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

Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights from Washington Dulles Intl to Seattle/Tacoma Intl

(Round-trip)
Depart: Wed Sep 2 2015 Return: Wed Sep 16 2015 Trip spans 15 days
American Airlines
American Airlines
IAD
1:20a
SEA
8:59a
7h 39m
1 stop
SEA
9:20a
IAD
4:24p
7h 04m
1 stop
Depart: Tue Sep 8 2015 Return: Wed Sep 16 2015 Trip spans 9 days
US Airways
US Airways
IAD
1:20a
SEA
8:59a
7h 39m
1 stop
SEA
9:20a
IAD
4:24p
7h 04m
1 stop
Depart: Wed Sep 9 2015 Return: Wed Sep 16 2015 Trip spans 8 days
US Airways
US Airways
IAD
1:20a
SEA
9:07a
7h 47m
1 stop
SEA
9:20a
IAD
4:24p
7h 04m
1 stop
Depart: Sat Sep 12 2015 Return: Tue Sep 15 2015 Trip spans 4 days
US Airways
US Airways
IAD
9:45a
SEA
7:52p
10h 07m
1 stop
SEA
6:15p
IAD
3:33a
9h 18m
1 stop
Depart: Tue Sep 15 2015 Return: Wed Sep 16 2015 Trip spans 2 days
US Airways
US Airways
IAD
1:20a
SEA
9:07a
7h 47m
1 stop
SEA
9:20a
IAD
4:24p
7h 04m
1 stop
Depart: Wed Sep 16 2015 Return: Tue Sep 22 2015 Trip spans 7 days
US Airways
US Airways
IAD
9:45a
SEA
7:52p
10h 07m
1 stop
SEA
6:15p
IAD
1:46a
7h 31m
1 stop
Depart: Sat Sep 19 2015 Return: Tue Sep 22 2015 Trip spans 4 days
US Airways
US Airways
IAD
1:20a
SEA
9:07a
7h 47m
1 stop
SEA
6:15p
IAD
1:46a
7h 31m
1 stop
Depart: Tue Sep 22 2015 Return: Wed Sep 23 2015 Trip spans 2 days
American Airlines
American Airlines
IAD
1:20a
SEA
9:07a
7h 47m
1 stop
SEA
9:20a
IAD
4:24p
7h 04m
1 stop
Depart: Wed Sep 23 2015 Return: Tue Sep 29 2015 Trip spans 7 days
US Airways
US Airways
IAD
1:20a
SEA
9:07a
7h 47m
1 stop
SEA
6:15p
IAD
3:33a
9h 18m
1 stop
Depart: Sat Sep 26 2015 Return: Wed Sep 30 2015 Trip spans 5 days
US Airways
US Airways
IAD
1:20a
SEA
9:07a
7h 47m
1 stop
SEA
9:20a
IAD
4:24p
7h 04m
1 stop
Depart: Tue Sep 29 2015 Return: Tue Oct 6 2015 Trip spans 8 days
US Airways
US Airways
IAD
1:20a
SEA
9:07a
7h 47m
1 stop
SEA
9:20a
IAD
4:24p
7h 04m
1 stop
Depart: Wed Sep 30 2015 Return: Tue Oct 6 2015 Trip spans 7 days
American Airlines
American Airlines
IAD
3:00a
SEA
11:16a
8h 16m
1 stop
SEA
6:15p
IAD
1:46a
7h 31m
1 stop
Depart: Sat Oct 3 2015 Return: Tue Oct 13 2015 Trip spans 11 days
American Airlines
American Airlines
IAD
1:20a
SEA
9:07a
7h 47m
1 stop
SEA
9:20a
IAD
4:24p
7h 04m
1 stop
Depart: Tue Oct 6 2015 Return: Tue Oct 13 2015 Trip spans 8 days
US Airways
US Airways
IAD
3:00a
SEA
11:16a
8h 16m
1 stop
SEA
9:20a
IAD
4:24p
7h 04m
1 stop
Depart: Wed Oct 7 2015 Return: Tue Oct 13 2015 Trip spans 7 days
US Airways
US Airways
IAD
3:00a
SEA
11:16a
8h 16m
1 stop
SEA
9:20a
IAD
4:24p
7h 04m
1 stop
Depart: Tue Aug 18 2015 Return: Wed Sep 2 2015 Trip spans 16 days
Virgin America
Virgin America
IAD
6:15a
SEA
3:15p
9h 00m
1 stop
SEA
