Find Cheap Flights from Washington to Seattle/Tacoma Intl (WAS - 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 to Seattle/Tacoma Intl

(Round-trip)
Depart: Tue Nov 7 2017 Return: Sun Nov 12 2017 Trip spans 6 days
Frontier
Frontier
DCA
12:00a
SEA
8:59p
20h 59m
1 stop
SEA
12:00a
DCA
5:45p
17h 45m
1 stop
Depart: Sun Dec 3 2017 Return: Wed Dec 6 2017 Trip spans 4 days
Multiple Airlines
Multiple Airlines
DCA
12:00a
SEA
4:55p
16h 55m
1 stop
SEA
12:00a
DCA
8:00a
8h 00m
1 stop
Depart: Tue Jan 16 2018 Return: Mon Jan 22 2018 Trip spans 7 days
Delta
Delta
DCA
12:00a
SEA
10:06a
10h 06m
1 stop
SEA
12:00a
DCA
7:02a
7h 02m
1 stop
Depart: Thu Feb 8 2018 Return: Mon Feb 12 2018 Trip spans 5 days
American Airlines
American Airlines
DCA
12:00a
SEA
8:03a
8h 03m
1 stop
SEA
12:00a
DCA
7:31a
7h 31m
1 stop
Depart: Sat Nov 4 2017 Return: Tue Nov 7 2017 Trip spans 4 days
United
United
IAD
12:00a
SEA
5:50a
5h 50m
nonstop
SEA
12:00a
IAD
4:49a
4h 49m
nonstop
Depart: Thu Nov 9 2017 Return: Tue Nov 14 2017 Trip spans 6 days
Alaska Airlines
Alaska Airlines
IAD
12:00a
SEA
5:57a
5h 57m
nonstop
SEA
12:00a
IAD
4:56a
4h 56m
nonstop
Depart: Tue Dec 5 2017 Return: Thu Dec 7 2017 Trip spans 3 days
Frontier
Frontier
DCA
12:00a
SEA
7:05p
19h 05m
1 stop
SEA
12:00a
DCA
5:45p
17h 45m
1 stop
Depart: Thu Nov 2 2017 Return: Mon Nov 6 2017 Trip spans 5 days
Multiple Airlines
Multiple Airlines
DCA
12:00a
SEA
10:32a
10h 32m
1 stop
SEA
12:00a
DCA
7:55a
7h 55m
1 stop
Depart: Fri Jan 19 2018 Return: Tue Jan 23 2018 Trip spans 5 days
Delta
Delta
DCA
12:00a
SEA
7:45a
7h 45m
1 stop
SEA
12:00a
DCA
6:42a
6h 42m
1 stop
Depart: Tue Oct 24 2017 Return: Fri Oct 27 2017 Trip spans 4 days
Frontier
Frontier
DCA
12:00a
SEA
6:57p
18h 57m
1 stop
SEA
12:00a
DCA
10:24p
22h 24m
1 stop
Depart: Sat Dec 2 2017 Return: Wed Dec 6 2017 Trip spans 5 days
Multiple Airlines
Multiple Airlines
DCA
12:00a
SEA
8:31a
8h 31m
1 stop
SEA
12:00a
DCA
8:00a
8h 00m
1 stop
Depart: Fri Jan 19 2018 Return: Tue Jan 23 2018 Trip spans 5 days
Delta
Delta
IAD
12:00a
SEA
9:10a
9h 10m
1 stop
SEA
12:00a
IAD
6:48a
6h 48m
1 stop
Depart: Thu Nov 2 2017 Return: Mon Nov 6 2017 Trip spans 5 days
Frontier
Frontier
DCA
12:00a
SEA
11:50p
23h 50m
1 stop
SEA
12:00a
DCA
10:30p
22h 30m
1 stop
Depart: Fri Mar 2 2018 Return: Mon Mar 5 2018 Trip spans 4 days
United
United
IAD
12:00a
SEA
5:35a
5h 35m
nonstop
SEA
12:00a
IAD
4:48a
4h 48m
nonstop
Depart: Thu Nov 2 2017 Return: Tue Nov 7 2017 Trip spans 6 days
American Airlines
American Airlines
IAD
12:00a
SEA
9:32a
9h 32m
1 stop
SEA
12:00a
IAD
9:15a
9h 15m
1 stop
Depart: Wed Jan 24 2018 Return: Wed Feb 7 2018 Trip spans 15 days
Delta
Delta
DCA
12:00a
SEA
7:53a
7h 53m
1 stop
SEA
12:00a
DCA
6:44a
6h 44m
1 stop
Depart: Mon Oct 30 2017 Return: Thu Nov 2 2017 Trip spans 4 days
Multiple Airlines
Multiple Airlines
