Browse Origins:
Browse Destinations:

Find Flight Deals from Seattle/Tacoma Intl to Washington Dulles Intl (SEA - IAD)

Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights from Seattle/Tacoma Intl to Washington Dulles Intl

(Round-trip)
Depart: Wed Mar 25 2015 Return: Tue Apr 7 2015 Trip spans 14 days
$257
Select
American Airlines
American Airlines
SEA
7:25a
→
IAD
2:23p
6h 58m
1 stop
IAD
1:20a
→
SEA
9:08a
7h 48m
1 stop
Depart: Wed Apr 8 2015 Return: Thu Apr 9 2015 Trip spans 2 days
$257
Select
US Airways
US Airways
SEA
7:10a
→
IAD
2:09p
6h 59m
1 stop
IAD
1:20a
→
SEA
9:08a
7h 48m
1 stop
Depart: Mon Apr 13 2015 Return: Wed Apr 15 2015 Trip spans 3 days
$257
Select
American Airlines
American Airlines
SEA
6:05p
→
IAD
1:46a
7h 41m
1 stop
IAD
1:20a
→
SEA
9:08a
7h 48m
1 stop
Depart: Tue Apr 14 2015 Return: Thu Apr 16 2015 Trip spans 3 days
$257
Select
US Airways
US Airways
SEA
7:10a
→
IAD
2:09p
6h 59m
1 stop
IAD
1:20a
→
SEA
9:08a
7h 48m
1 stop
Depart: Wed Apr 15 2015 Return: Tue Apr 21 2015 Trip spans 7 days
$257
Select
American Airlines
American Airlines
SEA
6:05p
→
IAD
3:29a
9h 24m
1 stop
IAD
9:40a
→
SEA
7:49p
10h 09m
1 stop
Depart: Mon Apr 20 2015 Return: Wed Apr 29 2015 Trip spans 10 days
$257
Select
American Airlines
American Airlines
SEA
6:05p
→
IAD
1:46a
7h 41m
1 stop
IAD
1:20a
→
SEA
9:08a
7h 48m
1 stop
Depart: Tue Apr 21 2015 Return: Thu Apr 23 2015 Trip spans 3 days
$257
Select
American Airlines
American Airlines
SEA
7:10a
→
IAD
4:29p
9h 19m
1 stop
IAD
1:20a
→
SEA
9:08a
7h 48m
1 stop
Depart: Wed Apr 22 2015 Return: Sat Apr 25 2015 Trip spans 4 days
$257
Select
American Airlines
American Airlines
SEA
7:10a
→
IAD
2:09p
6h 59m
1 stop
IAD
1:20a
→
SEA
9:08a
7h 48m
1 stop
Depart: Thu Apr 23 2015 Return: Tue Apr 28 2015 Trip spans 6 days
$257
Select
US Airways
US Airways
SEA
7:10a
→
IAD
2:09p
6h 59m
1 stop
IAD
1:20a
→
SEA
9:08a
7h 48m
1 stop
Depart: Mon Apr 27 2015 Return: Thu Apr 30 2015 Trip spans 4 days
$257
Select
American Airlines
American Airlines
SEA
6:05p
→
IAD
3:29a
9h 24m
1 stop
IAD
1:20a
→
SEA
9:08a
7h 48m
1 stop
Depart: Tue Apr 28 2015 Return: Wed Apr 29 2015 Trip spans 2 days
$257
Select
US Airways
US Airways
SEA
