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 Apr 25 2017 Return: Thu Apr 27 2017 Trip spans 3 days
Major Airline
Major Airline
SEA
11:05a
IAD
6:19p
7h 14m
1 stop
IAD
9:25a
SEA
9:15p
11h 50m
1 stop
Depart: Mon May 1 2017 Return: Tue May 9 2017 Trip spans 9 days
Delta
Delta
SEA
7:05p
IAD
2:04a
6h 59m
1 stop
IAD
3:25a
SEA
11:17a
7h 52m
1 stop
Depart: Sat Apr 29 2017 Return: Sat May 6 2017 Trip spans 8 days
Frontier
Frontier
SEA
2:35p
IAD
10:19p
7h 44m
1 stop
IAD
2:55p
SEA
9:15a
18h 20m
1 stop
Depart: Mon Apr 3 2017 Return: Wed Apr 12 2017 Trip spans 10 days
American Airlines
American Airlines
SEA
8:15p
IAD
3:58a
7h 43m
1 stop
IAD
7:39a
SEA
4:10p
8h 31m
1 stop
Depart: Sat Sep 9 2017 Return: Mon Sep 18 2017 Trip spans 10 days
JetBlue
JetBlue
SEA
3:00a
IAD
11:14a
8h 14m
1 stop
IAD
10:36a
SEA
9:39p
11h 03m
1 stop
Depart: Fri Sep 15 2017 Return: Sun Sep 17 2017 Trip spans 3 days
Alaska Airlines
Alaska Airlines
SEA
4:20a
IAD
9:20a
5h 00m
nonstop
IAD
1:30p
SEA
7:25p
5h 55m
nonstop
Depart: Fri Apr 14 2017 Return: Thu Apr 20 2017 Trip spans 7 days
United
United
SEA
9:05a
IAD
2:05p
5h 00m
nonstop
IAD
12:14p
SEA
5:58p
5h 44m
nonstop
Depart: Mon Aug 14 2017 Return: Wed Sep 6 2017 Trip spans 24 days
Virgin America
Virgin America
SEA
3:05p
IAD
12:43a
9h 38m
1 stop
IAD
5:00a
SEA
4:30p
11h 30m
1 stop
Depart: Wed Apr 26 2017 Return: Tue May 2 2017 Trip spans 7 days
Major Airline
Major Airline
SEA
1:57a
IAD
6:19p
16h 22m
1 stop
IAD
9:25a
SEA
9:15p
11h 50m
1 stop
Depart: Wed May 31 2017 Return: Sun Jun 4 2017 Trip spans 5 days
Major Airline
Major Airline
SEA
9:43a
IAD
8:39p
10h 56m
1 stop
IAD
11:15p
SEA
8:02a
8h 47m
1 stop
Depart: Tue May 2 2017 Return: Tue May 9 2017 Trip spans 8 days
Delta
Delta
SEA
9:15a
IAD
4:44p
7h 29m
1 stop
IAD
3:25a
SEA
11:17a
7h 52m
1 stop
Depart: Thu Jun 1 2017 Return: Thu Jun 8 2017 Trip spans 8 days
Major Airline
Major Airline
SEA
12:20a
IAD
5:24a
5h 04m
nonstop
IAD
9:20a
SEA
3:28p
6h 08m
nonstop
Depart: Fri May 5 2017 Return: Mon May 8 2017 Trip spans 4 days
Frontier
Frontier
SEA
5:58a
IAD
10:15p
16h 17m
1 stop
IAD
2:55p
SEA
9:15a
18h 20m
1 stop
Depart: Wed May 3 2017 Return: Tue May 9 2017 Trip spans 7 days
Delta
Delta
SEA
9:15a
IAD
4:44p
7h 29m
1 stop
IAD
3:25a
SEA
11:17a
7h 52m
1 stop
Depart: Tue Apr 18 2017 Return: Tue Apr 25 2017 Trip spans 8 days
American Airlines
American Airlines
SEA
8:15p
IAD
3:58a
7h 43m
1 stop
IAD
9:49a
SEA
7:57p
10h 08m
1 stop
Depart: Sat Jun 3 2017 Return: Sat Jun 10 2017 Trip spans 8 days
Major Airline
Major Airline
SEA
12:20a
IAD
5:24a
