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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 Mar 18 2015 Return: Wed Apr 8 2015 Trip spans 22 days
American Airlines
American Airlines
IAD
1:25a
SEA
9:24a
7h 59m
1 stop
SEA
6:05p
IAD
1:46a
7h 41m
1 stop
Depart: Tue Mar 24 2015 Return: Wed Mar 25 2015 Trip spans 2 days
US Airways
US Airways
IAD
1:25a
SEA
9:24a
7h 59m
1 stop
SEA
7:25a
IAD
2:23p
6h 58m
1 stop
Depart: Thu May 7 2015 Return: Mon May 11 2015 Trip spans 5 days
Multiple Airlines
Multiple Airlines
IAD
1:20a
SEA
9:08a
7h 48m
1 stop
SEA
6:05p
IAD
1:46a
7h 41m
1 stop
Depart: Wed Mar 25 2015 Return: Wed Apr 8 2015 Trip spans 15 days
US Airways
US Airways
IAD
1:25a
SEA
9:24a
7h 59m
1 stop
SEA
7:10a
IAD
2:09p
6h 59m
1 stop
Depart: Tue Apr 7 2015 Return: Wed Apr 8 2015 Trip spans 2 days
US Airways
US Airways
IAD
1:20a
SEA
9:08a
7h 48m
1 stop
SEA
7:10a
IAD
2:09p
6h 59m
1 stop
Depart: Wed Apr 8 2015 Return: Wed Apr 15 2015 Trip spans 8 days
American Airlines
American Airlines
IAD
1:20a
SEA
9:08a
7h 48m
1 stop
SEA
7:10a
IAD
2:09p
6h 59m
1 stop
Depart: Thu Apr 9 2015 Return: Mon Apr 13 2015 Trip spans 5 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: Tue Apr 14 2015 Return: Tue Apr 28 2015 Trip spans 15 days
US Airways
US Airways
IAD
1:20a
SEA
9:08a
7h 48m
1 stop
SEA
7:10a
IAD
2:09p
6h 59m
1 stop
Depart: Wed Apr 15 2015 Return: Mon Apr 20 2015 Trip spans 6 days
American Airlines
American Airlines
IAD
1:20a
SEA
9:08a
7h 48m
1 stop
SEA
6:05p
IAD
3:29a
9h 24m
1 stop
Depart: Thu Apr 16 2015 Return: Mon Apr 20 2015 Trip spans 5 days
American Airlines
American Airlines
IAD
1:20a
SEA
9:08a
7h 48m
1 stop
SEA
6:05p
IAD
3:29a
9h 24m
1 stop
Depart: Tue Apr 21 2015 Return: Tue Apr 28 2015 Trip spans 8 days
American Airlines
American Airlines
IAD
9:40a
SEA
7:49p
10h 09m
1 stop
SEA
6:05p
IAD
3:29a
9h 24m
1 stop
Depart: Wed Apr 22 2015 Return: Mon Apr 27 2015 Trip spans 6 days
American Airlines
American Airlines
IAD
9:40a
SEA
7:49p
10h 09m
1 stop
SEA
6:05p
IAD
3:29a
9h 24m
1 stop
Depart: Thu Apr 23 2015 Return: Mon Apr 27 2015 Trip spans 5 days
American Airlines
American Airlines
IAD
9:40a
SEA
7:49p
10h 09m
1 stop
SEA
6:05p
IAD
1:46a
7h 41m
1 stop
Depart: Fri Apr 24 2015 Return: Mon Apr 27 2015 Trip spans 4 days
American Airlines
American Airlines
IAD
1:20a
SEA
9:08a
7h 48m
1 stop
SEA
6:05p
IAD
3:29a
9h 24m
1 stop
Depart: Sat Apr 25 2015 Return: Mon Apr 27 2015 Trip spans 3 days
US Airways
US Airways
IAD
1:20a
SEA
9:08a
7h 48m
1 stop
SEA
6:05p
IAD
1:46a
7h 41m
1 stop
Depart: Sat Mar 14 2015 Return: Tue Mar 17 2015 Trip spans 4 days
United
United
IAD
4:00p
SEA