3:15p
IAD
11:05p
7h 50m
1 stop
Depart: Sat Aug 22 2015 Return: Wed Aug 26 2015 Trip spans 5 days
Delta
Delta
IAD
3:05p
SEA
10:05p
7h 00m
1 stop
SEA
8:55p
IAD
5:24a
8h 29m
1 stop
Depart: Sat Oct 31 2015 Return: Mon Nov 2 2015 Trip spans 3 days
JetBlue Airways
JetBlue Airways
IAD
9:35a
SEA
9:46p
12h 11m
1 stop
SEA
5:00p
IAD
3:57a
10h 57m
1 stop
Depart: Sat Nov 7 2015 Return: Wed Nov 11 2015 Trip spans 5 days
Alaska Airlines
Alaska Airlines
IAD
1:50p
SEA
7:55p
6h 05m
nonstop
SEA
4:50a
IAD
9:50a
5h 00m
nonstop
Depart: Fri Nov 27 2015 Return: Tue Dec 1 2015 Trip spans 5 days
United
United
IAD
7:30a
SEA
1:09p
5h 39m
nonstop
SEA
3:05a
IAD
7:55a
4h 50m
nonstop
Direct flights IAD to SEA on United
Flight # Depart IAD Arrive SEA Sun Mon Tue Wed Thu Fri Sat Valid Between
1246 8:15 am 11:00 am Aug 5 - Aug 7
1246 8:15 am 11:00 am Jul 26 - Aug 16
1246 8:15 am 11:00 am Jul 19 - Jul 19
1674 8:15 am 11:00 am Jul 11 - Jul 11
816 8:15 am 10:58 am Jul 7 - Aug 6
816 8:15 am 10:58 am Jul 8 - Jul 29
1674 8:19 am 11:04 am Jul 18 - Jul 18
1246 8:25 am 11:10 am Jul 12 - Jul 12
314 8:25 am 11:08 am Jul 25 - Aug 15
349 12:30 pm 3:13 pm Aug 2 - Aug 2
349 12:30 pm 3:31 pm Jul 12 - Jul 12
349 12:30 pm 3:13 pm Jul 19 - Jul 19
349 12:35 pm 3:18 pm Jul 26 - Jul 26
349 12:39 pm 3:22 pm Aug 9 - Aug 9
1043 2:22 pm 5:07 pm Aug 6 - Aug 6
349 2:22 pm 5:05 pm Jul 8 - Jul 29
349 2:22 pm 5:05 pm Jul 6 - Jul 24
349 2:22 pm 5:05 pm Jul 7 - Jul 28
349 2:22 pm 5:05 pm Aug 7 - Aug 14
349 2:22 pm 5:05 pm Jul 30 - Aug 3
349 2:22 pm 5:05 pm Jul 27 - Jul 27
349 2:22 pm 5:05 pm Aug 5 - Aug 5
349 2:22 pm 5:05 pm Aug 4 - Aug 4
1498 3:58 pm 6:43 pm Aug 1 - Aug 1
1498 4:01 pm 6:46 pm Aug 8 - Aug 8
1498 4:01 pm 6:46 pm Jul 11 - Jul 18
1498 4:08 pm 6:48 pm Jul 25 - Jul 25
1637 5:35 pm 8:15 pm Jul 18 - Jul 18
1637 5:35 pm 8:15 pm Jul 10 - Jul 10
1637 5:35 pm 8:15 pm Aug 9 - Aug 9
1637 5:35 pm 8:15 pm Jul 2 - Jul 9
1637 5:35 pm 8:15 pm Jul 31 - Jul 31
1637 5:35 pm 8:15 pm Jul 30 - Jul 30
1637 5:35 pm 8:15 pm Aug 1 - Aug 1
1637 5:35 pm 8:15 pm Aug 2 - Aug 2
1637 5:35 pm 8:15 pm Aug 3 - Aug 3
1637 5:35 pm 8:15 pm Aug 5 - Aug 5
1637 5:35 pm 8:15 pm Aug 6 - Aug 6
1637 5:35 pm 8:15 pm Aug 7 - Aug 10
1637 5:35 pm 8:15 pm Jul 27 - Jul 27
1637 5:35 pm 8:15 pm Jul 23 - Jul 23
1637 5:35 pm 8:15 pm Jul 25 - Jul 25
1637 5:35 pm 8:15 pm Jul 8 - Jul 29
1637 5:35 pm 8:15 pm Jul 7 - Jul 28
1637 5:35 pm 8:15 pm Jul 11 - Jul 11
1637 5:35 pm 8:15 pm Jul 13 - Jul 16
1637 5:35 pm 8:15 pm Jul 12 - Jul 12
1637 5:35 pm 8:15 pm Jul 17 - Jul 17
1637 5:35 pm 8:15 pm Jul 19 - Jul 26
1637 5:35 pm 8:15 pm Jul 20 - Jul 24
1637 5:35 pm 8:15 pm Aug 8 - Aug 8
1637 5:39 pm 8:19 pm Aug 4 - Aug 4
Airports
Origin

Washington
$297
Destination

Seattle
$297