DCA
12:00a
SEA
4:50p
16h 50m
1 stop
SEA
12:00a
DCA
5:45p
17h 45m
1 stop
Depart: Fri Feb 2 2018 Return: Tue Feb 6 2018 Trip spans 5 days
Delta
Delta
IAD
12:00a
SEA
9:10a
9h 10m
1 stop
SEA
12:00a
IAD
9:52a
9h 52m
1 stop
Depart: Mon Oct 30 2017 Return: Thu Nov 2 2017 Trip spans 4 days
Multiple Airlines
Multiple Airlines
DCA
12:00a
SEA
4:50p
16h 50m
1 stop
SEA
12:00a
DCA
5:45p
17h 45m
1 stop
Depart: Wed Nov 1 2017 Return: Tue Nov 7 2017 Trip spans 7 days
Frontier
Frontier
DCA
12:00a
SEA
7:59a
7h 59m
1 stop
SEA
12:00a
DCA
5:45p
17h 45m
1 stop
Direct flights WAS to SEA on United
Flight # Depart IAD Arrive SEA Sun Mon Tue Wed Thu Fri Sat Valid Between
389 8:35 am 11:17 am Oct 16 - Oct 23
389 8:35 am 11:17 am Oct 19 - Oct 26
389 8:35 am 11:17 am Oct 20 - Oct 25
389 8:35 am 11:17 am Oct 21 - Oct 28
389 8:35 am 11:17 am Oct 22 - Oct 22
389 8:35 am 11:17 am Oct 27 - Oct 27
389 8:39 am 11:31 am Oct 29 - Nov 1
389 8:39 am 11:31 am Oct 30 - Oct 31
389 8:39 am 11:31 am Nov 2 - Nov 3
389 8:39 am 11:29 am Nov 4 - Nov 4
389 8:39 am 11:31 am Nov 5 - Nov 5
389 8:39 am 11:31 am Nov 6 - Nov 12
389 8:39 am 11:31 am Nov 7 - Nov 7
389 8:39 am 11:31 am Nov 10 - Nov 10
389 8:39 am 11:29 am Nov 11 - Nov 18
389 8:39 am 11:31 am Nov 13 - Nov 16
389 8:39 am 11:31 am Nov 14 - Nov 14
389 8:39 am 11:31 am Nov 15 - Nov 29
389 8:39 am 11:31 am Nov 17 - Nov 23
357 12:30 pm 3:23 pm Oct 30 - Oct 30
357 12:31 pm 3:24 pm Oct 29 - Oct 29
357 12:31 pm 3:22 pm Nov 5 - Nov 5
357 12:31 pm 3:24 pm Nov 12 - Nov 19
357 12:34 pm 3:27 pm Oct 31 - Oct 31
357 12:34 pm 3:25 pm Nov 1 - Nov 3
357 12:34 pm 3:25 pm Nov 6 - Nov 17
357 12:34 pm 3:27 pm Nov 7 - Nov 21
357 12:34 pm 3:27 pm Nov 20 - Nov 20
357 12:35 pm 3:16 pm Oct 8 - Oct 22
357 12:35 pm 3:16 pm Oct 9 - Oct 23
357 12:35 pm 3:16 pm Oct 24 - Oct 24
357 12:35 pm 3:16 pm Oct 25 - Oct 27
326 5:23 pm 8:10 pm Oct 16 - Oct 23
326 5:23 pm 8:10 pm Oct 17 - Oct 27
326 5:23 pm 8:10 pm Oct 21 - Oct 21
326 5:23 pm 8:10 pm Oct 22 - Oct 22
326 6:30 pm 9:23 pm Oct 29 - Oct 29
326 6:30 pm 9:23 pm Oct 30 - Oct 30
326 6:30 pm 9:23 pm Oct 31 - Oct 31
326 6:40 pm 9:33 pm Nov 4 - Nov 4
326 6:40 pm 9:33 pm Nov 5 - Nov 10
326 6:40 pm 9:33 pm Nov 6 - Nov 16
326 6:40 pm 9:33 pm Nov 7 - Nov 14
326 6:40 pm 9:33 pm Nov 8 - Nov 22
326 6:40 pm 9:33 pm Nov 11 - Nov 18
326 6:40 pm 9:33 pm Nov 12 - Nov 19
326 6:40 pm 9:33 pm Nov 17 - Nov 17
326 6:40 pm 9:33 pm Nov 20 - Nov 20
326 6:40 pm 9:33 pm Nov 1 - Nov 1
326 6:40 pm 9:33 pm Nov 2 - Nov 3
* 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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Airports
Origin

Washington
only $274
only $236
Destination

Seattle
$236
Airlines Airline reviews

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

Overall
7.5
Boarding
7.7
Crew
8.0
Comfort
7.3
Food
6.7
Entertainment
6.3