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Find Flight Deals 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 May 13 2015 Return: Wed May 27 2015 Trip spans 15 days
American Airlines
American Airlines
IAD
1:20a
SEA
9:08a
7h 48m
1 stop
SEA
6:05p
IAD
1:46a
7h 41m
1 stop
Depart: Fri Aug 21 2015 Return: Tue Sep 1 2015 Trip spans 12 days
US Airways
US Airways
IAD
1:58p
SEA
9:52p
7h 54m
1 stop
SEA
8:20p
IAD
3:30a
7h 10m
1 stop
Depart: Wed Aug 19 2015 Return: Tue Aug 25 2015 Trip spans 7 days
American Airlines
American Airlines
IAD
12:15p
SEA
7:51p
7h 36m
1 stop
SEA
8:20p
IAD
6:01a
9h 41m
1 stop
Depart: Sat Aug 22 2015 Return: Mon Aug 24 2015 Trip spans 3 days
American Airlines
American Airlines
IAD
12:15p
SEA
7:51p
7h 36m
1 stop
SEA
8:20p
IAD
3:30a
7h 10m
1 stop
Depart: Mon Aug 24 2015 Return: Tue Sep 1 2015 Trip spans 9 days
US Airways
US Airways
IAD
1:20a
SEA
8:55a
7h 35m
1 stop
SEA
8:20p
IAD
3:30a
7h 10m
1 stop
Depart: Tue Aug 25 2015 Return: Tue Sep 1 2015 Trip spans 8 days
US Airways
US Airways
IAD
1:20a
SEA
8:55a
7h 35m
1 stop
SEA
8:20p
IAD
3:30a
7h 10m
1 stop
Depart: Wed Aug 26 2015 Return: Tue Sep 1 2015 Trip spans 7 days
US Airways
US Airways
IAD
1:20a
SEA
8:55a
7h 35m
1 stop
SEA
8:20p
IAD
3:30a
7h 10m
1 stop
Depart: Sat Aug 29 2015 Return: Tue Sep 1 2015 Trip spans 4 days
US Airways
US Airways
IAD
1:20a
SEA
8:55a
7h 35m
1 stop
SEA
8:20p
IAD
3:30a
7h 10m
1 stop
Depart: Mon Jun 8 2015 Return: Tue Jun 9 2015 Trip spans 2 days
US Airways
US Airways
IAD
3:50p
SEA
11:40p
7h 50m
1 stop
SEA
8:25p
IAD
3:37a
7h 12m
1 stop
Depart: Thu Aug 20 2015 Return: Wed Aug 26 2015 Trip spans 7 days
US Airways
US Airways
IAD
12:15p
SEA
9:52p
9h 37m
1 stop
SEA
8:20p
IAD
3:30a
7h 10m
1 stop
Depart: Tue Jun 2 2015 Return: Fri Jun 5 2015 Trip spans 4 days
American Airlines
American Airlines
IAD
3:50a
SEA
1:38p
9h 48m
1 stop
SEA
8:25p
IAD
3:37a
7h 12m
1 stop
Depart: Wed Jun 3 2015 Return: Fri Jun 5 2015 Trip spans 3 days
American Airlines
American Airlines
IAD
3:50a
SEA
1:38p
9h 48m
1 stop
SEA
8:25p
IAD
6:04a
9h 39m
1 stop
Depart: Fri Aug 28 2015 Return: Tue Sep 1 2015 Trip spans 5 days
US Airways
US Airways
IAD
1:20a
SEA
8:55a
7h 35m
1 stop
SEA
8:20p
IAD
3:30a
7h 10m
1 stop
Depart: Thu Aug 6 2015 Return: Wed Aug 26 2015 Trip spans 21 days
American Airlines
American Airlines
IAD
3:50p
SEA
11:40p
7h 50m
1 stop
SEA
8:20p
IAD
3:30a
7h 10m
1 stop
Depart: Thu Sep 10 2015 Return: Sat Sep 19 2015 Trip spans 10 days
Virgin America
Virgin America
IAD
5:00a
SEA
3:55p
10h 55m
1 stop
SEA
3:00a
IAD
11:35a
8h 35m
1 stop
Depart: Mon Sep 14 2015 Return: Sat Sep 19 2015 Trip spans 6 days
Virgin America
Virgin America
IAD
5:00a
SEA
3:55p
10h 55m
1 stop
