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

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
The price shown for each flight will be the average for all passengers including any infants.
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Book cheap flights from Seattle/Tacoma Intl to Washington Dulles Intl

(Round-trip)
Depart: Mon Sep 26 2016 Return: Tue Sep 27 2016 Trip spans 2 days
Delta
Delta
SEA
8:55p
IAD
5:24a
8h 29m
1 stop
IAD
10:45a
SEA
7:31p
8h 46m
1 stop
Depart: Wed Sep 21 2016 Return: Sun Sep 25 2016 Trip spans 5 days
Major Airline
Major Airline
SEA
11:25a
IAD
7:00p
7h 35m
1 stop
IAD
1:50a
SEA
11:15a
9h 25m
1 stop
Depart: Wed Jun 1 2016 Return: Tue Jun 7 2016 Trip spans 7 days
Virgin America
Virgin America
SEA
5:50a
IAD
3:50p
10h 00m
1 stop
IAD
3:20a
SEA
12:05p
8h 45m
1 stop
Depart: Sat May 14 2016 Return: Wed May 18 2016 Trip spans 5 days
Frontier
Frontier
SEA
7:30a
IAD
10:01p
14h 31m
1 stop
IAD
3:15a
SEA
7:26p
16h 11m
1 stop
Depart: Fri Jun 10 2016 Return: Sun Jun 12 2016 Trip spans 3 days
American Airlines
American Airlines
SEA
6:14p
IAD
3:25a
9h 11m
1 stop
IAD
1:15a
SEA
8:54a
7h 39m
1 stop
Depart: Wed May 25 2016 Return: Fri Jun 3 2016 Trip spans 10 days
United
United
SEA
4:00a
IAD
9:00a
5h 00m
nonstop
IAD
11:30a
SEA
5:15p
5h 45m
nonstop
Depart: Mon Oct 3 2016 Return: Tue Oct 4 2016 Trip spans 2 days
Delta
Delta
SEA
7:20p
IAD
2:17a
6h 57m
1 stop
IAD
8:59a
SEA
3:51p
6h 52m
1 stop
Depart: Tue Aug 30 2016 Return: Tue Sep 6 2016 Trip spans 8 days
Delta
Delta
SEA
8:15p
IAD
4:40a
8h 25m
1 stop
IAD
2:00a
SEA
11:22a
9h 22m
1 stop
Depart: Sat Jun 4 2016 Return: Tue Jun 7 2016 Trip spans 4 days
Major Airline
Major Airline
SEA
5:52a
IAD
1:27p
7h 35m
1 stop
IAD
8:15a
SEA
5:54p
9h 39m
1 stop
Depart: Tue Nov 22 2016 Return: Mon Nov 28 2016 Trip spans 7 days
Alaska Airlines
Alaska Airlines
SEA
4:30a
IAD
9:30a
5h 00m
nonstop
IAD
1:30p
SEA
7:25p
5h 55m
nonstop
Depart: Sat Oct 1 2016 Return: Mon Oct 3 2016 Trip spans 3 days
Delta
Delta
SEA
5:00a
IAD
11:28a
6h 28m
1 stop
IAD
3:06p
SEA
10:25p
7h 19m
1 stop
Depart: Thu Aug 25 2016 Return: Sat Sep 17 2016 Trip spans 24 days
Major Airline
Major Airline
SEA
11:15a
IAD
6:00p
6h 45m
1 stop
IAD
9:10a
SEA
4:16p
7h 06m
1 stop
Depart: Tue Jun 7 2016 Return: Wed Jun 15 2016 Trip spans 9 days
Virgin America
Virgin America
SEA
1:00p
IAD
11:05p
10h 05m
1 stop
IAD
3:20a
SEA
12:05p
8h 45m
1 stop
Depart: Sat Jun 11 2016 Return: Tue Jun 14 2016 Trip spans 4 days
Frontier
Frontier
SEA
3:16p
IAD
10:01p
6h 45m
1 stop
IAD
3:15a
SEA
5:28p
14h 13m
1 stop
Depart: Sat Oct 8 2016 Return: Fri Oct 14 2016 Trip spans 7 days
Delta
Delta
SEA
8:55p
IAD
5:24a
8h 29m
1 stop
IAD
8:59a
SEA
6:25p
9h 26m
1 stop
Depart: Tue Aug 16 2016 Return: Sat Aug 20 2016 Trip spans 5 days
American Airlines
American Airlines
SEA
8:20p
IAD
3:58a
7h 38m
