Find Cheap Flights from Seattle/Tacoma Intl to Philadelphia (SEA - PHL)

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
The price shown for each flight will be the average for all passengers including any infants.
Compare vs. KAYAK all | none
Browse Origins:
Browse Destinations:

Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights from Seattle/Tacoma Intl to Philadelphia

(Round-trip)
Depart: Tue Sep 26 2017 Return: Wed Sep 27 2017 Trip spans 2 days
Frontier
Frontier
SEA
6:55a
PHL
5:26p
10h 31m
1 stop
PHL
11:20a
SEA
8:37p
9h 17m
1 stop
Depart: Tue Sep 5 2017 Return: Sun Sep 10 2017 Trip spans 6 days
Major Airline
Major Airline
SEA
10:10p
PHL
5:58p
19h 48m
1 stop
PHL
10:30p
SEA
7:40a
9h 10m
1 stop
Depart: Tue Jun 6 2017 Return: Mon Jun 12 2017 Trip spans 7 days
Spirit Airlines
Spirit Airlines
SEA
11:23a
PHL
11:55p
12h 32m
1 stop
PHL
7:26a
SEA
8:43p
13h 17m
1 stop
Depart: Sat Oct 14 2017 Return: Sat Oct 21 2017 Trip spans 8 days
Delta
Delta
SEA
5:30a
PHL
2:35p
9h 05m
1 stop
PHL
2:30a
SEA
9:54a
7h 24m
1 stop
Depart: Mon Jul 10 2017 Return: Tue Jul 18 2017 Trip spans 9 days
American Airlines
American Airlines
SEA
9:26p
PHL
2:34a
5h 08m
nonstop
PHL
5:00p
SEA
11:11p
6h 11m
nonstop
Depart: Mon Jun 12 2017 Return: Wed Jun 21 2017 Trip spans 10 days
United
United
SEA
1:24p
PHL
12:14a
10h 50m
1 stop
PHL
4:05p
SEA
1:00a
8h 55m
1 stop
Depart: Sun May 28 2017 Return: Sun Jun 4 2017 Trip spans 8 days
Alaska Airlines
Alaska Airlines
SEA
8:35p
PHL
4:37a
8h 02m
1 stop
PHL
2:05a
SEA
10:49a
8h 44m
1 stop
Depart: Tue Aug 29 2017 Return: Sat Sep 2 2017 Trip spans 5 days
Frontier
Frontier
SEA
3:00p
PHL
10:36p
7h 36m
1 stop
PHL
6:50p
SEA
9:07a
14h 17m
1 stop
Depart: Fri Jun 2 2017 Return: Tue Jun 6 2017 Trip spans 5 days
Major Airline
Major Airline
SEA
10:24a
PHL
6:41p
8h 17m
1 stop
PHL
2:25a
SEA
6:07p
15h 42m
1 stop
Depart: Wed Sep 6 2017 Return: Mon Sep 11 2017 Trip spans 6 days
Frontier
Frontier
SEA
6:55a
PHL
5:32p
10h 37m
1 stop
PHL
6:55p
SEA
9:02a
14h 07m
1 stop
Depart: Tue Jul 25 2017 Return: Tue Aug 1 2017 Trip spans 8 days
Spirit Airlines
Spirit Airlines
SEA
11:15a
PHL
11:36p
12h 21m
1 stop
PHL
3:27p
SEA
11:59p
8h 32m
1 stop
Depart: Tue Jul 11 2017 Return: Mon Jul 17 2017 Trip spans 7 days
American Airlines
American Airlines
SEA
6:30p
PHL
11:34p
5h 04m
nonstop
PHL
5:00p
SEA
11:11p
6h 11m
nonstop
Depart: Thu Oct 5 2017 Return: Mon Oct 16 2017 Trip spans 12 days
Major Airline
Major Airline
SEA
3:29p
PHL
1:16a
9h 47m
1 stop
PHL
10:59a
SEA
5:32a
18h 33m
1 stop
Depart: Thu Oct 12 2017 Return: Tue Oct 17 2017 Trip spans 6 days
Frontier
Frontier
SEA
6:55a
PHL
5:26p
10h 31m
1 stop
PHL
6:40p
SEA
9:02a
14h 22m
1 stop
Depart: Tue Jun 13 2017 Return: Mon Jun 19 2017 Trip spans 7 days
United
United
SEA
4:30a
PHL
3:45p
11h 15m
1 stop
PHL
2:15a
SEA
12:13p
9h 58m
1 stop
Depart: Wed Jul 12 2017 Return: Mon Jul 17 2017 Trip spans 6 days
American Airlines
American Airlines
SEA
9:26p
PHL
2:34a
5h 08m
nonstop
PHL
5:00p
SEA
11:11p
6h 11m
nonstop
Depart: Wed Aug 23 2017 Return: Wed Aug 30 2017 Trip spans 8 days
Major Airline
Major Airline
SEA
11:00p
PHL
9:00a
10h 00m
1 stop
PHL
12:24a
SEA
2:53p
14h 29m
1 stop
Depart: Fri Oct 13 2017 Return: Tue Oct 24 2017 Trip spans 12 days
Frontier
Frontier
SEA
6:55a
PHL
5:26p
10h 31m
1 stop
PHL
6:40p
SEA
9:02a
14h 22m
1 stop
Depart: Wed Jun 14 2017 Return: Wed Jun 21 2017 Trip spans 8 days
United
United
SEA
1:12p
PHL
12:14a
11h 02m
1 stop
PHL
4:05p
SEA
1:00a
8h 55m
1 stop
Depart: Wed Jun 21 2017 Return: Wed Jul 5 2017 Trip spans 15 days
Spirit Airlines
Spirit Airlines
SEA
11:15a
PHL
11:36p
12h 21m
1 stop
PHL
3:27p
SEA
11:59p
8h 32m
1 stop
Direct flights SEA to PHL on American Airlines
Flight # Depart SEA Arrive PHL Sun Mon Tue Wed Thu Fri Sat Valid Between
728 8:05 am 4:21 pm May 20 - Jun 1
728 8:05 am 4:17 pm Jun 2 - Aug 21
1742 11:55 am 8:07 pm Jun 5 - Jul 4
496 11:55 am 8:07 pm Jun 2 - Jun 2
1742 10:30 pm 6:40 am May 28 - Jun 1
577 10:30 pm 6:34 am Jun 2 - Jun 30
499 10:55 pm 6:59 am Jun 30 - Jun 30
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

We compile tonnes of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an email and someone from our team will get back to you promptly.

Airports
Origin

Seattle
$306
Destination

Philadelphia
$306
Airlines Airline reviews

33 travelers who booked a flight from Seattle to Philadelphia rated their chosen airlines with an average of 7.7.

Overall
8.0
Boarding
8.3
Crew
8.5
Comfort
7.6
Food
5.7
Entertainment
5.6