SEA
3:00a
IAD
11:35a
8h 35m
1 stop
Depart: Tue May 12 2015 Return: Fri May 29 2015 Trip spans 18 days
Alaska Airlines
Alaska Airlines
IAD
2:20p
SEA
8:15p
5h 55m
nonstop
SEA
5:20a
IAD
10:20a
5h 00m
nonstop
Depart: Fri May 15 2015 Return: Sat May 16 2015 Trip spans 2 days
United
United
IAD
4:25a
SEA
10:10a
5h 45m
nonstop
SEA
5:48p
IAD
10:51p
5h 03m
nonstop
Depart: Tue Sep 8 2015 Return: Mon Sep 14 2015 Trip spans 7 days
JetBlue Airways
JetBlue Airways
IAD
2:55a
SEA
11:22a
8h 27m
1 stop
SEA
7:14p
IAD
3:04a
7h 50m
1 stop
Depart: Mon May 4 2015 Return: Mon May 18 2015 Trip spans 15 days
Delta
Delta
IAD
1:56p
SEA
10:00p
8h 04m
1 stop
SEA
6:35p
IAD
2:08a
7h 33m
1 stop
Direct flights IAD to SEA on United
Flight # Depart IAD Arrive SEA Sun Mon Tue Wed Thu Fri Sat Valid Between
1043 8:15 am 11:05 am May 5 - May 5
1282 8:15 am 11:00 am May 31 - May 31
1282 8:15 am 11:00 am May 24 - May 24
1282 8:15 am 11:00 am May 10 - May 10
1282 8:15 am 11:00 am May 17 - May 17
939 8:15 am 11:03 am May 1 - May 4
1282 8:25 am 11:10 am May 26 - May 26
1282 8:25 am 11:10 am May 20 - Jun 3
1282 8:25 am 11:10 am May 28 - May 28
1282 8:25 am 11:10 am Jun 2 - Jun 2
1282 8:25 am 11:10 am May 21 - May 21
1282 8:25 am 11:10 am May 13 - May 13
1282 8:25 am 11:10 am May 11 - Jun 1
1282 8:25 am 11:10 am May 12 - May 12
1282 8:25 am 11:10 am May 14 - May 14
1282 8:25 am 11:10 am May 19 - May 19
1282 8:25 am 11:10 am May 7 - May 7
1282 8:25 am 11:10 am May 8 - May 29
1282 8:25 am 11:10 am May 6 - May 6
1717 12:30 pm 3:20 pm May 5 - May 5
357 12:30 pm 3:18 pm Apr 9 - May 4
357 12:35 pm 3:23 pm May 3 - May 3
1653 12:43 pm 3:30 pm May 13 - May 20
1653 12:43 pm 3:30 pm May 27 - Jun 3
1653 12:43 pm 3:30 pm May 6 - May 6
1717 12:43 pm 3:30 pm Jun 2 - Jun 2
1717 12:43 pm 3:30 pm May 8 - May 29
1717 12:43 pm 3:30 pm May 14 - May 14
1717 12:43 pm 3:30 pm May 12 - May 19
1717 12:43 pm 3:30 pm May 28 - Jun 1
1717 12:43 pm 3:30 pm May 11 - May 25
1717 12:43 pm 3:30 pm May 7 - May 7
1717 12:43 pm 3:30 pm May 26 - May 26
1717 12:43 pm 3:30 pm May 21 - May 21
1085 12:45 pm 3:32 pm May 24 - May 24
357 12:45 pm 3:30 pm May 17 - May 17
357 12:45 pm 3:30 pm May 31 - May 31
357 12:45 pm 3:30 pm May 10 - May 10
1143 5:20 pm 8:10 pm May 6 - May 21
1143 5:20 pm 8:10 pm May 26 - Jun 2
1143 5:20 pm 8:10 pm May 11 - May 18
1143 5:20 pm 8:10 pm May 22 - Jun 1
1143 5:20 pm 8:10 pm May 27 - May 27
1261 5:25 pm 8:15 pm May 2 - May 2
643 5:25 pm 8:13 pm May 5 - May 5
643 5:25 pm 8:10 pm Apr 24 - May 4
1143 5:30 pm 8:20 pm May 9 - May 9
1253 5:30 pm 8:20 pm May 3 - May 3
1143 5:34 pm 8:24 pm May 16 - May 30
1143 6:00 pm 8:50 pm May 10 - May 31
Airports
Origin

Washington
$257
Destination

Seattle
$257