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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: Tue Apr 21 2015 Return: Mon Apr 27 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: Sat May 2 2015 Return: Mon May 4 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: 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
3:29a
9h 24m
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
1:46a
7h 41m
1 stop
Depart: Tue Apr 28 2015 Return: Mon May 4 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 Apr 29 2015 Return: Sat May 2 2015 Trip spans 4 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: Wed May 6 2015 Return: Mon May 11 2015 Trip spans 6 days
US Airways
US Airways
IAD
1:20a
SEA
9:08a
7h 48m
1 stop
SEA
6:05p
IAD
3:34a
9h 29m
1 stop
Depart: Thu May 7 2015 Return: Mon May 11 2015 Trip spans 5 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: Tue May 12 2015 Return: Wed May 13 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: Sat Apr 25 2015 Return: Mon Apr 27 2015 Trip spans 3 days
American Airlines
American Airlines
IAD
1:20a
SEA
9:08a
7h 48m
1 stop
SEA
8:15p
IAD
4:10a
7h 55m
1 stop
Depart: Mon May 4 2015 Return: Wed May 6 2015 Trip spans 3 days
American Airlines
American Airlines
IAD
1:20a
SEA
9:08a
7h 48m
1 stop
SEA
2:55a
IAD
10:26a
7h 31m
1 stop
Depart: Fri May 8 2015 Return: Mon May 18 2015 Trip spans 11 days
American Airlines
American Airlines
IAD
2:10p
SEA
11:04p
8h 54m
1 stop
SEA
6:05p
IAD
3:34a
9h 29m
1 stop
Depart: Sun Apr 26 2015 Return: Mon Apr 27 2015 Trip spans 2 days
American Airlines
American Airlines
IAD
1:30a
SEA
10:04a
8h 34m
1 stop
SEA
8:15p
IAD
4:10a
7h 55m
1 stop
Depart: Thu Apr 30 2015 Return: Wed May 6 2015 Trip spans 7 days
American Airlines
American Airlines
IAD
1:30a
SEA
10:04a
8h 34m
1 stop
SEA
2:55a
IAD
10:26a
7h 31m
1 stop
Depart: Fri May 1 2015 Return: Mon May 4 2015 Trip spans 4 days
American Airlines
American Airlines
IAD
2:10p
SEA
11:05p
8h 55m
1 stop
SEA
8:15p
IAD
4:10a
7h 55m
1 stop
Depart: Mon Apr 27 2015 Return: Wed May 6 2015 Trip spans 10 days
United
United
IAD
1:25p
SEA
7:10p
5h 45m
nonstop
SEA
9:00a
IAD
2:04p
5h 04m
nonstop
Depart: Tue May 5 2015 Return: Sat May 9 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 May 20 2015 Return: Mon Jun 1 2015 Trip spans 13 days
Virgin America
Virgin America
IAD
5:00a
SEA
3:55p
10h 55m
1 stop
SEA
6:10a
IAD
4:00p
9h 50m
1 stop
Depart: Mon Sep 21 2015 Return: Fri Sep 25 2015 Trip spans 5 days
JetBlue Airways
JetBlue Airways
IAD
2:55a
SEA
11:22a
8h 27m
1 stop
SEA
5:50p
IAD
2:09a
8h 19m
1 stop
Depart: Tue Apr 7 2015 Return: Tue Apr 21 2015 Trip spans 15 days
Delta
Delta
IAD
1:55p
SEA
10:11p
8h 16m
1 stop
SEA
8:50p
IAD
5:25a
8h 35m
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
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
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 12:30 pm 3:18 pm Apr 8 - Apr 8
357 12:30 pm 3:18 pm Apr 14 - Apr 22
357 12:30 pm 3:18 pm Apr 29 - Apr 29
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 Apr 12 - Apr 19
357 12:35 pm 3:23 pm May 3 - May 3
1653 12:43 pm 3:30 pm May 6 - May 6
1717 12:43 pm 3:30 pm May 7 - May 7
1717 12:43 pm 3:30 pm May 8 - May 29
1143 5:20 pm 8:10 pm May 6 - May 21
1253 5:25 pm 8:15 pm Apr 8 - 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
1253 5:25 pm 8:15 pm Apr 22 - Apr 22
1253 5:25 pm 8:15 pm Apr 21 - Apr 21
1261 5:25 pm 8:15 pm May 2 - May 2
1261 5:25 pm 8:15 pm Apr 11 - Apr 11
1261 5:25 pm 8:15 pm Apr 18 - Apr 18
1261 5:25 pm 8:15 pm Apr 25 - Apr 25
643 5:25 pm 8:10 pm Apr 9 - Apr 20
643 5:25 pm 8:13 pm May 5 - May 5
643 5:25 pm 8:13 pm Apr 23 - Apr 23
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
1253 5:30 pm 8:20 pm Apr 12 - Apr 12
1253 5:30 pm 8:20 pm Apr 26 - Apr 26
1253 5:30 pm 8:20 pm Apr 19 - Apr 19
Airports
Origin

Washington
$257
Destination

Seattle
$257