Search & Compare - Philadelphia to Seattle Flights & Tickets

Lowest Prices
Uncover the best deals on PHL to SEA flights by comparing fares from hundreds of airlines and agencies.
New Deals Everyday
Get the best prices on PHL to SEA flights—we update our fares daily so you never miss a saving.
Best Travel Options
Compare hundreds of PHL to SEA flights and secure the best deals—we never add any service fees.

Cheap Flights from Philadelphia (PHL) to Seattle (SEA)

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.

Good to know

Useful information for finding cheap flights from Philadelphia International to Seattle Tacoma International and booking your next trip

Cheapest Round Trip Flight

$226

AA American Airlines • 1 stop • 10h 58m

Jul 04 – Jul 12

The cheapest round trip flight from Philadelphia International to Seattle Tacoma International is currently $226

🔍 Search Flights

Cheapest Direct Flight

$228

HA Hawaiian Airlines • nonstop • 9h 17m

Jul 04

The cheapest nonstop flight from Philadelphia International to Seattle Tacoma International is currently $228

🔍 Search Flights

Fastest Flight

9h 17m

The fastest nonstop flight from Philadelphia International to Seattle Tacoma International takes 9h 17m

Recent airfare deals on Philadelphia to Seattle

Jul 04 - Jul 12, Economy
AA
Philadelphia → Seattle
10h 58m
12:49 PM - 9:38 AM • 1 stop
AA
Philadelphia → Seattle
10h 51m
11:56 PM - 10:37 AM • 1 stop
$226
American Airlines
Jul 04 - Jul 12, Economy
AA
Philadelphia → Seattle
10h 58m
12:49 PM - 9:38 AM • 1 stop
AA
Philadelphia → Seattle
15h 12m
6:27 AM - 12:34 AM • 2 stops
$226
American Airlines
Jul 04 - Jul 12, Economy
DL
Philadelphia → Seattle
12h 38m
12:52 PM - 5:50 PM • 1 stop
DL
Philadelphia → Seattle
13h 41m
6:00 AM - 5:21 PM • 1 stop
$284
Delta Airlines
Jul 04 - Jul 12, Economy
F9
Philadelphia → Seattle
12h 13m
1:02 PM - 12:34 AM • 1 stop
AS
Philadelphia → Seattle
8h 30m
9:15 PM - 5:25 AM • nonstop
$474
Frontier Airlines
Jul 04 - Jul 12, Economy
AA
Philadelphia → Seattle
12h 26m
1:24 PM - 7:10 PM • 1 stop
SY
Philadelphia → Seattle
9h 11m
11:59 PM - 11:10 AM • 1 stop
$511
American Airlines
Jul 04 - Jul 12, Economy
UA
Philadelphia → Seattle
18h 34m
12:58 PM - 9:12 PM • 1 stop
UA
Philadelphia → Seattle
15h 12m
5:10 AM - 5:22 PM • nonstop
$747
United Airlines

Facts to know while booking flights from Philadelphia to Seattle

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 6:45 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 226
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 3:000 pm

Essential Information for Booking Flights from Philadelphia (PHL) - AI Insights

What's the cheapest airline from phl to sea?
Delta Airlines (DL) offers the most affordable options from Philadelphia International to Seattle Tacoma International for one passenger in Economy class.
What's the popular airline to fly from phl to sea?
American Airlines (AA) offers popular routes from Philadelphia International to Seattle Tacoma International, providing a convenient option for your travel.
What's the cheapest day of the week to fly from phl to sea?
Saturday is a good day to fly from Philadelphia to Seattle, offering the most affordable fares.
What's the cheapest month to fly from phl to sea?
August is the cheapest month to fly from Philadelphia International to Seattle Tacoma International for one person traveling in Economy class.
What is the cheapest airline to fly from Philadelphia International to Seattle Tacoma International?
Delta Airlines (DL) typically offers the most affordable fares for this route.

Flights from Philadelphia to Seattle

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

Popular Airlines

Southwest Airlines-WN
Delta Airline, DL
United Airlines, UA
American Airlines, AA
Hawaiian Airlines-HA
Alaska Airlines -AS

Popular Origin & Destination

Get Fare Drop Alert
Be the first to know when fares drop for the Philadelphia (PHL) to Seattle (SEA)
Terms and Conditions*