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: Tue Feb 23 2016 Return: Thu Feb 25 2016 Trip spans 3 days
Alaska Airlines
Alaska Airlines
SEA
4:50a
IAD
9:50a
5h 00m
nonstop
IAD
1:50p
SEA
7:55p
6h 05m
nonstop
Depart: Wed Feb 24 2016 Return: Thu Feb 25 2016 Trip spans 2 days
Alaska Airlines
Alaska Airlines
SEA
4:50a
IAD
9:50a
5h 00m
nonstop
IAD
1:50p
SEA
7:55p
6h 05m
nonstop
Depart: Thu Feb 25 2016 Return: Mon Feb 29 2016 Trip spans 5 days
Alaska Airlines
Alaska Airlines
SEA
4:50a
IAD
9:50a
5h 00m
nonstop
IAD
1:50p
SEA
7:55p
6h 05m
nonstop
Depart: Wed Mar 2 2016 Return: Mon Mar 7 2016 Trip spans 6 days
Alaska Airlines
Alaska Airlines
SEA
4:50a
IAD
9:50a
5h 00m
nonstop
IAD
1:50p
SEA
7:55p
6h 05m
nonstop
Depart: Sat Mar 5 2016 Return: Tue Mar 8 2016 Trip spans 4 days
United
United
SEA
2:53a
IAD
7:53a
5h 00m
nonstop
IAD
10:15a
SEA
4:00p
5h 45m
nonstop
Depart: Mon Feb 29 2016 Return: Thu Mar 3 2016 Trip spans 4 days
Alaska Airlines
Alaska Airlines
SEA
4:50a
IAD
9:50a
5h 00m
nonstop
IAD
1:50p
SEA
7:55p
6h 05m
nonstop
Depart: Tue Mar 1 2016 Return: Wed Mar 2 2016 Trip spans 2 days
Alaska Airlines
Alaska Airlines
SEA
4:50a
IAD
9:50a
5h 00m
nonstop
IAD
1:50p
SEA
7:55p
6h 05m
nonstop
Depart: Tue Mar 8 2016 Return: Wed Mar 9 2016 Trip spans 2 days
Alaska Airlines
Alaska Airlines
SEA
4:50a
IAD
9:50a
5h 00m
nonstop
IAD
1:50p
SEA
7:55p
6h 05m
nonstop
Depart: Tue Apr 19 2016 Return: Wed Apr 20 2016 Trip spans 2 days
Virgin America
Virgin America
SEA
1:35p
IAD
12:30a
10h 55m
1 stop
IAD
5:00a
SEA
3:50p
10h 50m
1 stop
Depart: Tue Apr 26 2016 Return: Wed Apr 27 2016 Trip spans 2 days
Virgin America
Virgin America
SEA
1:35p
IAD
12:30a
10h 55m
1 stop
IAD
6:05a
SEA
3:15p
9h 10m
1 stop
Depart: Sat Feb 27 2016 Return: Wed Mar 2 2016 Trip spans 5 days
Virgin America
Virgin America
SEA
3:50a
IAD
2:20p
10h 30m
1 stop
IAD
5:00a
SEA
2:25p
9h 25m
1 stop
Depart: Wed Mar 9 2016 Return: Wed Mar 16 2016 Trip spans 7 days
Virgin America
Virgin America
SEA
1:10p
IAD
11:05p
9h 55m
1 stop
IAD
5:00a
SEA
3:50p
10h 50m
1 stop
Depart: Wed Apr 6 2016 Return: Wed Apr 27 2016 Trip spans 22 days
Virgin America
Virgin America
SEA
3:00a
IAD
10:45a
7h 45m
1 stop
IAD
6:05a
SEA
3:15p
9h 10m
1 stop
Depart: Tue Apr 12 2016 Return: Tue Apr 19 2016 Trip spans 8 days
Virgin America
Virgin America
SEA
1:35p
IAD
12:30a
10h 55m
1 stop
IAD
3:10a
SEA
3:05p
11h 55m
1 stop
Depart: Wed Apr 13 2016 Return: Wed Apr 20 2016 Trip spans 8 days
Virgin America
Virgin America
SEA
12:50p
IAD
10:55p
10h 05m
1 stop
IAD
3:10a
SEA
3:05p
11h 55m
1 stop
Depart: Thu Apr 28 2016 Return: Tue May 3 2016 Trip spans 6 days
Major Airline
Major Airline
SEA
9:40a
IAD
8:45p
11h 05m
1 stop
IAD
2:05a
SEA
11:15a