7:10a
→
IAD
2:09p
6h 59m
1 stop
IAD
1:20a
→
SEA
9:08a
7h 48m
1 stop
Depart: Wed Apr 29 2015 Return: Thu Apr 30 2015 Trip spans 2 days
$257
Select
American Airlines
American Airlines
SEA
7:10a
→
IAD
2:09p
6h 59m
1 stop
IAD
1:20a
→
SEA
9:08a
7h 48m
1 stop
Depart: Sat May 2 2015 Return: Mon May 4 2015 Trip spans 3 days
$257
Select
US Airways
US Airways
SEA
7:10a
→
IAD
2:09p
6h 59m
1 stop
IAD
1:20a
→
SEA
9:08a
7h 48m
1 stop
Depart: Wed May 6 2015 Return: Wed May 20 2015 Trip spans 15 days
$257
Select
American Airlines
American Airlines
SEA
7:10a
→
IAD
2:09p
6h 59m
1 stop
IAD
1:20a
→
SEA
8:55a
7h 35m
1 stop
Depart: Tue Mar 24 2015 Return: Wed Apr 8 2015 Trip spans 16 days
$267
Select
Multiple Airlines
Multiple Airlines
SEA
5:20a
→
IAD
10:20a
5h 00m
nonstop
IAD
1:20a
→
SEA
9:08a
7h 48m
1 stop
Depart: Tue Mar 17 2015 Return: Tue Mar 24 2015 Trip spans 8 days
$277
Select
Alaska Airlines
Alaska Airlines
SEA
5:20a
→
IAD
10:20a
5h 00m
nonstop
IAD
2:20p
→
SEA
8:15p
5h 55m
nonstop
Depart: Thu Mar 26 2015 Return: Wed Apr 1 2015 Trip spans 7 days
$297
Select
United
United
SEA
4:10a
→
IAD
9:04a
4h 54m
nonstop
IAD
2:57p
→
SEA
8:53p
5h 56m
nonstop
Depart: Tue Jun 2 2015 Return: Thu Jun 4 2015 Trip spans 3 days
$300
Select
Virgin America
Virgin America
SEA
3:20p
→
IAD
11:10p
7h 50m
1 stop
IAD
5:00a
→
SEA
3:55p
10h 55m
1 stop
Depart: Mon Mar 16 2015 Return: Mon Mar 30 2015 Trip spans 15 days
$309
Select
Delta
Delta
SEA
8:40p
→
IAD
5:29a
8h 49m
1 stop
IAD
2:10a
→
SEA
9:39a
7h 29m
1 stop
Depart: Sat Aug 29 2015 Return: Mon Sep 7 2015 Trip spans 10 days
$451
Select
JetBlue Airways
JetBlue Airways
SEA
7:00p
→
IAD
3:03a
8h 03m
1 stop
IAD
2:45a
→
SEA
11:19a
8h 34m
1 stop
Change your search
Select an airline:  United
Direct flights SEA to IAD on United
Flight # Depart SEA Arrive IAD Sun Mon Tue Wed Thu Fri Sat Valid Between
1984 7:25 am 3:26 pm ✈ Apr 7 - Apr 7
511 7:25 am 3:19 pm ✈ Mar 14 - Apr 4
511 7:25 am 3:19 pm ✈ Mar 7 - Mar 7
511 8:00 am 3:54 pm ✈ Mar 29 - Mar 29
511 8:00 am 3:54 pm ✈ Mar 15 - Mar 22
511 8:00 am 3:54 pm ✈ Apr 5 - Apr 5
511 8:00 am 3:54 pm ✈ Mar 8 - Mar 8
511 8:10 am 4:04 pm ✈ Mar 10 - Mar 17
511 8:10 am 4:04 pm ✈ ✈ ✈ ✈ Mar 31 - Apr 3
