Find Deals on Flights from Philadelphia to Seattle

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
Students
under 26
The price shown for each flight will be the average for all passengers including any infants.
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Book cheap flights from Philadelphia to Seattle

(Round-trip)
Depart: Sat Jan 21 2017 Return: Thu Jan 26 2017 Trip spans 6 days
Frontier
Frontier
PHL
1:00a
SEA
4:02p
15h 02m
1 stop
SEA
5:10a
PHL
1:57p
8h 47m
1 stop
Depart: Tue Jan 17 2017 Return: Tue Jan 24 2017 Trip spans 8 days
Major Airline
Major Airline
PHL
10:19p
SEA
7:21a
9h 02m
1 stop
SEA
8:00p
PHL
6:56a
10h 56m
1 stop
Depart: Sat Jan 14 2017 Return: Sat Jan 21 2017 Trip spans 8 days
Alaska Airlines
Alaska Airlines
PHL
12:35p
SEA
6:45p
6h 10m
nonstop
SEA
3:30a
PHL
8:35a
5h 05m
nonstop
Depart: Fri Jan 27 2017 Return: Mon Jan 30 2017 Trip spans 4 days
JetBlue
JetBlue
PHL
3:19a
SEA
12:21p
9h 02m
1 stop
SEA
6:12p
PHL
1:40a
7h 28m
1 stop
Depart: Mon Dec 12 2016 Return: Tue Dec 13 2016 Trip spans 2 days
Spirit Airlines
Spirit Airlines
PHL
1:40a
SEA
6:34p
16h 54m
1 stop
SEA
1:00a
PHL
11:50a
10h 50m
1 stop
Depart: Thu Dec 15 2016 Return: Tue Jan 10 2017 Trip spans 27 days
American Airlines
American Airlines
PHL
3:50p
SEA
9:55p
6h 05m
nonstop
SEA
3:15a
PHL
8:20a
5h 05m
nonstop
Depart: Mon May 15 2017 Return: Tue May 16 2017 Trip spans 2 days
United
United
PHL
1:30p
SEA
11:15p
9h 45m
1 stop
SEA
2:00a
PHL
10:23a
8h 23m
1 stop
Depart: Mon Jan 23 2017 Return: Wed Jan 25 2017 Trip spans 3 days
Frontier
Frontier
PHL
1:00a
SEA
4:02p
15h 02m
1 stop
SEA
5:10a
PHL
1:57p
8h 47m
1 stop
Depart: Wed Mar 1 2017 Return: Tue Mar 7 2017 Trip spans 7 days
Major Airline
Major Airline
PHL
12:35a
SEA
11:40a
11h 05m
1 stop
SEA
2:46a
PHL
6:43p
15h 57m
1 stop
Depart: Wed Jan 18 2017 Return: Wed Jan 25 2017 Trip spans 8 days
Frontier
Frontier
PHL
1:00a
SEA
4:02p
15h 02m
1 stop
SEA
5:10a
PHL
1:57p
8h 47m
1 stop
Depart: Sat Mar 25 2017 Return: Thu May 4 2017 Trip spans 41 days
Delta
Delta
PHL
2:00a
SEA
8:45p
18h 45m
2 stops
SEA
3:15a
PHL
10:05a
6h 50m
1 stop
Depart: Thu Jan 19 2017 Return: Mon Jan 23 2017 Trip spans 5 days
Frontier
Frontier
PHL
1:00a
SEA
4:02p
15h 02m
1 stop
SEA
5:10a
PHL
1:57p
8h 47m
1 stop
Depart: Fri Jan 6 2017 Return: Fri Jan 13 2017 Trip spans 8 days
Major Airline
Major Airline
PHL
8:00p
SEA
11:02a
15h 02m
1 stop
SEA
1:14p
PHL
8:40p
7h 26m
1 stop
Depart: Wed Feb 15 2017 Return: Wed Feb 22 2017 Trip spans 8 days
Frontier
Frontier
PHL
1:00a
SEA
4:02p
15h 02m
1 stop
SEA
5:10a
PHL
1:57p
8h 47m
1 stop
Depart: Wed Feb 1 2017 Return: Sat Feb 4 2017 Trip spans 4 days
Alaska Airlines
Alaska Airlines
PHL
12:35p
SEA
6:45p
6h 10m
nonstop
SEA
3:30a
PHL
8:35a
5h 05m
nonstop
Depart: Sun Jan 8 2017 Return: Sat Jan 14 2017 Trip spans 7 days
Major Airline
Major Airline
PHL
10:19p
SEA
7:21a
9h 02m
1 stop
SEA
12:10a
PHL
8:57a
8h 47m
1 stop
Depart: Sat Mar 11 2017 Return: Mon Mar 20 2017 Trip spans 9 days
JetBlue
JetBlue
PHL
9:50a
SEA
8:47p
10h 57m
1 stop
SEA
7:38p
PHL
6:56a
11h 18m
1 stop
Depart: Sat Feb 18 2017 Return: Wed Feb 22 2017 Trip spans 5 days
Frontier
Frontier
PHL
1:00a
SEA
4:02p
15h 02m
1 stop
SEA
5:10a
PHL
1:57p
8h 47m
1 stop
Depart: Sat Feb 4 2017 Return: Wed Feb 8 2017 Trip spans 5 days
Alaska Airlines
Alaska Airlines
PHL
12:35p
SEA
6:45p
6h 10m
nonstop
SEA
3:30a
PHL
8:32a
5h 02m
nonstop
Depart: Fri Jan 20 2017 Return: Sun Jan 22 2017 Trip spans 3 days
Major Airline
Major Airline
PHL
4:25a
SEA
3:21p
10h 56m
1 stop
SEA
2:13a
PHL
6:42p
16h 29m
1 stop
* 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.

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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

Philadelphia
$227
Destination

Seattle
$227
Airlines Airline reviews

25 travelers who booked a flight from Philadelphia to Seattle rated their chosen airlines with an average of 7.1.

Overall
7.3
Boarding
7.8
Crew
8.2
Comfort
7.0
Food
6.3
Entertainment
6.0