Find Cheap 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: Fri Dec 1 2017 Return: Wed Dec 6 2017 Trip spans 6 days
Major Airline
Major Airline
SEA
9:05p
IAD
7:50a
10h 45m
1 stop
IAD
12:00a
SEA
11:50a
11h 50m
1 stop
Depart: Wed Oct 18 2017 Return: Thu Oct 19 2017 Trip spans 2 days
American Airlines
American Airlines
SEA
6:10p
IAD
1:50a
7h 40m
1 stop
IAD
7:00a
SEA
4:42p
9h 42m
1 stop
Depart: Wed Sep 6 2017 Return: Tue Sep 12 2017 Trip spans 7 days
Frontier
Frontier
SEA
2:44p
IAD
10:17p
7h 33m
1 stop
IAD
2:35p
SEA
9:02a
18h 27m
1 stop
Depart: Tue Sep 12 2017 Return: Sat Sep 16 2017 Trip spans 5 days
Delta
Delta
SEA
9:15a
IAD
4:44p
7h 29m
1 stop
IAD
12:50p
SEA
8:35p
7h 45m
1 stop
Depart: Tue Jul 18 2017 Return: Mon Jul 24 2017 Trip spans 7 days
United
United
SEA
6:17p
IAD
11:09p
4h 52m
nonstop
IAD
2:15p
SEA
8:03p
5h 48m
nonstop
Depart: Sun Oct 15 2017 Return: Tue Oct 17 2017 Trip spans 3 days
Alaska Airlines
Alaska Airlines
SEA
3:40a
IAD
8:55a
5h 15m
nonstop
IAD
1:05p
SEA
7:15p
6h 10m
nonstop
Depart: Thu Nov 2 2017 Return: Mon Nov 6 2017 Trip spans 5 days
JetBlue
JetBlue
SEA
5:32p
IAD
4:16a
10h 44m
1 stop
IAD
1:43p
SEA
10:19p
8h 36m
1 stop
Depart: Thu Aug 24 2017 Return: Tue Aug 29 2017 Trip spans 6 days
Major Airline
Major Airline
SEA
1:50a
IAD
11:41a
9h 51m
3 stops
IAD
1:00a
SEA
5:48p
40h 48m
3 stops
Depart: Tue Aug 29 2017 Return: Tue Sep 5 2017 Trip spans 8 days
Major Airline
Major Airline
SEA
11:55p
IAD
5:10a
5h 15m
nonstop
IAD
9:20a
SEA
3:30p
6h 10m
nonstop
Depart: Sun Sep 10 2017 Return: Tue Sep 19 2017 Trip spans 10 days
Major Airline
Major Airline
SEA
11:55p
IAD
5:10a
5h 15m
nonstop
IAD
9:20a
SEA
3:30p
6h 10m
nonstop
Depart: Tue Sep 26 2017 Return: Wed Sep 27 2017 Trip spans 2 days
American Airlines
American Airlines
SEA
8:15p
IAD
4:00a
7h 45m
1 stop
IAD
9:45a
SEA
7:38p
9h 53m
1 stop
Depart: Fri Sep 8 2017 Return: Sun Sep 10 2017 Trip spans 3 days
Frontier
Frontier
SEA
2:15p
IAD
10:21p
8h 06m
1 stop
IAD
2:35p
SEA
9:02a
18h 27m
1 stop
Depart: Fri Sep 22 2017 Return: Mon Sep 25 2017 Trip spans 4 days
Delta
Delta
SEA
9:15a
IAD
4:44p
7h 29m
1 stop
IAD
9:00a
SEA
5:03p
8h 03m
1 stop
Depart: Fri Sep 15 2017 Return: Sat Sep 23 2017 Trip spans 9 days
Major Airline
Major Airline
SEA
11:55p
IAD
5:10a
5h 15m
nonstop
IAD
9:20a
SEA
3:30p
6h 10m
nonstop
Depart: Tue Oct 17 2017 Return: Wed Oct 18 2017 Trip spans 2 days
American Airlines
American Airlines
SEA
8:15p
IAD
4:21a
8h 06m
1 stop
IAD
9:36a
SEA
7:51p
10h 15m
1 stop
Depart: Sat Sep 16 2017 Return: Wed Sep 20 2017 Trip spans 5 days
