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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: Sat Sep 19 2015 Return: Tue Sep 29 2015 Trip spans 11 days
US Airways
US Airways
IAD
1:20a
SEA
11:02a
9h 42m
1 stop
SEA
6:10p
IAD
1:50a
7h 40m
1 stop
Depart: Sat Sep 26 2015 Return: Tue Sep 29 2015 Trip spans 4 days
American Airlines
American Airlines
IAD
1:20a
SEA
8:55a
7h 35m
1 stop
SEA
6:10p
IAD
3:30a
9h 20m
1 stop
Depart: Tue Sep 22 2015 Return: Tue Sep 29 2015 Trip spans 8 days
US Airways
US Airways
IAD
1:20a
SEA
11:02a
9h 42m
1 stop
SEA
6:10p
IAD
1:50a
7h 40m
1 stop
Depart: Wed Sep 23 2015 Return: Tue Sep 29 2015 Trip spans 7 days
US Airways
US Airways
IAD
1:20a
SEA
11:02a
9h 42m
1 stop
SEA
6:10p
IAD
1:50a
7h 40m
1 stop
Depart: Tue Sep 29 2015 Return: Tue Oct 6 2015 Trip spans 8 days
American Airlines
American Airlines
IAD
1:20a
SEA
8:55a
7h 35m
1 stop
SEA
6:10p
IAD
3:30a
9h 20m
1 stop
Depart: Wed Sep 30 2015 Return: Tue Oct 6 2015 Trip spans 7 days
American Airlines
American Airlines
IAD
1:20a
SEA
11:02a
9h 42m
1 stop
SEA
6:10p
IAD
1:50a
7h 40m
1 stop
Depart: Sat Oct 3 2015 Return: Tue Oct 6 2015 Trip spans 4 days
American Airlines
American Airlines
IAD
1:20a
SEA
11:02a
9h 42m
1 stop
SEA
6:10p
IAD
3:30a
9h 20m
1 stop
Depart: Tue Sep 15 2015 Return: Sat Sep 26 2015 Trip spans 12 days
American Airlines
American Airlines
IAD
1:20a
SEA
11:02a
9h 42m
1 stop
SEA
1:10a
IAD
10:39a
9h 29m
1 stop
Depart: Tue Oct 13 2015 Return: Sat Oct 17 2015 Trip spans 5 days
American Airlines
American Airlines
IAD
1:20a
SEA
11:02a
9h 42m
1 stop
SEA
1:10a
IAD
10:39a
9h 29m
1 stop
Depart: Sat Oct 17 2015 Return: Sat Oct 24 2015 Trip spans 8 days
American Airlines
American Airlines
IAD
1:20a
SEA
11:02a
9h 42m
1 stop
SEA
1:10a
IAD
10:39a
9h 29m
1 stop
Depart: Sat Oct 24 2015 Return: Sat Oct 31 2015 Trip spans 8 days
American Airlines
American Airlines
IAD
1:20a
SEA
11:02a
9h 42m
1 stop
SEA
1:10a
IAD
10:39a
9h 29m
1 stop
Depart: Wed Nov 11 2015 Return: Sat Nov 14 2015 Trip spans 4 days
American Airlines
American Airlines
IAD
12:20a
SEA
10:02a
9h 42m
1 stop
SEA
12:10a
IAD
9:11a
9h 01m
1 stop
Depart: Sat Sep 12 2015 Return: Mon Sep 21 2015 Trip spans 10 days
American Airlines
American Airlines
IAD
1:20a
SEA
8:55a
7h 35m
1 stop
SEA
6:10p
IAD
1:50a
7h 40m
1 stop
Depart: Sun Sep 13 2015 Return: Tue Sep 22 2015 Trip spans 10 days
American Airlines
American Airlines
IAD
1:20a
SEA
8:55a
7h 35m
1 stop
SEA
6:10p
IAD
1:50a
7h 40m
1 stop
Depart: Sun Sep 20 2015 Return: Tue Sep 29 2015 Trip spans 10 days
US Airways
US Airways
IAD
1:20a
SEA
8:55a
7h 35m
1 stop
SEA
6:10p
IAD
1:50a
7h 40m
1 stop
Depart: Fri Oct 9 2015 Return: Wed Oct 14 2015 Trip spans 6 days
Virgin America
Virgin America
IAD
6:00a
SEA
5:50p
11h 50m
1 stop
SEA
1:50p
IAD
12:45a
10h 55m
1 stop
Depart: Wed Sep 16 2015 Return: Mon Sep 21 2015 Trip spans 6 days
JetBlue Airways
JetBlue Airways
IAD
2:55a
SEA
11:22a
8h 27m
1 stop
SEA
6:00p
IAD
2:09a
8h 09m
