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.
Compare vs. KAYAK all | none
Browse Origins:
Browse Destinations:

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: Sat Feb 27 2016 Return: Tue Mar 1 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: 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: 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: Wed Mar 2 2016 Return: Sat Mar 5 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 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 Feb 23 2016 Return: Wed Feb 24 2016 Trip spans 2 days
Virgin America
Virgin America
SEA
1:10p
IAD
11:05p
9h 55m
1 stop
IAD
4:00a
SEA
3:25p
11h 25m
1 stop
Depart: Wed Feb 24 2016 Return: Tue Mar 1 2016 Trip spans 7 days
Virgin America
Virgin America
SEA
6:15a
IAD
2:20p
8h 05m
1 stop
IAD
4:00a
SEA
3:25p
11h 25m
1 stop
Depart: Wed Mar 9 2016 Return: Tue Mar 15 2016 Trip spans 6 days
Virgin America
Virgin America
SEA
6:15a
IAD
2:20p
8h 05m
1 stop
IAD
6:15a
SEA
3:05p
8h 50m
1 stop
Depart: Tue Mar 15 2016 Return: Tue Apr 12 2016 Trip spans 29 days
Virgin America
Virgin America
SEA
3:00a
IAD
10:45a
7h 45m
1 stop
IAD
6:15a
SEA
3:05p
8h 50m
1 stop
Depart: Tue Apr 5 2016 Return: Tue Apr 19 2016 Trip spans 15 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 6 2016 Return: Tue Apr 12 2016 Trip spans 7 days
Virgin America
Virgin America
SEA
3:00a
IAD
10:45a
7h 45m
1 stop
IAD
6:15a
SEA
3:05p
8h 50m
1 stop
Depart: Tue Apr 12 2016 Return: Tue Apr 19 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: Tue Apr 19 2016 Return: Sat Apr 23 2016 Trip spans 5 days
Virgin America
Virgin America
SEA
3:00a
IAD
10:45a
7h 45m
1 stop
IAD
6:15a
SEA
3:05p
8h 50m
1 stop
Depart: Sat Apr 23 2016 Return: Tue Apr 26 2016 Trip spans 4 days
Virgin America
Virgin America
SEA
7:15a
IAD
4:00p
8h 45m
1 stop
IAD
6:15a
SEA
3:05p
8h 50m
1 stop
Depart: Sat Apr 30 2016 Return: Tue May 3 2016 Trip spans 4 days
Virgin America
Virgin America
SEA
5:50a
IAD
4:05p
10h 15m
1 stop
IAD
6:05a
SEA
3:15p
9h 10m
1 stop
Depart: Tue May 3 2016 Return: Sat May 7 2016 Trip spans 5 days
Virgin America
Virgin America
SEA
1:40p
IAD
12:45a
11h 05m
1 stop
IAD
3:25a
SEA
12:05p
8h 40m
1 stop
Depart: Fri Feb 26 2016 Return: Thu Mar 10 2016 Trip spans 14 days
Delta
Delta
SEA
8:00p
IAD
4:51a
8h 51m
1 stop
IAD
1:00a
SEA
8:51a
7h 51m
1 stop
Depart: Wed Aug 3 2016 Return: Mon Aug 8 2016 Trip spans 6 days
Major Airline
Major Airline
SEA
3:40p
IAD
8:29p
4h 49m
nonstop
IAD
4:30a
SEA
10:09a
5h 39m
nonstop
Depart: Tue Jun 14 2016 Return: Sun Jun 19 2016 Trip spans 6 days
American Airlines
American Airlines
SEA
8:15p
IAD
4:21a
8h 06m
1 stop
IAD
2:35p
SEA
11:15p
8h 40m
1 stop
Depart: Mon Jun 20 2016 Return: Tue Jun 21 2016 Trip spans 2 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 7:10 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 8 - Mar 8
419 7:53 am 3:53 pm Mar 12 - Mar 12
419 7:53 am 3:53 pm Mar 15 - Mar 15
419 7:53 am 3:53 pm Mar 13 - Mar 13
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 3:54 pm Feb 22 - Mar 2
419 8:00 am 3:54 pm Mar 1 - Mar 1
419 8:00 am 3:54 pm Feb 16 - Feb 16
419 8:00 am 3:54 pm Feb 12 - Feb 19
419 8:00 am 3:52 pm Feb 20 - Feb 20
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 9:05 pm Mar 7 - Mar 10
1204 1:04 pm 9:05 pm Mar 14 - Mar 14
1204 1:04 pm 9:05 pm Mar 3 - Mar 3
1204 1:04 pm 9:03 pm Mar 8 - Mar 8
1204 1:11 pm 9:05 pm Feb 16 - Feb 16
1204 1:11 pm 9:03 pm Feb 17 - Feb 24
1204 1:11 pm 9:05 pm Mar 2 - Mar 2
1204 1:11 pm 9:05 pm Feb 11 - Feb 18
1204 1:11 pm 9:05 pm Feb 19 - Feb 26
1204 1:11 pm 9:05 pm Feb 23 - Feb 23
1204 1:11 pm 9:05 pm Feb 22 - Feb 29
1204 1:11 pm 9:05 pm Feb 25 - Feb 25
1204 1:11 pm 9:05 pm Mar 1 - Mar 1
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 6:59 am Mar 12 - Mar 12
1471 10:00 pm 5:59 am Mar 13 - Mar 20
1471 10:00 pm 5:59 am Mar 14 - Mar 24
1471 10:00 pm 5:59 am Mar 15 - Mar 22
* 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.

We aggregate tons of data for you
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.

More questions or if you have a bad price to report to us
Please send us an email and someone from our team will get back to you promptly.

Airports
Origin

Seattle
$277
Destination

Washington
$277