Frontier
Frontier
SEA
2:15p
IAD
10:21p
8h 06m
1 stop
IAD
2:35p
SEA
9:02a
18h 27m
1 stop
Depart: Sat Nov 11 2017 Return: Wed Nov 15 2017 Trip spans 5 days
Delta
Delta
SEA
2:45a
IAD
10:22a
7h 37m
1 stop
IAD
2:55a
SEA
11:34a
8h 39m
1 stop
Depart: Mon Sep 18 2017 Return: Sat Sep 23 2017 Trip spans 6 days
Major Airline
Major Airline
SEA
11:55p
IAD
5:10a
5h 15m
nonstop
IAD
9:20a
SEA
3:30p
6h 10m
nonstop
Depart: Tue Sep 19 2017 Return: Tue Sep 26 2017 Trip spans 8 days
Frontier
Frontier
SEA
3:00p
IAD
10:21p
7h 21m
1 stop
IAD
2:35p
SEA
9:02a
18h 27m
1 stop
Depart: Wed Sep 13 2017 Return: Sat Sep 23 2017 Trip spans 11 days
American Airlines
American Airlines
SEA
6:20p
IAD
3:13a
8h 53m
1 stop
IAD
5:15a
SEA
1:06p
7h 51m
1 stop
Direct flights SEA to IAD on United
Flight # Depart SEA Arrive IAD Sun Mon Tue Wed Thu Fri Sat Valid Between
419 7:25 am 3:30 pm Jul 1 - Jul 8
419 7:25 am 3:32 pm Jul 21 - Jul 30
419 7:25 am 3:30 pm Jul 19 - Aug 1
419 7:25 am 3:32 pm Jul 12 - Jul 12
419 7:25 am 3:30 pm Jul 10 - Jul 18
419 7:25 am 3:32 pm Jul 4 - Jul 4
419 7:25 am 3:32 pm Jul 3 - Jul 3
419 7:25 am 3:32 pm Jul 2 - Jul 16
419 7:45 am 3:52 pm Jun 21 - Jun 30
260 1:05 pm 9:05 pm Jul 13 - Jul 13
260 1:05 pm 9:05 pm Jul 14 - Aug 7
260 1:05 pm 9:07 pm Jul 30 - Aug 6
260 1:05 pm 9:07 pm Jul 16 - Jul 16
260 1:05 pm 9:07 pm Jul 23 - Jul 23
260 1:05 pm 9:07 pm Jul 9 - Jul 9
260 1:05 pm 9:06 pm Jun 21 - Jun 29
260 1:05 pm 9:05 pm Jul 5 - Jul 12
260 1:05 pm 9:07 pm Jul 8 - Aug 12
260 1:10 pm 9:12 pm Jul 4 - Jul 4
260 1:10 pm 9:12 pm Jul 2 - Jul 2
260 1:12 pm 9:14 pm Jul 1 - Jul 1
260 1:15 pm 9:18 pm Jun 30 - Jun 30
1462 10:17 pm 6:09 am Jul 1 - Jul 3
1462 10:17 pm 6:09 am Jul 4 - Jul 8
1462 10:17 pm 6:09 am Jul 5 - Jul 25
1462 10:17 pm 6:09 am Jul 15 - Jul 22
1462 10:17 pm 6:09 am Jul 26 - Jul 29
1462 10:17 pm 6:09 am Jul 27 - Aug 13
1462 10:30 pm 6:22 am Jun 29 - Jun 30
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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

Here's why:

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

We compile tonnes 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 can'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.

If you have 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
$271
Destination

Washington
$271
Airlines Airline reviews

82 travelers who booked a flight from Seattle to Washington rated their chosen airlines with an average of 7.2.

Overall
7.6
Boarding
7.8
Crew
7.8
Comfort
6.9
Food
6.2
Entertainment
6.5