1 stop
Depart: Sat Jul 11 2015 Return: Tue Jul 14 2015 Trip spans 4 days
United
United
IAD
12:01p
SEA
5:46p
5h 45m
nonstop
SEA
4:10a
IAD
9:13a
5h 03m
nonstop
Depart: Sun Nov 22 2015 Return: Sat Nov 28 2015 Trip spans 7 days
Alaska Airlines
Alaska Airlines
IAD
1:30p
SEA
7:25p
5h 55m
nonstop
SEA
4:30a
IAD
9:30a
5h 00m
nonstop
Depart: Thu Jun 4 2015 Return: Tue Jul 7 2015 Trip spans 34 days
Delta
Delta
IAD
2:00a
SEA
9:20a
7h 20m
1 stop
SEA
8:55p
IAD
5:24a
8h 29m
1 stop
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 10:55 am Jun 26 - Jun 26
1246 8:15 am 11:00 am Jul 3 - Jul 3
1246 8:15 am 11:00 am Jul 5 - Jul 5
282 8:15 am 10:58 am Jul 2 - Jul 2
816 8:15 am 10:58 am Jul 7 - Aug 6
816 8:15 am 10:58 am Jul 6 - Jul 6
1246 8:20 am 11:00 am Jun 18 - Jun 18
1246 8:20 am 11:00 am Jun 19 - Jun 22
1246 8:20 am 11:00 am Jun 24 - Jun 24
1246 8:20 am 11:00 am Jun 23 - Jun 23
1246 8:20 am 11:00 am Jun 25 - Jun 25
1246 8:20 am 11:00 am Jun 30 - Jun 30
1246 8:20 am 11:00 am Jun 29 - Jun 29
1246 8:20 am 11:00 am Jun 16 - Jun 16
1246 8:20 am 11:00 am Jun 11 - Jun 11
1246 8:20 am 11:00 am Jun 9 - Jun 12
1246 8:20 am 11:00 am Jun 17 - Jun 17
1246 8:20 am 11:00 am Jun 5 - Jun 10
1246 8:20 am 11:00 am Jun 8 - Jun 8
1246 8:20 am 11:00 am Jun 15 - Jun 15
1246 8:20 am 11:00 am Jul 1 - Jul 1
541 8:20 am 10:58 am Jun 7 - Jun 21
541 8:37 am 11:15 am Jun 28 - Jun 28
349 12:30 pm 3:13 pm Jul 5 - Jul 5
357 12:30 pm 3:11 pm Jun 13 - Jun 20
357 12:30 pm 3:11 pm Jun 27 - Jun 27
357 12:30 pm 3:11 pm Jun 6 - Jun 6
357 12:45 pm 3:26 pm Jun 7 - Jun 28
349 2:22 pm 5:05 pm Jul 7 - Jul 28
349 2:22 pm 5:05 pm Jul 2 - Jul 9
357 2:23 pm 5:04 pm Jun 30 - Jun 30
357 2:24 pm 5:05 pm Jun 17 - Jun 23
357 2:24 pm 5:05 pm Jun 19 - Jun 19
357 2:24 pm 5:05 pm Jun 22 - Jun 29
357 2:24 pm 5:05 pm Jun 26 - Jun 26
357 2:24 pm 5:05 pm Jun 9 - Jun 18
357 2:24 pm 5:05 pm Jul 1 - Jul 1
357 2:24 pm 5:05 pm Jun 8 - Jun 8
357 2:24 pm 5:05 pm Jun 10 - Jun 10
1043 4:00 pm 6:43 pm Jun 13 - Jun 27
1610 4:00 pm 6:43 pm Jun 6 - Jun 6
1043 5:20 pm 8:13 pm Jun 19 - Jun 19
1043 5:30 pm 8:23 pm Jun 10 - Jun 15
1043 5:30 pm 8:23 pm Jun 12 - Jun 12
1043 5:30 pm 8:23 pm Jun 17 - Jun 17
1043 5:30 pm 8:23 pm Jun 18 - Jun 18
1043 5:30 pm 8:23 pm Jun 30 - Jun 30
1043 5:30 pm 8:23 pm Jun 28 - Jun 28
1043 5:30 pm 8:23 pm Jun 9 - Jun 16
1043 5:30 pm 8:23 pm Jun 8 - Jun 8
1043 5:30 pm 8:23 pm Jun 7 - Jun 14
1043 5:30 pm 8:23 pm Jun 21 - Jun 21
1043 5:30 pm 8:23 pm Jun 22 - Jun 26
1043 5:30 pm 8:23 pm Jun 23 - Jun 23
1043 5:30 pm 8:23 pm Jul 1 - Jul 1
1043 5:30 pm 8:23 pm Jun 29 - Jun 29
1637 5:35 pm 8:15 pm Jul 2 - Jul 2
1637 5:35 pm 8:15 pm Jul 3 - Jul 3
1637 5:35 pm 8:15 pm Jul 7 - Jul 28
1637 5:35 pm 8:15 pm Jul 6 - Jul 6
1637 5:35 pm 8:15 pm Jul 5 - Jul 5
1637 5:35 pm 8:15 pm Jul 4 - Jul 4
1043 5:50 pm 8:43 pm Jun 6 - Jun 6
1610 5:50 pm 8:43 pm Jun 20 - Jun 27
1610 5:50 pm 8:43 pm Jun 13 - Jun 13
Airports
Origin

Washington
$297
Destination

Seattle
$297