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
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: Sat Apr 22 2017 Return: Mon Apr 24 2017 Trip spans 3 days
Major Airline
Major Airline
IAD
6:19a
SEA
5:46p
11h 27m
1 stop
SEA
12:50p
IAD
5:15a
16h 25m
1 stop
Depart: Tue Apr 18 2017 Return: Tue Apr 25 2017 Trip spans 8 days
American Airlines
American Airlines
IAD
1:05a
SEA
9:03a
7h 58m
1 stop
SEA
6:20p
IAD
3:17a
8h 57m
1 stop
Depart: Wed Sep 6 2017 Return: Wed Sep 13 2017 Trip spans 8 days
Delta
Delta
IAD
3:30a
SEA
11:20a
7h 50m
1 stop
SEA
9:15a
IAD
4:08p
6h 53m
1 stop
Depart: Wed Apr 26 2017 Return: Mon May 1 2017 Trip spans 6 days
Frontier
Frontier
IAD
2:55p
SEA
9:15a
18h 20m
1 stop
SEA
2:35p
IAD
10:19p
7h 44m
1 stop
Depart: Wed May 3 2017 Return: Mon May 8 2017 Trip spans 6 days
JetBlue
JetBlue
IAD
2:38a
SEA
11:25a
8h 47m
1 stop
SEA
9:16a
IAD
1:50a
16h 34m
1 stop
Depart: Sun Apr 23 2017 Return: Mon Apr 24 2017 Trip spans 2 days
United
United
IAD
4:15a
SEA
9:57a
5h 42m
nonstop
SEA
6:40p
IAD
11:34p
4h 54m
nonstop
Depart: Wed Aug 16 2017 Return: Thu Aug 17 2017 Trip spans 2 days
Alaska Airlines
Alaska Airlines
IAD
1:20p
SEA
7:20p
6h 00m
nonstop
SEA
4:10a
IAD
9:12a
5h 02m
nonstop
Depart: Tue Sep 26 2017 Return: Tue Oct 3 2017 Trip spans 8 days
Virgin America
Virgin America
IAD
5:00a
SEA
4:30p
11h 30m
1 stop
SEA
2:10p
IAD
12:45a
10h 35m
1 stop
Depart: Mon Apr 24 2017 Return: Thu Apr 27 2017 Trip spans 4 days
Major Airline
Major Airline
IAD
9:10a
SEA
5:25a
20h 15m
1 stop
SEA
11:05p
IAD
6:49a
7h 44m
1 stop
Depart: Tue Apr 25 2017 Return: Wed May 10 2017 Trip spans 16 days
Major Airline
Major Airline
IAD
2:00a
SEA
6:58p
16h 58m
1 stop
SEA
10:24a
IAD
6:15p
7h 51m
1 stop
Depart: Fri Apr 28 2017 Return: Fri May 5 2017 Trip spans 8 days
Major Airline
Major Airline
IAD
10:55a
SEA
5:15a
18h 20m
1 stop
SEA
5:16a
IAD
9:50p
16h 34m
1 stop
Depart: Wed Apr 12 2017 Return: Fri Apr 21 2017 Trip spans 10 days
American Airlines
American Airlines
IAD
1:05a
SEA
9:03a
7h 58m
1 stop
SEA
8:15p
IAD
3:58a
7h 43m
1 stop
Depart: Fri Sep 29 2017 Return: Mon Oct 2 2017 Trip spans 4 days
Delta
Delta
IAD
3:30a
SEA
11:20a
7h 50m
1 stop
SEA
7:20p
IAD
1:56a
6h 36m
1 stop
Depart: Sat Apr 29 2017 Return: Mon May 1 2017 Trip spans 3 days
Frontier
Frontier
IAD
2:55p
SEA
9:15a
18h 20m
1 stop
SEA
2:35p
IAD
10:19p
7h 44m
1 stop
Depart: Wed Apr 19 2017 Return: Fri Apr 21 2017 Trip spans 3 days
