Sat, May 18
PHL
Philadelphia
SEA
Seattle
$199 Roundtrip, found 2 hours ago
$199
Roundtrip
found 2 hours ago
Select Spirit Airlines flight, departing Sat, May 11 from Philadelphia to Seattle, returning Sat, May 18, priced at $199 found 2 hours ago
Sat, May 11 - Sat, May 18
PHL
Philadelphia
SEA
Seattle
$200 Roundtrip, found 2 hours ago
$200
Roundtrip
found 2 hours ago
Select Spirit Airlines flight, departing Sat, May 11 from Philadelphia to Seattle, returning Sat, May 18, priced at $200 found 2 hours ago
Fri, May 17 - Tue, May 21
PHL
Philadelphia
SEA
Seattle
$202 Roundtrip, just found
$202
Roundtrip
just found
Select Frontier Airlines flight, departing Fri, May 17 from Philadelphia to Seattle, returning Tue, May 21, priced at $202 just found
Sat, May 18 - Fri, May 31
PHL
Philadelphia
SEA
Seattle
$203 Roundtrip, found 3 days ago
$203
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Sat, May 18 from Philadelphia to Seattle, returning Fri, May 31, priced at $203 found 3 days ago

Flight Schedule for PHL to SEA

CarrierFlightDepart PHLArrive SEAFri
4/26		Sat
4/27		Sun
4/28		Mon
4/29		Tue
4/30		Wed
5/1		Thu
5/2		Stops
AS37007:00 am09:51 amCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops
AA236106:47 pm09:58 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops
AS44306:57 pm09:55 pmCheck FareCheck FareCheck FareCheck FareCheck FareCheck FareCheck Fare
0 Stops

Frequently asked questions

Are there direct flights from Philadelphia Intl. Airport (PHL) to SEA?
If you want to travel from Philadelphia Airport to Sea-Tac Airport as fast as you can, you’ll be glad to know multiple airlines offer direct flights. Choose your favorite seat with American Airlines or Alaska Airlines.
How long is the flight from Philadelphia Intl. Airport (PHL) to Seattle - Tacoma Intl. Airport (SEA)?
Feel free to hop up and walk the aisles during your flight from Philadelphia Intl. Airport (PHL) to Seattle - Tacoma Intl. Airport (SEA). You’ll be in the air for 9 hours and 9 minutes, so exercising your body will help keep you comfortable during this lengthy journey.
What is the flight distance from Philadelphia Intl. Airport (PHL) to Seattle - Tacoma Intl. Airport (SEA)?
The flight distance from Philadelphia Intl. Airport (PHL) to Sea-Tac Airport is 2,400 mi. We suggest you pack a magazine or a crossword puzzle to make your trip more enjoyable.
What airlines fly from PHL to SEA?
You can take your pick from several airlines that fly direct between Philadelphia and Seattle. American Airlines (AA) is one of the most reliable. This carrier offers at least 52 flights each month. You may want to also browse the deals available through Alaska Airlines (AS). Another leading carrier, it operates 30 flights each month on the Philadelphia to Seattle route. Compare the two airlines to find your perfect fare.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

 

Traveling From
Philadelphia Intl.
Traveling To
Seattle - Tacoma Intl.
Shortest Flight Time
5 hours 51 mins
Earliest Departure Time
7:00AM EDT
Latest Departure Time
6:57PM EDT
Lowest Flight Price
$160

Route Info

Flight path for flights from Philadelphia International Airport to Seattle-Tacoma International Airport


Origin:
PHL - Philadelphia International Airport
Destination:
SEA - Seattle-Tacoma International Airport
Distance:
2,385.00 miles


Airlines & Aircraft Used on PHL to SEA Flight Routes


Airline Carrier
Aircraft
American Airlines
Boeing 737 all pax models
American Airlines
Embraer EMB.110 Bandeirnate
Jet Airways (India)
Airbus A330-200
United Airlines
Airbus A320-100/200

Discover our best flights from Philadelphia PHL to Seattle SEA. 

With 20 airlines to choose from on Travelocity, you can easily find the best option for you. Use our filters to sort by price, compare airlines, and find the most convenient flight times. 

 

Find our best return flights from Philadelphia PHL to Seattle SEA at the right price  

Airfares to Seattle SEA from Philadelphia PHL currently cost between $160 and $203. It’s usually cheaper to book a round trip than two separate one-way flights. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way flights from Philadelphia PHL to Seattle SEA 

If you want to be flexible about when you return, or keep your travel options open ended, a one-way flight could be just the ticket! You’ll find one-way airfares from Philadelphia PHL to Seattle SEA on Travelocity starting at $76. Prices and availability subject to change. Additional terms may apply. 

 

Get to Seattle SEA from Philadelphia PHL quicker with direct flights. 

Get to Seattle faster, without the hassle of changing planes and moving baggage, by booking a direct flight. Expect your direct flight to SEA from PHL to take around 5 hour(s) 51 min(s).  

 

Find our cheapest airfares for flights from Philadelphia PHL to Seattle SEA

Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to SEA from PHL. Our Price Match Promise means if you find a lower rate on Travelocity.com or on another US-based website within 24 hours of booking, we’ll credit or refund the difference.  

 

Get our best airfare deals for your flight from Philadelphia PHL to Seattle SEA today 

If you’re flexible about when you travel, May is usually the cheapest month to fly from Philadelphia PHL to Seattle SEA. If you need to be more specific, search by date and arrival and departure times.Then, compare prices across different airlines, and sort results by lowest price first. 

 

Book flexible airline tickets for flights to Seattle SEA from Philadelphia PHL 

Some airlines let you change your travel dates without charging a fee. Use our ‘no change fee’ filter to see which flights to SEA from PHL have this option.  

 

Travel with confidence when you book flights to Seattle SEA from Philadelphia PHL with Travelocity 

We’ve secured fantastic deals with all the main airline carriers and it’s easy to compare, choose, and book with Travelocity. With 24/7 customer service and our free 'App', we’ll always keep you moving. 

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.