Find Deals on Flights from Washington Dulles Intl to Seattle/Tacoma Intl (IAD - SEA)

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/Tacoma Intl

(Round-trip)
Depart: Tue Feb 23 2016 Return: Sat Feb 27 2016 Trip spans 5 days
Virgin America
Virgin America
IAD
4:00a
SEA
3:25p
11h 25m
1 stop
SEA
3:50a
IAD
2:20p
10h 30m
1 stop
Depart: Tue Mar 1 2016 Return: Wed Mar 2 2016 Trip spans 2 days
Alaska Airlines
Alaska Airlines
IAD
1:50p
SEA
7:55p
6h 05m
nonstop
SEA
4:50a
IAD
9:50a
5h 00m
nonstop
Depart: Wed Mar 2 2016 Return: Tue Mar 8 2016 Trip spans 7 days
Alaska Airlines
Alaska Airlines
IAD
1:50p
SEA
7:55p
6h 05m
nonstop
SEA
4:50a
IAD
9:50a
5h 00m
nonstop
Depart: Sat Mar 5 2016 Return: Tue Mar 8 2016 Trip spans 4 days
Alaska Airlines
Alaska Airlines
IAD
1:50p
SEA
7:55p
6h 05m
nonstop
SEA
4:50a
IAD
9:50a
5h 00m
nonstop
Depart: Tue Mar 8 2016 Return: Wed Mar 9 2016 Trip spans 2 days
Alaska Airlines
Alaska Airlines
IAD
1:50p
SEA
7:55p
6h 05m
nonstop
SEA
4:50a
IAD
9:50a
5h 00m
nonstop
Depart: Wed Feb 24 2016 Return: Sat Feb 27 2016 Trip spans 4 days
Virgin America
Virgin America
IAD
4:00a
SEA
3:25p
11h 25m
1 stop
SEA
3:50a
IAD
2:20p
10h 30m
1 stop
Depart: Wed Mar 9 2016 Return: Tue Mar 15 2016 Trip spans 6 days
Virgin America
Virgin America
IAD
4:00a
SEA
3:25p
11h 25m
1 stop
SEA
3:00a
IAD
10:45a
7h 45m
1 stop
Depart: Wed Mar 16 2016 Return: Wed Mar 30 2016 Trip spans 15 days
Virgin America
Virgin America
IAD
5:00a
SEA
3:50p
10h 50m
1 stop
SEA
6:10a
IAD
4:00p
9h 50m
1 stop
Depart: Tue Mar 29 2016 Return: Tue Apr 5 2016 Trip spans 8 days
Virgin America
Virgin America
IAD
5:00a
SEA
3:50p
10h 50m
1 stop
SEA
1:35p
IAD
12:30a
10h 55m
1 stop
Depart: Tue Apr 5 2016 Return: Wed Apr 6 2016 Trip spans 2 days
Virgin America
Virgin America
IAD
5:00a
SEA
3:50p
10h 50m
1 stop
SEA
3:00a
IAD
10:45a
7h 45m
1 stop
Depart: Wed Apr 6 2016 Return: Wed Apr 13 2016 Trip spans 8 days
Virgin America
Virgin America
IAD
5:00a
SEA
3:50p
10h 50m
1 stop
SEA
12:50p
IAD
10:55p
10h 05m
1 stop
Depart: Tue Apr 12 2016 Return: Sat Apr 23 2016 Trip spans 12 days
Virgin America
Virgin America
IAD
3:10a
SEA
3:05p
11h 55m
1 stop
SEA
5:00a
IAD
4:00p
11h 00m
1 stop
Depart: Wed Apr 13 2016 Return: Tue Apr 19 2016 Trip spans 7 days
Virgin America
Virgin America
IAD
3:10a
SEA
3:05p
11h 55m
1 stop
SEA
1:35p
IAD
12:30a
10h 55m
1 stop
Depart: Tue Apr 19 2016 Return: Sat Apr 23 2016 Trip spans 5 days
Virgin America
Virgin America
IAD
3:10a
SEA
3:05p
11h 55m
1 stop
SEA
5:00a
IAD
4:00p
11h 00m
1 stop
Depart: Wed Apr 20 2016 Return: Sat Apr 23 2016 Trip spans 4 days
Virgin America
Virgin America
IAD
5:00a
SEA
3:50p
10h 50m
1 stop
SEA
7:15a
IAD
4:00p
8h 45m
1 stop
