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: Mon Oct 3 2016 Return: Fri Oct 7 2016 Trip spans 5 days
Depart: Wed Sep 21 2016 Return: Sat Sep 24 2016 Trip spans 4 days
Depart: Wed Aug 17 2016 Return: Thu Aug 18 2016 Trip spans 2 days
Depart: Tue Oct 25 2016 Return: Wed Nov 2 2016 Trip spans 9 days
Depart: Tue Nov 1 2016 Return: Thu Nov 3 2016 Trip spans 3 days
Depart: Fri Dec 2 2016 Return: Mon Dec 5 2016 Trip spans 4 days
Depart: Sun Jan 29 2017 Return: Fri Feb 3 2017 Trip spans 6 days
Depart: Tue Oct 4 2016 Return: Tue Oct 11 2016 Trip spans 8 days
Depart: Fri Oct 7 2016 Return: Mon Oct 10 2016 Trip spans 4 days
Depart: Wed Sep 14 2016 Return: Tue Sep 20 2016 Trip spans 7 days
Depart: Tue Oct 11 2016 Return: Tue Oct 18 2016 Trip spans 8 days
Depart: Sat Oct 8 2016 Return: Sat Oct 15 2016 Trip spans 8 days
Depart: Mon Nov 7 2016 Return: Mon Nov 14 2016 Trip spans 8 days
Depart: Sat Oct 15 2016 Return: Tue Oct 18 2016 Trip spans 4 days
Depart: Tue Oct 18 2016 Return: Thu Oct 20 2016 Trip spans 3 days
Depart: Tue Aug 30 2016 Return: Wed Sep 7 2016 Trip spans 9 days
Depart: Thu Aug 18 2016 Return: Wed Aug 24 2016 Trip spans 7 days
Depart: Wed Nov 16 2016 Return: Fri Nov 25 2016 Trip spans 10 days
Depart: Sat Dec 3 2016 Return: Mon Dec 5 2016 Trip spans 3 days
Depart: Thu Nov 10 2016 Return: Tue Nov 15 2016 Trip spans 6 days
Direct flights IAD to SEA on United
Flight # Depart IAD Arrive SEA Sun Mon Tue Wed Thu Fri Sat Valid Between
389 8:55 am 11:35 am Aug 28 - Aug 28
389 8:55 am 11:37 am Aug 16 - Aug 16
389 8:55 am 11:37 am Aug 17 - Aug 24
389 8:55 am 11:37 am Aug 18 - Aug 22
389 8:55 am 11:37 am Aug 20 - Aug 27
389 8:55 am 11:37 am Aug 25 - Aug 26
389 8:55 am 11:37 am Aug 29 - Sep 1
389 8:55 am 11:37 am Sep 2 - Sep 5
389 8:55 am 11:37 am Sep 3 - Sep 3
389 8:55 am 11:35 am Sep 4 - Sep 4
389 9:05 am 11:50 am Jul 30 - Aug 13
389 9:05 am 11:50 am Jul 28 - Aug 5
389 9:05 am 11:50 am Jul 31 - Aug 14
389 9:05 am 11:50 am Aug 8 - Aug 15
389 9:05 am 11:48 am Aug 10 - Aug 10
1603 3:30 pm 6:15 pm Aug 7 - Aug 14
1603 3:30 pm 6:15 pm Jul 29 - Aug 12
1603 3:40 pm 6:25 pm Aug 2 - Aug 10
1603 3:47 pm 6:28 pm Jul 28 - Aug 11
1603 3:47 pm 6:28 pm Aug 15 - Aug 15
1603 3:47 pm 6:32 pm Aug 6 - Aug 13
1603 3:55 pm 6:27 pm Aug 25 - Sep 5
1603 3:55 pm 6:27 pm Aug 18 - Aug 18
1603 3:55 pm 6:27 pm Aug 16 - Aug 24
1603 3:55 pm 6:27 pm Aug 20 - Sep 3
326 6:35 pm 9:24 pm Sep 5 - Sep 5
326 6:35 pm 9:24 pm Aug 16 - Aug 21
326 6:35 pm 9:24 pm Aug 17 - Sep 2
326 6:35 pm 9:24 pm Aug 20 - Aug 27
326 6:35 pm 9:24 pm Aug 28 - Sep 4
326 6:35 pm 9:24 pm Sep 3 - Sep 3
326 6:40 pm 9:32 pm Aug 7 - Aug 14
326 6:40 pm 9:32 pm Aug 6 - Aug 6
326 6:40 pm 9:32 pm Jul 29 - Aug 12
326 6:40 pm 9:32 pm Aug 15 - Aug 15
326 6:40 pm 9:32 pm Aug 8 - Aug 13
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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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
$244
Destination

Seattle
$244
Airlines Airline reviews

38 travelers who booked a flight from Washington to Seattle rated their chosen airlines with an average of 7.2.

Overall
7.6
Boarding
7.7
Crew
8.0
Comfort
7.2
Food
6.4
Entertainment
6.1