Cheap Flight Tickets from Philadelphia (PHL) to Seattle (SEA), Starting at $408

Good to Know: Cheapest and Fastest PHL - SEA Flights

Useful information for finding best airline tickets from Philadelphia International to Seattle Tacoma International on your next trip.

Cheapest Round Trip Flight

$496

F9 Frontier Airlines • 1 stop • 25h 40m

Jul 24 – Aug 02

The cheapest round trip flight from Philadelphia to Seattle (PHL-SEA-PHL) is currently $496

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Cheapest One way Flight

$408

AA American Airlines • 1 stop • 15h 39m

Jul 17

The cheapest one way flight from Philadelphia to Seattle (PHL-SEA) is currently $408

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Cheapest Direct Flight

$517

AS Alaska Airlines • nonstop • 9h 19m

Jul 24

The cheapest nonstop flight from Philadelphia to Seattle (PHL-SEA) is currently $517

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Fastest Flight

9h 16m

The fastest nonstop flight from Philadelphia to Seattle (PHL-SEA) takes 9h 16m

Top Airlines Flying from Philadelphia to Seattle

Southwest Airlines-WN

Southwest Airlines

Delta Airline, DL

Delta Airlines

United Airlines, UA

United Airlines

Sun Country Airlines (SY)

Sun Country Airlines

American Airlines, AA

American Airlines

Alaska Airlines -AS

Alaska Airlines

WestJet Airlines

WestJet Airlines

Latest Flight Deals from Philadelphia (PHL) to Seattle (SEA)

Compare and book low fare round-trip air tickets from Philadelphia to Seattle. Ideal for travelers with confirmed return itineraries.

Jul 24 - Aug 02, Economy
F9
Philadelphia → Seattle
25h 40m
8:37 PM - 9:17 AM • 1 stop
AS
Philadelphia → Seattle
50h 7m
10:02 PM - 6:13 AM • nonstop
$496
Frontier Airlines
Jul 24 - Aug 02, Economy
F9
Philadelphia → Seattle
43h 53m
11:06 AM - 10:39 AM • 1 stop
F9
Philadelphia → Seattle
12h 13m
7:06 PM - 5:39 AM • 1 stop
$505
Frontier Airlines
Jul 24 - Aug 02, Economy
AS
Philadelphia → Seattle
12h 21m
5:46 PM - 10:27 PM • 1 stop
AS
Philadelphia → Seattle
8h 31m
10:02 PM - 6:13 AM • nonstop
$625
Alaska Airlines
Jul 24 - Aug 02, Economy
DL
Philadelphia → Seattle
16h 45m
7:30 AM - 2:35 PM • 1 stop
DL
Philadelphia → Seattle
12h 28m
11:59 PM - 10:47 AM • 1 stop
$656
Delta Airlines
Jul 24 - Aug 02, Economy
B6
Philadelphia → Seattle
30h 32m
8:55 PM - 12:27 PM • 1 stop
B6
Philadelphia → Seattle
28h 34m
11:46 PM - 8:00 PM • 1 stop
$710
JetBlue Airways
Jul 24 - Aug 02, Economy
WN
Philadelphia → Seattle
13h 25m
4:45 PM - 9:50 PM • 1 stop
WN
Philadelphia → Seattle
13h 45m
5:30 AM - 4:55 PM • 2 stops
$778
Southwest Airlines

Fly from Philadelphia to Seattle with the Best Airfare Deals on FareLeaders

Looking for a cheap last-minute deal or the best round-trip flight from Philadelphia to Seattle? Find the biggest savings on one-way and round-trip tickets right here.

FAQs on Philadelphia to Seattle Flights

What are the airports in Philadelphia?
PHL
What’s the most popular airline flying from PHL to SEA?
The most popular airline flying from Philadelphia to Seattle are
Can I fly from PHL to SEA non-stop?
Yes, you can fly PHL to SEA non-stop on
Which airlines fly nonstop between Philadelphia and Seattle?
The non-stop flights between Philadelphia and Seattle are .
What’s the earliest departure time from PHL to SEA Airport?
The earliest flight leaves PHL at 5:00 am and lands in SEA - Seattle Tacoma International
What are the airports in Seattle?
SEA
Can I make changes to my Philadelphia to Seattle flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from PHL to SEA?
Read the fare rules of the Philadelphia to Seattle air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Philadelphia and Seattle?
operate flights between Philadelphia and Seattle
How long does a flight from Philadelphia to Seattle take?
It takes approximately 5 hour to fly non-stop from PHL to SEA, which is 2378.21 miles by air.
Which airlines provide the cheapest flights from Philadelphia (PHL) to Seattle (SEA) ?
In the past couple of days, the cheapest tickets to SEA from PHL were found on AA : USD 408
Do I need a passport to fly between PHL and SEA?
No
What’s the latest departure time from PHL to SEA ?
The last flight leaves PHL at 8:55 pm

Philadelphia (PHL) to Seattle (SEA): Airport Information

Origin Airport Philadelphia International , Philadelphia, US
Destination Airport Seattle Tacoma International , Seattle, US
Distance 2378 miles

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