Search & Compare - Seattle to Philadelphia Flights & Tickets

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Cheap flights from Seattle to Philadelphia (SEA to PHL)

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

Good to know

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

Cheapest Round Trip Flight

$728

F9 Frontier Airlines • 1 stop • 12h 11m

Jul 03 – Jul 07

The cheapest round trip flight from Seattle Tacoma International to Philadelphia International is currently $728

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Cheapest One way Flight

$196

NK Spirit Airlines • 2 stops • 27h 6m

Jul 03

The cheapest one way flight from Seattle Tacoma International to Philadelphia International is currently $196

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Cheapest Direct Flight

$752

AS Alaska Airlines • nonstop • 8h 25m

Jul 03

The cheapest nonstop flight from Seattle Tacoma International to Philadelphia International is currently $752

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Fastest Flight

8h 25m

The fastest nonstop flight from Seattle Tacoma International to Philadelphia International takes 8h 25m

Recent airfare deals on Seattle to Philadelphia

Jul 03 - Jul 07, Economy
F9
Seattle → Philadelphia
12h 11m
3:11 PM - 5:49 AM • 1 stop
F9
Seattle → Philadelphia
11h 59m
5:48 PM - 8:30 PM • 1 stop
$728
Frontier Airlines
Jul 03 - Jul 07, Economy
F9
Seattle → Philadelphia
12h 11m
3:11 PM - 5:49 AM • 1 stop
F9
Seattle → Philadelphia
14h 19m
1:02 PM - 12:20 PM • 2 stops
$731
Frontier Airlines
Jul 03 - Jul 07, Economy
DL
Seattle → Philadelphia
10h 13m
7:45 PM - 5:50 AM • 1 stop
SY
Seattle → Philadelphia
10h 41m
12:06 PM - 5:05 PM • 1 stop
$734
Delta Airlines
Jul 03 - Jul 07, Economy
AA
Seattle → Philadelphia
18h 53m
3:17 PM - 5:50 AM • 1 stop
AA
Seattle → Philadelphia
10h 8m
6:35 PM - 9:43 PM • nonstop
$867
American Airlines
Jul 03 - Jul 07, Economy
AA
Seattle → Philadelphia
17h 18m
5:40 PM - 7:18 AM • 1 stop
AA
Seattle → Philadelphia
10h 8m
6:35 PM - 9:43 PM • nonstop
$867
American Airlines
Jul 03 - Jul 07, Economy
AA
Seattle → Philadelphia
15h 10m
5:40 PM - 5:50 AM • 1 stop
AA
Seattle → Philadelphia
10h 8m
6:35 PM - 9:43 PM • nonstop
$867
American Airlines

Facts to know while booking flights from Seattle to Philadelphia

What are the airports in Seattle?
SEA
What’s the most popular airline flying from SEA to PHL?
The most popular airline flying from Seattle to Philadelphia are
Can I fly from SEA to PHL non-stop?
Yes, you can fly SEA to PHL non-stop on
Which airlines fly nonstop between Seattle and Philadelphia?
The non-stop flights between Seattle and Philadelphia are .
What’s the earliest departure time from SEA to PHL Airport?
The earliest flight leaves SEA at 9:42 am and lands in PHL - Philadelphia International
What are the airports in Philadelphia?
PHL
Can I make changes to my Seattle to Philadelphia 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 SEA to PHL?
Read the fare rules of the Seattle to Philadelphia 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 Seattle and Philadelphia?
operate flights between Seattle and Philadelphia
How long does a flight from Seattle to Philadelphia take?
It takes approximately 5 hour to fly non-stop from SEA to PHL, which is 2378.21 miles by air.
Which airlines provide the cheapest flights from Seattle (SEA) to Philadelphia (PHL) ?
In the past couple of days, the cheapest tickets to PHL from SEA were found on ('AS') : USD 361
Do I need a passport to fly between SEA and PHL?
No
What’s the latest departure time from SEA to PHL ?
The last flight leaves SEA at 10:41 pm

Essential Information for Booking Flights from Seattle (SEA) - AI Insights

What's the cheapest airline from sea to phl?
Frontier Airlines (F9), offers the most affordable options from Seattle Tacoma International Airport to Philadelphia International Airport.
What's the popular airline to fly from sea to phl?
American Airlines (AA) offers popular routes from Seattle Tacoma International Airport to Philadelphia International Airport, suitable for a single passenger traveling in Economy class.
What's the cheapest day of the week to fly from sea to phl?
Thursday is the cheapest day to fly from Seattle Tacoma International to Philadelphia International.
What's the cheapest month to fly from sea to phl?
March is the month with the most affordable flights from Seattle Tacoma International to Philadelphia International.
What are the best airlines to fly from Seattle Tacoma International Airport to Philadelphia International Airport?
Frontier Airlines (F9) is a popular choice for this route, offering competitive fares.
When is it generally cheaper to fly from Seattle Tacoma International Airport to Philadelphia International Airport?
Thursday is generally considered a good day to find cheaper flights.
What months are most likely to have the lowest airfare for travel from Seattle Tacoma International Airport to Philadelphia International Airport?
March is often a favorable month for travel, with lower fares available.

Flights from Seattle to Philadelphia

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

Popular Airlines

Southwest Airlines-WN
Delta Airline, DL
United Airlines, UA
Sun Country Airlines (SY)
American Airlines, AA
Hawaiian Airlines-HA
Spirit Airlines-NK
Alaska Airlines -AS

Popular Origin & Destination

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