Browse Origins:
Browse Destinations:

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: Tue Apr 21 2015 Return: Mon May 4 2015 Trip spans 14 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: Wed Apr 22 2015 Return: Mon Apr 27 2015 Trip spans 6 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: Thu Apr 23 2015 Return: Mon Apr 27 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: Fri Apr 24 2015 Return: Tue May 5 2015 Trip spans 12 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: Wed Apr 29 2015 Return: Mon May 11 2015 Trip spans 13 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: Thu Apr 30 2015 Return: Mon May 4 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: Wed May 6 2015 Return: Tue May 12 2015 Trip spans 7 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: Wed May 13 2015 Return: Tue Jun 2 2015 Trip spans 21 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: Tue Apr 28 2015 Return: Tue May 12 2015 Trip spans 15 days
American Airlines
American Airlines
IAD
1:20a
SEA
9:08a
7h 48m
1 stop
SEA
12:55p
IAD
11:04p
10h 09m
1 stop
Depart: Tue May 5 2015 Return: Wed May 6 2015 Trip spans 2 days
American Airlines
American Airlines
IAD
4:05a
SEA
1:45p
9h 40m
1 stop
SEA
7:10a
IAD
4:29p
9h 19m
1 stop
Depart: Tue May 12 2015 Return: Mon Jun 1 2015 Trip spans 21 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 Jun 9 2015 Return: Wed Jun 10 2015 Trip spans 2 days
American Airlines
American Airlines
IAD
3:50p
SEA
11:40p
7h 50m
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
3:37a
7h 12m
1 stop
Depart: Thu Jun 4 2015 Return: Sun Jun 7 2015 Trip spans 4 days
American Airlines
American Airlines
IAD
3:50p
SEA
11:40p
7h 50m
1 stop
SEA
8:25p
IAD
3:37a
7h 12m
1 stop
Depart: Fri Jun 5 2015 Return: Sun Jun 7 2015 Trip spans 3 days
American Airlines
American Airlines
IAD
7:07a
SEA
4:43p
9h 36m
1 stop
SEA
8:25p
IAD
3:37a
7h 12m
1 stop
Depart: Tue Apr 14 2015 Return: Wed Apr 29 2015 Trip spans 16 days
Alaska Airlines
Alaska Airlines
IAD
2:20p
SEA
8:15p
5h 55m
nonstop
SEA
5:20a
IAD
10:20a
5h 00m
nonstop
Depart: Sat Apr 25 2015 Return: Mon Apr 27 2015 Trip spans 3 days
United
United
IAD
1:25p
SEA
7:15p
5h 50m
nonstop
SEA
5:41p
IAD
10:45p
5h 04m
nonstop
Depart: Sat Apr 18 2015 Return: Tue Apr 21 2015 Trip spans 4 days
Virgin America
Virgin America
IAD
3:15a
SEA
1:55p
10h 40m
1 stop
SEA
4:10p
IAD
12:45a
8h 35m
1 stop
Depart: Tue Sep 8 2015 Return: Tue Sep 15 2015 Trip spans 8 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: Thu Apr 2 2015 Return: Wed Apr 15 2015 Trip spans 14 days
Delta
Delta
IAD
8:40a
SEA
4:14p
7h 34m
1 stop
SEA
5:46a
IAD
2:12p
8h 26m
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 11:02 am Apr 3 - Apr 3
1552 8:15 am 11:02 am Apr 6 - Apr 6
1730 8:15 am 11:02 am Apr 2 - Apr 2
348 8:15 am 11:03 am Apr 7 - Apr 14
348 8:15 am 11:03 am Apr 15 - Apr 30
348 8:15 am 11:03 am Apr 8 - Apr 8
939 8:15 am 11:03 am May 1 - May 4
357 12:30 pm 3:15 pm Mar 26 - Apr 2
357 12:30 pm 3:18 pm Apr 8 - Apr 8
357 12:30 pm 3:18 pm Apr 29 - Apr 29
357 12:30 pm 3:18 pm Apr 14 - Apr 22
357 12:30 pm 3:18 pm Apr 9 - May 4
1646 12:32 pm 3:22 pm Apr 28 - Apr 28
1668 12:35 pm 3:25 pm Apr 26 - Apr 26
357 12:35 pm 3:23 pm May 3 - May 3
357 12:35 pm 3:23 pm Apr 12 - Apr 19
357 12:36 pm 3:21 pm Apr 3 - Apr 6
1253 5:25 pm 8:15 pm Apr 8 - Apr 8
1253 5:25 pm 8:15 pm Apr 22 - Apr 22
1253 5:25 pm 8:15 pm Apr 21 - Apr 21
1253 5:25 pm 8:15 pm Apr 15 - Apr 15
1253 5:25 pm 8:15 pm Apr 29 - Apr 29
1253 5:25 pm 8:15 pm Apr 28 - Apr 28
1253 5:25 pm 8:15 pm Apr 14 - Apr 14
1261 5:25 pm 8:15 pm May 2 - May 2
1261 5:25 pm 8:15 pm Apr 25 - Apr 25
1261 5:25 pm 8:15 pm Apr 11 - Apr 11
1261 5:25 pm 8:15 pm Apr 18 - Apr 18
643 5:25 pm 8:10 pm Apr 9 - Apr 20
643 5:25 pm 8:10 pm Apr 24 - May 4
643 5:25 pm 8:13 pm Apr 23 - Apr 23
1253 5:30 pm 8:20 pm Apr 19 - Apr 19
1253 5:30 pm 8:20 pm Apr 12 - Apr 12
1253 5:30 pm 8:20 pm May 3 - May 3
1253 5:30 pm 8:20 pm Apr 26 - Apr 26
643 5:41 pm 8:26 pm Apr 7 - Apr 7
1646 6:56 pm 9:52 pm Apr 3 - Apr 3
1646 6:56 pm 9:52 pm Apr 2 - Apr 2
1740 6:56 pm 9:52 pm Apr 5 - Apr 5
1646 7:21 pm 10:17 pm Apr 6 - Apr 6
1417 8:00 pm 10:56 pm Apr 4 - Apr 4
Airports
Origin

Washington
$257
Destination

Seattle
$257