9h 10m
1 stop
Depart: Thu Mar 17 2016 Return: Sun Mar 20 2016 Trip spans 4 days
American Airlines
American Airlines
SEA
8:10p
IAD
3:55a
7h 45m
1 stop
IAD
1:15a
SEA
9:13a
7h 58m
1 stop
Depart: Tue Jul 12 2016 Return: Tue Jul 26 2016 Trip spans 15 days
Delta
Delta
SEA
8:50p
IAD
5:27a
8h 37m
1 stop
IAD
3:05p
SEA
10:40p
7h 35m
1 stop
Depart: Mon Jul 4 2016 Return: Wed Jul 6 2016 Trip spans 3 days
Southwest
Southwest
SEA
1:40a
IAD
9:10a
7h 30m
1 stop
IAD
12:45p
SEA
9:00p
8h 15m
1 stop
Depart: Mon Aug 15 2016 Return: Sat Aug 20 2016 Trip spans 6 days
JetBlue
JetBlue
SEA
7:26p
IAD
3:21a
7h 55m
1 stop
IAD
10:50a
SEA
10:59p
12h 09m
1 stop
Direct flights SEA to IAD on United
Flight # Depart SEA Arrive IAD Sun Mon Tue Wed Thu Fri Sat Valid Between
419 7:00 am 3:00 pm Mar 20 - Mar 20
419 7:10 am 3:04 pm Feb 28 - Feb 28
419 7:10 am 3:04 pm Feb 21 - Feb 21
419 7:53 am 3:53 pm Mar 6 - Mar 6
419 7:53 am 3:53 pm Mar 4 - Mar 11
419 7:53 am 3:53 pm Mar 3 - Mar 10
419 7:53 am 3:53 pm Mar 14 - Mar 25
419 7:53 am 3:53 pm Mar 13 - Mar 13
419 7:53 am 3:53 pm Mar 8 - Mar 8
419 7:53 am 3:53 pm Mar 15 - Mar 15
419 7:53 am 3:55 pm Mar 19 - Mar 26
419 7:53 am 3:53 pm Mar 12 - Mar 12
419 8:00 am 3:54 pm Mar 1 - Mar 1
419 8:00 am 3:54 pm Feb 12 - Feb 19
419 8:00 am 3:52 pm Feb 27 - Feb 27
419 8:00 am 3:54 pm Feb 23 - Feb 23
419 8:00 am 3:52 pm Feb 20 - Feb 20
419 8:00 am 3:54 pm Feb 22 - Mar 2
1204 1:04 pm 9:05 pm Mar 3 - Mar 3
1204 1:04 pm 9:05 pm Mar 7 - Mar 10
1204 1:04 pm 9:03 pm Mar 8 - Mar 8
1204 1:04 pm 9:05 pm Mar 14 - Mar 14
1204 1:04 pm 9:03 pm Mar 15 - Mar 23
1204 1:04 pm 9:05 pm Mar 17 - Mar 17
1204 1:04 pm 9:03 pm Mar 21 - Mar 21
1204 1:11 pm 9:03 pm Feb 17 - Feb 24
1204 1:11 pm 9:05 pm Feb 22 - Feb 29
1204 1:11 pm 9:05 pm Feb 23 - Feb 23
1204 1:11 pm 9:05 pm Feb 25 - Feb 25
1204 1:11 pm 9:05 pm Mar 1 - Mar 1
1204 1:11 pm 9:05 pm Feb 19 - Feb 26
1204 1:11 pm 9:05 pm Mar 2 - Mar 2
1471 10:00 pm 6:59 am Mar 12 - Mar 12
1471 10:00 pm 5:59 am Mar 15 - Mar 22
1471 10:00 pm 5:59 am Mar 13 - Mar 20
1471 10:00 pm 5:59 am Mar 3 - Mar 10
1471 10:00 pm 5:59 am Mar 4 - Mar 11
1471 10:00 pm 5:59 am Mar 8 - Mar 8
1471 10:00 pm 5:59 am Mar 14 - Mar 24
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We make every attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller
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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Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we don't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find on occasion that certain prices are no longer available.

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Airports
Origin

Seattle
$257
Destination

Washington
$257