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

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
Students
under 26
The price shown for each flight will be the average for all passengers including any infants.
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Book cheap flights from Washington Dulles Intl to Seattle/Tacoma Intl

(Round-trip)
Depart: Wed Feb 8 2017 Return: Mon Feb 13 2017 Trip spans 6 days
Major Airline
Major Airline
IAD
11:00p
SEA
10:15a
11h 15m
1 stop
SEA
7:55a
IAD
5:50p
9h 55m
1 stop
Depart: Sat Jan 28 2017 Return: Tue Jan 31 2017 Trip spans 4 days
Alaska Airlines
Alaska Airlines
IAD
2:00p
SEA
8:00p
6h 00m
nonstop
SEA
4:55a
IAD
9:47a
4h 52m
nonstop
Depart: Sat Feb 18 2017 Return: Tue Feb 21 2017 Trip spans 4 days
Delta
Delta
IAD
9:44a
SEA
8:20p
10h 36m
1 stop
SEA
5:50p
IAD
1:33a
7h 43m
1 stop
Depart: Sat Feb 11 2017 Return: Tue Feb 14 2017 Trip spans 4 days
United
United
IAD
12:25p
SEA
6:16p
5h 51m
nonstop
SEA
2:50a
IAD
7:45a
4h 55m
nonstop
Depart: Sun Feb 26 2017 Return: Mon Feb 27 2017 Trip spans 2 days
American Airlines
American Airlines
IAD
1:51p
SEA
10:48p
8h 57m
1 stop
SEA
5:35p
IAD
2:11a
8h 36m
1 stop
Depart: Fri Apr 21 2017 Return: Sun Apr 23 2017 Trip spans 3 days
Frontier
Frontier
IAD
3:10p
SEA
9:14a
18h 04m
1 stop
SEA
2:59p
IAD
10:05p
7h 06m
1 stop
Depart: Sat Apr 1 2017 Return: Wed Apr 5 2017 Trip spans 5 days
JetBlue
JetBlue
IAD
10:19a
SEA
9:47p
11h 28m
1 stop
SEA
6:26p
IAD
2:24a
7h 58m
1 stop
Depart: Wed Feb 15 2017 Return: Fri Feb 24 2017 Trip spans 10 days
Major Airline
Major Airline
IAD
7:05a
SEA
5:33p
10h 28m
1 stop
SEA
7:15a
IAD
9:15a
26h 00m
1 stop
Depart: Wed Feb 22 2017 Return: Wed Mar 1 2017 Trip spans 8 days
Major Airline
Major Airline
IAD
11:50p
SEA
9:30a
9h 40m
1 stop
SEA
7:55a
IAD
5:50p
9h 55m
1 stop
Depart: Wed Mar 1 2017 Return: Sat Mar 4 2017 Trip spans 4 days
Delta
Delta
IAD
7:35a
SEA
3:41p
8h 06m
1 stop
SEA
5:50p
IAD
1:33a
7h 43m
1 stop
Depart: Sat Feb 4 2017 Return: Mon Mar 6 2017 Trip spans 31 days
Major Airline
Major Airline
IAD
11:50p
SEA
9:30a
9h 40m
1 stop
SEA
9:00p
IAD
9:50a
12h 50m
1 stop
Depart: Wed Jan 25 2017 Return: Sun Jan 29 2017 Trip spans 5 days
Alaska Airlines
Alaska Airlines
IAD
2:00p
SEA
8:00p
6h 00m
nonstop
SEA
4:55a
IAD
9:47a
4h 52m
nonstop
Depart: Tue Feb 14 2017 Return: Tue Feb 21 2017 Trip spans 8 days
United
United
IAD
3:15a
SEA
9:09a
5h 54m
nonstop
SEA
5:20p
IAD
10:14p
4h 54m
nonstop
Depart: Tue Mar 14 2017 Return: Tue Apr 4 2017 Trip spans 22 days