Depart: Sat Apr 23 2016 Return: Wed Apr 27 2016 Trip spans 5 days
Virgin America
Virgin America
IAD
5:00a
SEA
5:20p
12h 20m
1 stop
SEA
5:50a
IAD
4:05p
10h 15m
1 stop
Depart: Sun Feb 28 2016 Return: Fri Mar 4 2016 Trip spans 6 days
United
United
IAD
12:47p
SEA
6:45p
5h 58m
nonstop
SEA
5:00p
IAD
9:59p
4h 59m
nonstop
Depart: Sat Feb 27 2016 Return: Tue Mar 1 2016 Trip spans 4 days
American Airlines
American Airlines
IAD
10:18a
SEA
7:22p
9h 04m
1 stop
SEA
8:30a
IAD
3:25p
6h 55m
1 stop
Depart: Fri Feb 26 2016 Return: Wed Mar 2 2016 Trip spans 6 days
Delta
Delta
IAD
9:00a
SEA
8:32p
11h 32m
1 stop
SEA
6:26a
IAD
3:18p
8h 52m
1 stop
Depart: Thu Jul 14 2016 Return: Mon Jul 18 2016 Trip spans 5 days
JetBlue
JetBlue
IAD
10:50a
SEA
10:59p
12h 09m
1 stop
SEA
7:26p
IAD
3:21a
7h 55m
1 stop
Direct flights IAD to SEA on United
Flight # Depart IAD Arrive SEA Sun Mon Tue Wed Thu Fri Sat Valid Between
389 8:45 am 11:43 am Feb 17 - Feb 17
389 8:45 am 11:45 am Feb 22 - Mar 1
389 8:45 am 11:43 am Feb 24 - Feb 24
389 8:45 am 11:45 am Mar 2 - Mar 2
389 8:45 am 11:45 am Feb 12 - Feb 19
389 8:53 am 11:42 am Mar 9 - Mar 9
389 8:53 am 11:40 am Mar 16 - Mar 30
389 8:53 am 11:42 am Mar 14 - Mar 17
389 8:53 am 11:40 am Mar 15 - Mar 15
389 8:53 am 11:42 am Mar 3 - Mar 3
389 8:53 am 11:42 am Mar 7 - Mar 10
389 8:53 am 11:40 am Mar 8 - Mar 8
771 3:15 pm 6:00 pm Mar 15 - Mar 22
771 3:15 pm 6:00 pm Mar 8 - Mar 8
771 3:22 pm 6:07 pm Mar 14 - Mar 31
771 3:22 pm 6:07 pm Mar 18 - Apr 1
771 3:22 pm 6:07 pm Mar 4 - Mar 11
771 3:22 pm 6:07 pm Mar 3 - Mar 10
326 5:40 pm 8:37 pm Mar 19 - Mar 19
326 5:40 pm 8:37 pm Mar 12 - Mar 12
326 5:40 pm 8:37 pm Mar 5 - Mar 5
326 5:43 pm 8:40 pm Mar 3 - Mar 10
326 5:43 pm 8:40 pm Mar 4 - Mar 4
326 5:43 pm 8:40 pm Mar 8 - Mar 8
326 5:43 pm 8:40 pm Mar 11 - Mar 11
326 5:43 pm 8:40 pm Mar 14 - Mar 24
326 5:43 pm 8:40 pm Mar 18 - Mar 18
326 5:43 pm 8:40 pm Mar 15 - Mar 15
326 5:45 pm 8:42 pm Mar 13 - Mar 20
326 5:45 pm 8:42 pm Mar 9 - Mar 9
326 5:45 pm 8:42 pm Mar 6 - Mar 6
326 5:45 pm 8:42 pm Mar 16 - Mar 23
326 5:47 pm 8:45 pm Feb 22 - Feb 22
326 5:47 pm 8:45 pm Feb 20 - Feb 20
326 5:47 pm 8:45 pm Feb 16 - Mar 1
326 5:47 pm 8:45 pm Feb 13 - Feb 17
326 5:47 pm 8:45 pm Feb 29 - Feb 29
326 5:47 pm 8:45 pm Feb 11 - Feb 25
326 5:47 pm 8:45 pm Feb 12 - Feb 19
326 5:47 pm 8:45 pm Feb 21 - Mar 2
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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

Here's why:

We’re not the seller
At KAYAK we don’t set 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 don'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.

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Airports
Origin

Washington
$271
Destination

Seattle
$271