1 stop
IAD
2:59p
SEA
11:39p
8h 40m
1 stop
Depart: Wed Jun 8 2016 Return: Wed Jun 15 2016 Trip spans 8 days
Virgin America
Virgin America
SEA
1:40p
IAD
12:40a
11h 00m
1 stop
IAD
3:20a
SEA
12:05p
8h 45m
1 stop
Depart: Thu Aug 11 2016 Return: Mon Aug 22 2016 Trip spans 12 days
Major Airline
Major Airline
SEA
10:25a
IAD
8:56p
10h 31m
1 stop
IAD
6:50a
SEA
5:24a
22h 34m
1 stop
Depart: Mon Oct 10 2016 Return: Fri Oct 14 2016 Trip spans 5 days
Delta
Delta
SEA
8:55p
IAD
5:24a
8h 29m
1 stop
IAD
8:59a
SEA
3:51p
6h 52m
1 stop
Depart: Sat Sep 3 2016 Return: Sun Sep 4 2016 Trip spans 2 days
Frontier
Frontier
SEA
3:15p
IAD
10:00p
6h 45m
1 stop
IAD
3:15a
SEA
12:17p
9h 02m
1 stop
Direct flights SEA to IAD on United
Flight # Depart SEA Arrive IAD Sun Mon Tue Wed Thu Fri Sat Valid Between
419 7:50 am 3:50 pm Jun 9 - Jun 30
419 8:00 am 4:00 pm May 21 - May 21
419 8:00 am 4:00 pm May 5 - May 12
419 8:00 am 3:58 pm Jun 5 - Jun 5
419 8:00 am 4:00 pm Jun 8 - Jun 8
419 8:00 am 4:00 pm Jun 6 - Jun 6
419 8:00 am 4:00 pm May 9 - May 9
419 8:00 am 4:00 pm May 13 - May 13
419 8:00 am 3:58 pm May 14 - May 14
419 8:00 am 4:00 pm May 15 - May 20
419 8:00 am 4:00 pm May 16 - May 16
419 8:00 am 4:00 pm May 22 - May 22
419 8:00 am 4:00 pm May 23 - May 31
419 8:00 am 4:00 pm May 26 - May 26
419 8:00 am 4:00 pm Jun 2 - Jun 7
419 8:00 am 4:00 pm May 29 - Jun 1
419 8:00 am 3:58 pm May 28 - Jun 4
419 8:00 am 3:58 pm May 27 - May 27
260 12:52 pm 8:54 pm May 23 - May 23
260 12:52 pm 8:54 pm May 24 - May 27
260 12:52 pm 8:54 pm Jun 1 - Jun 8
260 12:52 pm 8:54 pm May 22 - May 22
260 12:52 pm 8:54 pm May 25 - May 25
260 12:52 pm 8:54 pm May 29 - May 30
260 12:52 pm 8:54 pm May 31 - Jun 5
260 12:52 pm 8:54 pm Jun 2 - Jun 7
260 12:52 pm 8:54 pm May 12 - May 12
260 12:52 pm 8:54 pm May 13 - May 20
260 12:52 pm 8:54 pm May 18 - May 18
260 12:52 pm 8:54 pm May 10 - May 17
260 12:52 pm 8:54 pm May 5 - May 9
260 12:52 pm 8:54 pm May 8 - May 15
260 12:55 pm 8:57 pm Jun 9 - Jun 19
260 1:14 pm 9:16 pm May 28 - May 28
260 1:14 pm 9:16 pm May 7 - May 21
260 1:14 pm 9:14 pm Jun 4 - Jun 4
1094 9:08 pm 5:03 am Jun 7 - Jun 7
1094 9:48 pm 5:47 am May 5 - May 11
1094 9:48 pm 5:47 am Jun 8 - Jun 8
1094 9:48 pm 5:47 am Jun 6 - Jun 6
1094 9:48 pm 5:47 am May 13 - Jun 5
1094 9:48 pm 5:47 am May 9 - May 9
1094 9:48 pm 5:47 am May 12 - May 12
1094 9:48 pm 5:47 am May 7 - Jun 4
368 10:25 pm 6:20 am Jun 9 - Jun 30
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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At KAYAK we don’t set prices, so it’s not possible for us to guarantee what other companies are selling.

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Why aren’t prices accurate 100% of the time?
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Airports
Origin

Seattle
$224
Destination

Washington
$224