American Airlines
American Airlines
IAD
9:49a
SEA
7:57p
10h 08m
1 stop
SEA
8:15p
IAD
3:58a
7h 43m
1 stop
Depart: Sun Apr 30 2017 Return: Mon May 1 2017 Trip spans 2 days
Frontier
Frontier
IAD
2:55p
SEA
9:15a
18h 20m
1 stop
SEA
2:35p
IAD
10:19p
7h 44m
1 stop
Depart: Mon May 1 2017 Return: Thu May 4 2017 Trip spans 4 days
Major Airline
Major Airline
IAD
10:55a
SEA
5:15a
18h 20m
1 stop
SEA
2:55a
IAD
6:19p
15h 24m
1 stop
Depart: Mon Aug 28 2017 Return: Wed Aug 30 2017 Trip spans 3 days
JetBlue
JetBlue
IAD
2:25a
SEA
11:32a
9h 07m
1 stop
SEA
3:00a
IAD
11:08a
8h 08m
1 stop
Depart: Thu Sep 14 2017 Return: Tue Sep 19 2017 Trip spans 6 days
Delta
Delta
IAD
3:30a
SEA
11:20a
7h 50m
1 stop
SEA
7:35a
IAD
4:44p
9h 09m
1 stop
Depart: Sat May 6 2017 Return: Tue May 9 2017 Trip spans 4 days
American Airlines
American Airlines
IAD
2:55p
SEA
11:39p
8h 44m
1 stop
SEA
5:30a
IAD
3:26p
9h 56m
1 stop
Direct flights IAD to SEA on United
Flight # Depart IAD Arrive SEA Sun Mon Tue Wed Thu Fri Sat Valid Between
389 8:14 am 10:56 am Apr 9 - Apr 9
389 8:15 am 10:57 am Apr 23 - May 4
389 8:15 am 10:57 am Apr 4 - Apr 21
389 8:30 am 11:14 am Apr 16 - Apr 16
389 8:35 am 11:19 am May 7 - May 21
389 8:35 am 11:19 am May 5 - May 5
1053 12:30 pm 3:14 pm Apr 24 - May 4
1769 4:05 pm 6:49 pm Apr 29 - Apr 29
1769 4:05 pm 6:46 pm May 5 - Jun 7
1769 4:05 pm 6:49 pm Apr 30 - Apr 30
1769 4:05 pm 6:46 pm May 6 - May 20
1769 4:14 pm 6:58 pm Apr 21 - Apr 23
1769 4:14 pm 6:58 pm Apr 8 - Apr 15
1769 4:14 pm 6:58 pm Apr 5 - Apr 20
1769 4:14 pm 6:58 pm Apr 4 - Apr 18
1769 4:14 pm 6:56 pm Apr 22 - Apr 22
1769 5:05 pm 7:59 pm Apr 28 - Apr 28
10 5:55 pm 8:49 pm Apr 4 - Apr 10
10 5:55 pm 8:49 pm Apr 11 - Apr 11
10 5:55 pm 8:49 pm Apr 28 - Apr 28
10 5:55 pm 8:49 pm Apr 29 - Apr 30
10 5:55 pm 8:49 pm Apr 24 - May 3
10 5:55 pm 8:49 pm Apr 12 - Apr 23
326 5:59 pm 8:53 pm May 5 - May 26
326 6:09 pm 9:03 pm May 7 - May 21
10 6:56 pm 9:50 pm Apr 27 - May 4
326 7:00 pm 9:54 pm May 6 - May 20
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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Airports
Origin

Washington
$270
Destination

Seattle
$270
Airlines Airline reviews

86 travelers who booked a flight from Washington to Seattle rated their chosen airlines with an average of 7.3.

Overall
7.6
Boarding
7.9
Crew
8.1
Comfort
7.3
Food
6.5
Entertainment
6.3