5h 04m
nonstop
IAD
9:20a
SEA
3:28p
6h 08m
nonstop
Depart: Sat May 6 2017 Return: Wed May 10 2017 Trip spans 5 days
Frontier
Frontier
SEA
5:58a
IAD
10:15p
16h 17m
1 stop
IAD
2:55p
SEA
9:15a
18h 20m
1 stop
Depart: Wed Sep 20 2017 Return: Thu Sep 28 2017 Trip spans 9 days
JetBlue
JetBlue
SEA
6:19p
IAD
7:00a
12h 41m
1 stop
IAD
10:36a
SEA
9:39p
11h 03m
1 stop
Depart: Sun May 7 2017 Return: Tue May 9 2017 Trip spans 3 days
Frontier
Frontier
SEA
2:45p
IAD
10:15p
7h 30m
1 stop
IAD
2:55p
SEA
9:15a
18h 20m
1 stop
Depart: Wed Sep 13 2017 Return: Sat Sep 23 2017 Trip spans 11 days
Delta
Delta
SEA
9:15a
IAD
4:08p
6h 53m
1 stop
IAD
1:22p
SEA
9:21p
7h 59m
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 3:57 pm Mar 27 - Mar 31
419 7:50 am 3:57 pm Mar 26 - Mar 30
419 7:50 am 3:57 pm Apr 3 - Apr 3
419 7:50 am 3:55 pm Apr 2 - Apr 2
419 7:50 am 3:57 pm Apr 1 - Apr 1
419 8:00 am 4:05 pm Apr 25 - May 1
419 8:00 am 4:05 pm Apr 18 - Apr 18
419 8:00 am 4:03 pm Apr 23 - Apr 23
419 8:00 am 4:05 pm Apr 7 - Apr 14
419 8:00 am 4:05 pm Apr 24 - Apr 26
419 8:00 am 4:05 pm Apr 10 - Apr 17
419 8:00 am 4:05 pm Apr 5 - Apr 9
419 8:00 am 4:05 pm Apr 8 - Apr 15
419 8:00 am 4:05 pm Apr 16 - Apr 19
419 8:00 am 4:05 pm Apr 20 - Apr 20
419 8:00 am 4:05 pm Apr 21 - Apr 21
419 8:00 am 4:05 pm Apr 22 - Apr 29
419 8:00 am 4:05 pm Apr 4 - Apr 11
260 12:50 pm 8:45 pm Mar 30 - Mar 31
260 1:05 pm 9:05 pm Apr 4 - Apr 4
260 1:05 pm 9:05 pm Apr 5 - Apr 12
260 1:05 pm 9:00 pm Apr 3 - Apr 3
260 1:05 pm 9:05 pm Apr 14 - Apr 26
260 1:05 pm 9:05 pm Apr 11 - Apr 11
260 1:05 pm 9:07 pm Apr 16 - Apr 16
260 1:05 pm 9:05 pm Apr 9 - Apr 9
260 1:05 pm 9:05 pm Apr 28 - Apr 28
260 1:05 pm 9:05 pm Apr 27 - Apr 27
260 1:05 pm 9:05 pm Apr 23 - Apr 30
260 1:05 pm 9:05 pm Apr 20 - Apr 20
260 1:05 pm 9:05 pm Apr 13 - Apr 13
449 10:15 pm 6:10 am Mar 25 - Mar 30
449 10:15 pm 6:10 am Mar 27 - Mar 31
449 10:15 pm 6:10 am Apr 1 - Apr 1
449 10:15 pm 6:10 am Apr 2 - Apr 3
1462 10:40 pm 6:34 am Apr 28 - May 3
1462 10:40 pm 6:34 am Apr 4 - Apr 26
1462 10:45 pm 6:39 am Apr 27 - May 4
* 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.

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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 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.

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Airports
Origin

Seattle
$270
Destination

Washington
$270
Airlines Airline reviews

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

Overall
7.6
Boarding
7.9
Crew
7.9
Comfort
6.9
Food
6.2
Entertainment
6.4