9:56p
5h 56m
nonstop
SEA
6:35p
IAD
11:31p
4h 56m
nonstop
Depart: Sat Mar 21 2015 Return: Wed Mar 25 2015 Trip spans 5 days
Alaska Airlines
Alaska Airlines
IAD
2:20p
SEA
8:15p
5h 55m
nonstop
SEA
5:20a
IAD
10:20a
5h 00m
nonstop
Depart: Wed Jun 3 2015 Return: Thu Jun 4 2015 Trip spans 2 days
Virgin America
Virgin America
IAD
5:00a
SEA
3:55p
10h 55m
1 stop
SEA
1:40p
IAD
12:50a
11h 10m
1 stop
Depart: Thu Mar 5 2015 Return: Mon Mar 16 2015 Trip spans 11 days
Delta
Delta
IAD
8:04a
SEA
5:00p
8h 56m
1 stop
SEA
8:40p
IAD
5:29a
8h 49m
1 stop
Depart: Sun Jun 7 2015 Return: Mon Jun 8 2015 Trip spans 2 days
JetBlue Airways
JetBlue Airways
IAD
3:23a
SEA
11:41a
8h 18m
1 stop
SEA
6:50p
IAD
3:58a
9h 08m
1 stop
Change your search
Direct flights IAD to SEA on United
Flight # Depart IAD Arrive SEA Sun Mon Tue Wed Thu Fri Sat Valid Between
1186 8:15 am 11:02 am Mar 13 - Mar 20
1246 8:15 am 11:02 am Apr 3 - Apr 3
1258 8:15 am 11:02 am Mar 27 - Mar 27
1552 8:15 am 11:02 am Apr 6 - Apr 6
1646 8:15 am 11:02 am Mar 11 - Mar 11
1730 8:15 am 11:02 am Mar 26 - Apr 2
1731 8:15 am 11:02 am Mar 25 - Mar 25
1740 8:15 am 11:02 am Apr 1 - Apr 1
1740 8:15 am 11:02 am Mar 30 - Mar 30
1740 8:15 am 11:02 am Mar 31 - Mar 31
1740 8:15 am 11:02 am Mar 18 - Mar 18
1740 8:15 am 11:02 am Mar 9 - Mar 9
1740 8:15 am 11:02 am Mar 12 - Mar 12
1740 8:15 am 11:02 am Mar 17 - Mar 17
1740 8:15 am 11:02 am Mar 16 - Mar 23
205 8:15 am 11:00 am Mar 10 - Mar 10
205 8:15 am 11:00 am Mar 24 - Mar 24
348 8:15 am 11:03 am Apr 7 - May 5
357 12:30 pm 3:15 pm Mar 26 - Apr 2
357 12:30 pm 3:18 pm Apr 8 - Apr 8
357 12:36 pm 3:21 pm Mar 17 - Mar 23
357 12:36 pm 3:21 pm Mar 10 - Mar 11
357 12:36 pm 3:21 pm Apr 3 - Apr 6
357 12:36 pm 3:21 pm Mar 9 - Mar 16
357 12:36 pm 3:17 pm Mar 27 - Mar 27
357 12:36 pm 3:21 pm Mar 30 - Apr 1
357 12:36 pm 3:21 pm Mar 18 - Mar 31
1253 5:25 pm 8:15 pm Apr 8 - Apr 15
643 5:41 pm 8:26 pm Apr 7 - Apr 7
1646 6:56 pm 9:52 pm Mar 31 - Mar 31
1646 6:56 pm 9:52 pm Mar 9 - Mar 27
1646 6:56 pm 9:52 pm Mar 30 - Apr 2
1646 6:56 pm 9:52 pm Apr 3 - Apr 3
1646 6:56 pm 9:52 pm Mar 12 - Mar 26
1646 6:56 pm 9:52 pm Mar 8 - Mar 15
1646 6:56 pm 9:52 pm Mar 10 - Mar 24
1740 6:56 pm 9:52 pm Mar 22 - Mar 22
1740 6:56 pm 9:52 pm Mar 29 - Mar 29
1740 6:56 pm 9:52 pm Apr 5 - Apr 5
1646 6:57 pm 9:53 pm Apr 1 - Apr 1
1646 6:57 pm 9:53 pm Mar 18 - Mar 25
1740 6:57 pm 9:53 pm Mar 11 - Mar 11
1646 7:21 pm 10:17 pm Apr 6 - Apr 6
1134 8:00 pm 10:56 pm Mar 21 - Mar 21
1417 8:00 pm 10:56 pm Apr 4 - Apr 4
1747 8:00 pm 10:56 pm Mar 14 - Mar 14
357 8:00 pm 10:54 pm Mar 28 - Mar 28
Airports
Origin

Washington
$257
Destination

Seattle
$257