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 Aug 29 2016 Return: Sat Sep 10 2016 Trip spans 13 days
Depart: Tue Sep 27 2016 Return: Sat Oct 1 2016 Trip spans 5 days
Depart: Wed Aug 17 2016 Return: Tue Aug 30 2016 Trip spans 14 days
Depart: Thu Nov 3 2016 Return: Thu Nov 10 2016 Trip spans 8 days
Depart: Tue Aug 9 2016 Return: Tue Aug 16 2016 Trip spans 8 days
Depart: Mon Jun 20 2016 Return: Wed Jun 29 2016 Trip spans 10 days
Depart: Sun Oct 9 2016 Return: Mon Oct 10 2016 Trip spans 2 days
Depart: Wed Sep 7 2016 Return: Mon Sep 12 2016 Trip spans 6 days
Depart: Wed Oct 12 2016 Return: Wed Oct 19 2016 Trip spans 8 days
Depart: Sat Aug 27 2016 Return: Sat Sep 3 2016 Trip spans 8 days
Depart: Tue Aug 16 2016 Return: Wed Aug 24 2016 Trip spans 9 days
Depart: Wed Aug 31 2016 Return: Wed Sep 7 2016 Trip spans 8 days
Depart: Thu Sep 15 2016 Return: Tue Sep 20 2016 Trip spans 6 days
Depart: Tue Aug 23 2016 Return: Wed Aug 31 2016 Trip spans 9 days
Depart: Sat Sep 3 2016 Return: Sat Sep 10 2016 Trip spans 8 days
Depart: Mon Oct 3 2016 Return: Fri Oct 7 2016 Trip spans 5 days
Depart: Wed Aug 24 2016 Return: Wed Aug 31 2016 Trip spans 8 days
Depart: Sat Sep 10 2016 Return: Tue Sep 13 2016 Trip spans 4 days
Depart: Sat Nov 5 2016 Return: Sat Nov 12 2016 Trip spans 8 days
Depart: Wed Aug 10 2016 Return: Tue Aug 16 2016 Trip spans 7 days
Direct flights IAD to SEA on United
Flight # Depart IAD Arrive SEA Sun Mon Tue Wed Thu Fri Sat Valid Between
389 8:15 am 11:02 am Jun 11 - Jun 25
389 8:51 am 11:40 am Jun 5 - Jun 8
389 8:55 am 11:42 am Jun 9 - Jun 9
389 8:55 am 11:42 am Jun 24 - Jun 24
389 8:55 am 11:42 am Jun 21 - Jun 26
389 8:55 am 11:42 am Jun 22 - Jun 22
389 8:55 am 11:42 am Jun 16 - Jun 16
389 8:55 am 11:42 am Jun 14 - Jun 14
389 8:55 am 11:42 am Jun 13 - Jun 15
389 8:55 am 11:42 am Jun 27 - Jun 27
389 8:55 am 11:42 am Jun 28 - Jun 30
389 8:55 am 11:42 am Jun 29 - Jun 29
389 8:55 am 11:42 am Jun 10 - Jun 10
389 8:55 am 11:42 am Jun 12 - Jun 19
389 8:55 am 11:42 am Jun 20 - Jun 23
389 9:05 am 11:50 am Jul 2 - Jul 3
389 9:05 am 11:48 am Jul 6 - Jul 6
389 9:05 am 11:50 am Jul 1 - Jul 1
389 9:05 am 11:50 am Jul 4 - Jul 4
389 9:05 am 11:50 am Jul 5 - Jul 29
1603 2:43 pm 5:30 pm Jun 12 - Jun 26
1603 3:30 pm 6:15 pm Jul 8 - Aug 12
1603 3:30 pm 6:15 pm Jul 1 - Jul 1
1603 3:30 pm 6:15 pm May 31 - Jun 7
1603 3:30 pm 6:15 pm May 26 - Jun 8
1603 3:35 pm 6:22 pm Jun 9 - Jun 30
1603 3:35 pm 6:22 pm Jun 11 - Jun 28
1603 3:40 pm 6:25 pm Jul 4 - Jul 4
1603 3:40 pm 6:25 pm Jul 2 - Jul 6
1603 3:47 pm 6:32 pm Jul 3 - Jul 3
1603 3:47 pm 6:28 pm Jul 7 - Jul 14
326 5:13 pm 8:06 pm Jun 7 - Jun 7
326 5:42 pm 8:39 pm Jun 8 - Jun 8
326 6:20 pm 9:14 pm Jun 22 - Jun 22
326 6:20 pm 9:14 pm Jun 12 - Jun 26
326 6:20 pm 9:14 pm Jun 10 - Jun 20
326 6:20 pm 9:14 pm Jun 11 - Jun 11
326 6:20 pm 9:14 pm Jun 23 - Jun 30
326 6:20 pm 9:14 pm Jun 9 - Jun 9
326 6:20 pm 9:14 pm Jun 28 - Jun 28
326 6:20 pm 9:14 pm Jun 14 - Jun 21
326 6:32 pm 9:23 pm Jun 25 - Jun 25
326 6:40 pm 9:32 pm Jul 1 - Jul 1
326 6:40 pm 9:32 pm Jul 5 - Jul 12
326 6:40 pm 9:32 pm Jul 3 - Jul 3
326 6:40 pm 9:32 pm Jul 4 - Jul 4
326 6:40 pm 9:32 pm Jul 2 - Jul 2
326 6:40 pm 9:32 pm Jul 6 - Jul 11
326 6:40 pm 9:32 pm Jul 8 - Aug 12
* 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?
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Airports
Origin

Washington
$266
Destination

Seattle
$266
Airlines Airline reviews

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

Overall
7.5
Boarding
7.9
Crew
8.2
Comfort
7.4
Food
6.8
Entertainment
6.3