Find Deals on Flights from Washington Dulles Intl 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
The price shown for each flight will be the average for all passengers including any infants.
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Book cheap flights from Washington Dulles Intl to Seattle

(Round-trip)
Depart: Tue Mar 14 2017 Return: Wed Mar 15 2017 Trip spans 2 days
Major Airline
Major Airline
IAD
1:00a
SEA
12:10p
11h 10m
1 stop
SEA
3:05a
IAD
8:10p
17h 05m
1 stop
Depart: Wed Mar 15 2017 Return: Mon Mar 20 2017 Trip spans 6 days
United
United
IAD
4:40a
SEA
10:24a
5h 44m
nonstop
SEA
6:15p
IAD
11:10p
4h 55m
nonstop
Depart: Thu Mar 23 2017 Return: Mon Mar 27 2017 Trip spans 5 days
Alaska Airlines
Alaska Airlines
IAD
1:30p
SEA
7:28p
5h 58m
nonstop
SEA
4:20a
IAD
9:15a
4h 55m
nonstop
Depart: Tue May 2 2017 Return: Tue May 9 2017 Trip spans 8 days
Frontier
Frontier
IAD
2:55p
SEA
9:15a
18h 20m
1 stop
SEA
2:54p
IAD
10:19p
7h 25m
1 stop
Depart: Wed Mar 29 2017 Return: Mon Apr 3 2017 Trip spans 6 days
JetBlue
JetBlue
IAD
6:00a
SEA
10:58p
16h 58m
1 stop
SEA
6:26p
IAD
1:00p
18h 34m
1 stop
Depart: Tue Apr 4 2017 Return: Fri Apr 28 2017 Trip spans 25 days
Delta
Delta
IAD
2:00a
SEA
9:53a
7h 53m
1 stop
SEA
9:10a
IAD
4:08p
6h 58m
1 stop
Depart: Tue Apr 18 2017 Return: Tue Apr 25 2017 Trip spans 8 days
Major Airline
Major Airline
IAD
1:00a
SEA
12:10p
11h 10m
1 stop
SEA
1:50a
IAD
11:55a
10h 05m
1 stop
Depart: Sat Apr 22 2017 Return: Sat May 6 2017 Trip spans 15 days
Major Airline
Major Airline
IAD
1:50a
SEA
11:30a
9h 40m
1 stop
SEA
2:05p
IAD
9:50p
7h 45m
1 stop
Depart: Sat May 27 2017 Return: Sat Jun 3 2017 Trip spans 8 days
Major Airline
Major Airline
IAD
9:30a
SEA
3:28p
5h 58m
nonstop
SEA
12:20a
IAD
5:24a
5h 04m
nonstop
Depart: Wed Mar 22 2017 Return: Mon Mar 27 2017 Trip spans 6 days
United
United
IAD
2:35p
SEA
8:30p
5h 55m
nonstop
SEA
6:15p
IAD
11:10p
4h 55m
nonstop
Depart: Wed May 3 2017 Return: Wed May 10 2017 Trip spans 8 days
Frontier
Frontier
IAD
2:55p
SEA
9:15a
18h 20m
1 stop
SEA
2:24p
IAD
10:19p
7h 55m
1 stop
Depart: Tue Apr 11 2017 Return: Wed Apr 19 2017 Trip spans 9 days
Delta
Delta
IAD
2:00a
SEA
9:53a
7h 53m
1 stop
SEA
2:15a
IAD
9:44a
7h 29m
1 stop
Depart: Mon Apr 17 2017 Return: Tue Apr 18 2017 Trip spans 2 days
JetBlue
JetBlue
IAD
2:45a
SEA
10:58p
20h 13m
1 stop
SEA
6:26p
IAD
1:00p
18h 34m
1 stop
Depart: Mon Mar 27 2017 Return: Tue Mar 28 2017 Trip spans 2 days
United
United
IAD
2:35p
SEA
8:30p
5h 55m
nonstop
SEA
8:50a
IAD
1:47p
4h 57m
nonstop
Depart: Wed May 31 2017 Return: Sun Jun 4 2017 Trip spans 5 days
Major Airline
Major Airline
IAD
9:30a
SEA
3:28p
5h 58m
nonstop
SEA
12:10a
IAD
5:17a
5h 07m
nonstop
Depart: Fri May 5 2017 Return: Tue May 9 2017 Trip spans 5 days
Frontier
Frontier
IAD
2:59p
SEA
9:15a
18h 16m
1 stop
SEA
2:54p
IAD
10:19p
7h 25m
1 stop
Depart: Tue May 23 2017 Return: Wed May 24 2017 Trip spans 2 days
Delta
Delta
IAD
3:30a
SEA
11:18a
7h 48m
1 stop
SEA
9:05a
IAD
4:08p
7h 03m
1 stop
Depart: Sat Mar 25 2017 Return: Mon Mar 27 2017 Trip spans 3 days
Alaska Airlines
Alaska Airlines
IAD
1:30p
SEA
7:28p
5h 58m
nonstop
SEA
4:20a
IAD
9:15a
4h 55m
nonstop
Depart: Thu Mar 30 2017 Return: Mon Apr 3 2017 Trip spans 5 days
JetBlue
JetBlue
IAD
6:00a
SEA
10:58p
16h 58m
1 stop
SEA
6:26p
IAD
1:00p
18h 34m
1 stop
Depart: Tue Mar 28 2017 Return: Wed Mar 29 2017 Trip spans 2 days
United
United
IAD
2:35p
SEA
8:28p
5h 53m
nonstop
SEA
6:15p
IAD
11:10p
4h 55m
nonstop
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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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,
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Airports
Origin

Washington
$254
Destination

Seattle
$254
Airlines Airline reviews

79 travelers who booked a flight from Washington to Seattle rated their chosen airlines with an average of 7.3.

Overall
7.5
Boarding
7.8
Crew
8.0
Comfort
7.2
Food
6.4
Entertainment
6.2