511 8:10 am 4:04 pm ✈ Apr 6 - Apr 6
511 8:10 am 4:04 pm ✈ Mar 9 - Mar 9
511 8:10 am 4:04 pm ✈ Mar 24 - Mar 24
511 8:10 am 4:04 pm ✈ ✈ ✈ Mar 13 - Mar 18
511 8:10 am 4:04 pm ✈ Mar 23 - Mar 30
511 8:10 am 4:04 pm ✈ ✈ ✈ Mar 19 - Mar 27
511 8:10 am 4:04 pm ✈ ✈ Mar 11 - Mar 12
260 1:21 pm 9:20 pm ✈ ✈ Apr 7 - May 5
260 1:25 pm 9:19 pm ✈ Mar 25 - Mar 25
260 1:26 pm 9:20 pm ✈ Apr 5 - Apr 5
260 1:26 pm 9:20 pm ✈ Mar 22 - Mar 29
260 1:26 pm 9:20 pm ✈ Mar 8 - Mar 8
262 1:26 pm 9:20 pm ✈ Mar 15 - Mar 15
260 1:31 pm 9:25 pm ✈ Mar 9 - Mar 16
260 1:31 pm 9:25 pm ✈ Mar 11 - Mar 18
260 1:31 pm 9:25 pm ✈ Mar 13 - Mar 27
260 1:31 pm 9:25 pm ✈ Apr 1 - Apr 1
260 1:31 pm 9:25 pm ✈ Apr 3 - Apr 3
262 1:31 pm 9:25 pm ✈ Mar 12 - Mar 19
262 1:31 pm 9:25 pm ✈ Mar 26 - Apr 2
419 1:31 pm 9:25 pm ✈ Mar 23 - Mar 23
419 1:31 pm 9:25 pm ✈ Mar 10 - Mar 24
419 1:31 pm 9:25 pm ✈ Mar 30 - Mar 30
642 1:31 pm 9:25 pm ✈ Apr 6 - Apr 6
762 1:31 pm 9:25 pm ✈ Mar 31 - Mar 31
262 9:41 pm 5:45 am ✈ Apr 7 - Apr 7
1024 10:35 pm 6:31 am ✈ Mar 13 - Mar 13
1046 10:35 pm 6:31 am ✈ Mar 28 - Mar 28
1083 10:35 pm 6:31 am ✈ Apr 4 - Apr 4
1111 10:35 pm 7:31 am ✈ Mar 7 - Mar 7
112 10:35 pm 6:31 am ✈ Mar 19 - Mar 26
112 10:35 pm 6:31 am ✈ Mar 29 - Mar 29
112 10:35 pm 6:31 am ✈ Apr 3 - Apr 3
112 10:35 pm 6:31 am ✈ Apr 2 - Apr 2
112 10:35 pm 6:31 am ✈ Mar 20 - Mar 20
1143 10:35 pm 6:31 am ✈ Mar 15 - Mar 15
1166 10:35 pm 6:31 am ✈ Mar 14 - Mar 14
1217 10:35 pm 6:31 am ✈ Mar 31 - Mar 31
1218 10:35 pm 6:31 am ✈ Mar 17 - Mar 17
1403 10:35 pm 6:31 am ✈ Mar 22 - Mar 22
1474 10:35 pm 6:31 am ✈ Mar 30 - Mar 30
1474 10:35 pm 6:31 am ✈ Mar 24 - Mar 24
1474 10:35 pm 6:31 am ✈ Mar 23 - Mar 23
1483 10:35 pm 6:31 am ✈ Mar 18 - Mar 18
1579 10:35 pm 6:31 am ✈ Mar 21 - Mar 21
1582 10:35 pm 6:31 am ✈ Mar 8 - Mar 8
1641 10:35 pm 6:31 am ✈ Mar 11 - Mar 11
1641 10:35 pm 6:31 am ✈ Mar 12 - Mar 12
1647 10:35 pm 6:31 am ✈ Mar 10 - Mar 10
1647 10:35 pm 6:31 am ✈ Mar 9 - Mar 16
1684 10:35 pm 6:31 am ✈ Mar 27 - Mar 27
262 10:35 pm 6:26 am ✈ Apr 5 - Apr 5
762 10:35 pm 6:26 am ✈ Apr 1 - Apr 1
1607 10:37 pm 6:33 am ✈ Apr 6 - Apr 6
1474 10:42 pm 6:38 am ✈ Mar 25 - Mar 25
Airports
Origin
Seattle
$257
Destination
Washington
$257