Delta
Delta
IAD
1:35p
SEA
9:12p
7h 37m
1 stop
SEA
6:35p
IAD
2:24a
7h 49m
1 stop
Depart: Tue Feb 28 2017 Return: Tue Mar 7 2017 Trip spans 8 days
Major Airline
Major Airline
IAD
8:45p
SEA
4:58p
20h 13m
1 stop
SEA
9:00p
IAD
4:35a
7h 35m
1 stop
Depart: Wed Feb 1 2017 Return: Fri Feb 3 2017 Trip spans 3 days
Alaska Airlines
Alaska Airlines
IAD
2:00p
SEA
8:00p
6h 00m
nonstop
SEA
4:55a
IAD
9:47a
4h 52m
nonstop
Depart: Thu Feb 16 2017 Return: Wed Feb 22 2017 Trip spans 7 days
United
United
IAD
12:40p
SEA
6:34p
5h 54m
nonstop
SEA
5:20p
IAD
10:14p
4h 54m
nonstop
Depart: Fri Apr 28 2017 Return: Sun Apr 30 2017 Trip spans 3 days
Frontier
Frontier
IAD
3:10p
SEA
9:14a
18h 04m
1 stop
SEA
2:59p
IAD
10:05p
7h 06m
1 stop
Depart: Wed May 10 2017 Return: Mon May 15 2017 Trip spans 6 days
Delta
Delta
IAD
3:30a
SEA
11:18a
7h 48m
1 stop
SEA
8:55p
IAD
5:20a
8h 25m
1 stop
Depart: Thu Feb 9 2017 Return: Sat Feb 11 2017 Trip spans 3 days
Alaska Airlines
Alaska Airlines
IAD
2:00p
SEA
8:00p
6h 00m
nonstop
SEA
4:55a
IAD
9:47a
4h 52m
nonstop
Direct flights IAD to SEA on United
Flight # Depart IAD Arrive SEA Sun Mon Tue Wed Thu Fri Sat Valid Between
389 8:15 am 11:09 am Jan 24 - Feb 14
389 8:15 am 11:09 am Jan 25 - Feb 15
389 8:30 am 11:24 am Feb 12 - Feb 12
389 8:30 am 11:24 am Jan 20 - Feb 6
389 8:30 am 11:24 am Feb 10 - Feb 13
389 8:30 am 11:24 am Feb 9 - Feb 9
389 8:30 am 11:24 am Jan 22 - Jan 29
389 8:55 am 11:51 am Feb 26 - Feb 26
389 8:55 am 11:51 am Feb 21 - Mar 7
389 8:55 am 11:51 am Feb 16 - Feb 24
389 8:55 am 11:51 am Feb 27 - Mar 6
326 5:25 pm 8:16 pm Feb 11 - Feb 11
326 5:25 pm 8:18 pm Jan 19 - Feb 14
326 5:25 pm 8:18 pm Jan 20 - Feb 3
326 5:25 pm 8:18 pm Feb 6 - Feb 13
326 5:25 pm 8:18 pm Jan 25 - Feb 15
326 5:25 pm 8:18 pm Jan 28 - Feb 4
326 5:25 pm 8:18 pm Feb 5 - Feb 5
326 5:40 pm 8:32 pm Feb 18 - Feb 18
326 5:40 pm 8:34 pm Feb 26 - Feb 26
326 5:40 pm 8:34 pm Feb 25 - Mar 4
326 5:40 pm 8:34 pm Feb 24 - Mar 3
326 5:40 pm 8:34 pm Feb 22 - Feb 22
326 5:40 pm 8:34 pm Feb 21 - Feb 28
326 5:40 pm 8:34 pm Feb 17 - Feb 20
326 5:40 pm 8:34 pm Feb 16 - Feb 16
326 5:55 pm 8:48 pm Feb 12 - Feb 12
* 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 the 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?
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

Washington
$228
Destination

Seattle
$228
Airlines Airline reviews

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

Overall
7.5
Boarding
7.8
Crew
8.0
Comfort
7.2
Food
6.3
Entertainment
6.1