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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: Sun Feb 15 2015 Return: Tue Feb 17 2015 Trip spans 3 days
US Airways
US Airways
IAD
8:40a
SEA
7:00p
10h 20m
1 stop
SEA
5:20p
IAD
2:27a
9h 07m
1 stop
Depart: Tue Feb 17 2015 Return: Wed Feb 18 2015 Trip spans 2 days
American Airlines
American Airlines
IAD
8:40a
SEA
7:00p
10h 20m
1 stop
SEA
5:20p
IAD
2:27a
9h 07m
1 stop
Depart: Wed Feb 18 2015 Return: Sat Feb 21 2015 Trip spans 4 days
American Airlines
American Airlines
IAD
2:00a
SEA
10:22a
8h 22m
1 stop
SEA
6:15a
IAD
1:07p
6h 52m
1 stop
Depart: Thu Feb 19 2015 Return: Fri Feb 20 2015 Trip spans 2 days
American Airlines
American Airlines
IAD
12:20a
SEA
10:22a
10h 02m
1 stop
SEA
5:20p
IAD
12:45a
7h 25m
1 stop
Depart: Fri Feb 20 2015 Return: Mon Feb 23 2015 Trip spans 4 days
American Airlines
American Airlines
IAD
12:20a
SEA
10:22a
10h 02m
1 stop
SEA
5:20p
IAD
12:45a
7h 25m
1 stop
Depart: Tue Feb 24 2015 Return: Wed Feb 25 2015 Trip spans 2 days
US Airways
US Airways
IAD
2:00a
SEA
10:22a
8h 22m
1 stop
SEA
8:25a
IAD
3:24p
6h 59m
1 stop
Depart: Wed Feb 25 2015 Return: Thu Feb 26 2015 Trip spans 2 days
US Airways
US Airways
IAD
2:00a
SEA
10:22a
8h 22m
1 stop
SEA
8:25a
IAD
3:24p
6h 59m
1 stop
Depart: Thu Feb 26 2015 Return: Sat Feb 28 2015 Trip spans 3 days
US Airways
US Airways
IAD
12:20a
SEA
10:22a
10h 02m
1 stop
SEA
6:15a
IAD
1:07p
6h 52m
1 stop
Depart: Fri Feb 27 2015 Return: Mon Mar 2 2015 Trip spans 4 days
American Airlines
American Airlines
IAD
12:20a
SEA
10:22a
10h 02m
1 stop
SEA
5:20p
IAD
2:27a
9h 07m
1 stop
Depart: Mon Mar 2 2015 Return: Wed Mar 4 2015 Trip spans 3 days
US Airways
US Airways
IAD
12:20a
SEA
10:22a
10h 02m
1 stop
SEA
8:25a
IAD
3:24p
6h 59m
1 stop
Depart: Tue Mar 3 2015 Return: Wed Mar 4 2015 Trip spans 2 days
American Airlines
American Airlines
IAD
2:00a
SEA
10:22a
8h 22m
1 stop
SEA
5:20p
IAD
2:27a
9h 07m
1 stop
Depart: Wed Mar 4 2015 Return: Wed Mar 11 2015 Trip spans 7 days
American Airlines
American Airlines
IAD
12:20a
SEA
10:22a
10h 02m
1 stop
SEA
6:20p
IAD
3:27a
9h 07m
1 stop
Depart: Tue Mar 10 2015 Return: Wed Mar 11 2015 Trip spans 2 days
American Airlines
American Airlines
IAD
9:40a
SEA
8:00p
10h 20m
1 stop
SEA
6:20p
IAD
3:27a
9h 07m
1 stop
Depart: Wed Mar 11 2015 Return: Tue Mar 24 2015 Trip spans 14 days
US Airways
US Airways
IAD
1:20a
SEA
9:24a
8h 04m
1 stop
SEA
7:25a
IAD
2:07p
6h 42m
1 stop
Depart: Wed May 6 2015 Return: Mon May 11 2015 Trip spans 6 days
Multiple Airlines
Multiple Airlines
IAD
6:15a
SEA
3:15p
9h 00m
1 stop
SEA
6:10p
IAD
1:50a
7h 40m
1 stop
Depart: Wed May 13 2015 Return: Wed May 20 2015 Trip spans 8 days
Virgin America
Virgin America
IAD
5:00a
SEA
3:55p
10h 55m
1 stop
SEA
1:40p
IAD
12:45a
11h 05m
1 stop
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: Fri Apr 3 2015 Return: Mon Apr 6 2015 Trip spans 4 days
United
United
IAD
4:15a
SEA
10:02a
5h 47m
nonstop
SEA
6:35p
IAD
11:31p
4h 56m
nonstop
Depart: Sun Feb 1 2015 Return: Sat Feb 14 2015 Trip spans 14 days
Delta
Delta
IAD
10:50a
SEA
7:42p
8h 52m
1 stop
SEA
1:45a
IAD
10:47a
9h 02m
1 stop
Depart: Fri Jun 5 2015 Return: Mon Jun 8 2015 Trip spans 4 days
JetBlue Airways
JetBlue Airways
IAD
7:34a
SEA
6:28p
10h 54m
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
1715 8:15 am 11:02 am Mar 6 - Mar 6
1740 8:15 am 11:02 am Mar 9 - Mar 9
1740 8:15 am 11:02 am Mar 5 - Mar 5
205 8:15 am 11:00 am Mar 10 - Mar 10
357 12:30 pm 3:15 pm Mar 5 - Mar 5
357 12:36 pm 3:21 pm Mar 9 - Mar 16
357 12:36 pm 3:21 pm Mar 6 - Mar 6
357 12:36 pm 3:21 pm Mar 10 - Mar 11
1615 5:56 pm 8:53 pm Feb 10 - Feb 10
1615 5:56 pm 8:53 pm Feb 9 - Feb 9
1615 5:57 pm 8:54 pm Feb 11 - Feb 11
1646 6:00 pm 8:57 pm Feb 8 - Feb 8
1259 6:40 pm 9:30 pm Feb 15 - Mar 1
1544 6:47 pm 9:37 pm Feb 24 - Feb 24
1646 6:47 pm 9:37 pm Feb 16 - Feb 16
1646 6:47 pm 9:37 pm Feb 17 - Feb 17
1646 6:47 pm 9:37 pm Feb 13 - Feb 13
1646 6:47 pm 9:37 pm Feb 19 - Feb 26
1646 6:47 pm 9:37 pm Feb 20 - Feb 27
1646 6:47 pm 9:37 pm Feb 25 - Feb 25
1646 6:47 pm 9:37 pm Mar 2 - Mar 2
1646 6:47 pm 9:37 pm Feb 12 - Feb 18
174 6:47 pm 9:37 pm Feb 14 - Feb 14
174 6:47 pm 9:37 pm Feb 21 - Feb 28
1740 6:47 pm 9:37 pm Mar 3 - Mar 3
1646 6:48 pm 9:38 pm Mar 4 - Mar 4
1646 6:56 pm 9:52 pm Mar 10 - Mar 24
1646 6:56 pm 9:52 pm Mar 9 - Mar 27
1646 6:56 pm 9:52 pm Mar 8 - Mar 15
1646 6:56 pm 9:52 pm Mar 5 - Mar 6
1615 6:57 pm 9:54 pm Feb 7 - Feb 7
1148 8:00 pm 10:56 pm Mar 7 - Mar 7
Airports
Origin

Washington
$257
Destination

Seattle
$257