Cheap Flight Tickets from Philadelphia (PHL) to Seattle (SEA), Starting at $637

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

$647

DL Delta Airlines • 1 stop • 13h 30m

Oct 15 – Oct 18

The cheapest round trip flight from Philadelphia to Seattle (PHL-SEA-PHL) is currently $647

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Cheapest Direct Flight

$637

DL Delta Airlines • nonstop • 9h 18m

Oct 15

The cheapest nonstop flight from Philadelphia to Seattle (PHL-SEA) is currently $637

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Fastest Flight

9h 18m

The fastest nonstop flight from Philadelphia to Seattle (PHL-SEA) takes 9h 18m

Top Airlines Flying from Philadelphia to Seattle

Southwest Airlines-WN

Southwest Airlines

Delta Airline, DL

Delta 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.

Oct 15 - Oct 18, Economy
DL
Philadelphia → Seattle
13h 30m
6:49 PM - 11:59 PM • 1 stop
DL
Philadelphia → Seattle
8h 34m
9:30 PM - 5:44 AM • nonstop
$647
Delta Airlines
Oct 15 - Oct 18, Economy
DL
Philadelphia → Seattle
18h 26m
3:46 PM - 11:52 PM • 1 stop
DL
Philadelphia → Seattle
8h 34m
9:30 PM - 5:44 AM • nonstop
$647
Delta Airlines
Oct 15 - Oct 18, Economy
DL
Philadelphia → Seattle
18h 41m
7:55 AM - 4:16 PM • 1 stop
DL
Philadelphia → Seattle
10h 50m
11:10 PM - 9:00 AM • 1 stop
$656
Delta Airlines
Oct 15 - Oct 18, Economy
DL
Philadelphia → Seattle
17h 17m
2:26 PM - 10:03 PM • 1 stop
DL
Philadelphia → Seattle
10h 50m
11:10 PM - 9:00 AM • 1 stop
$656
Delta Airlines
Oct 15 - Oct 18, Economy
DL
Philadelphia → Seattle
16h 42m
5:20 AM - 12:22 PM • 1 stop
DL
Philadelphia → Seattle
8h 34m
9:30 PM - 5:44 AM • nonstop
$803
Delta Airlines
Oct 15 - Oct 18, Economy
DL
Philadelphia → Seattle
16h 42m
5:20 AM - 12:22 PM • 1 stop
DL
Philadelphia → Seattle
11h 50m
7:55 PM - 6:05 AM • 1 stop
$812
Delta 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 5:20 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 DL : USD 812
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 6:49 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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