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: Sun Dec 10 2017 Return: Wed Dec 13 2017 Trip spans 4 days
Frontier
Frontier
DCA
12:00a
SEA
11:37p
23h 37m
1 stop
SEA
12:00a
DCA
10:30p
22h 30m
1 stop
Depart: Sun Dec 10 2017 Return: Mon Dec 11 2017 Trip spans 2 days
Multiple Airlines
Multiple Airlines
DCA
12:00a
SEA
11:37p
23h 37m
1 stop
SEA
12:00a
DCA
10:20a
10h 20m
1 stop
Depart: Tue Nov 28 2017 Return: Tue Dec 5 2017 Trip spans 8 days
Delta
Delta
DCA
12:00a
SEA
9:54a
9h 54m
1 stop
SEA
12:00a
DCA
6:46a
6h 46m
1 stop
Depart: Thu Nov 30 2017 Return: Sun Dec 3 2017 Trip spans 4 days
Alaska Airlines
Alaska Airlines
IAD
12:00a
SEA
5:57a
5h 57m
nonstop
SEA
12:00a
IAD
4:52a
4h 52m
nonstop
Depart: Wed Jan 10 2018 Return: Sat Jan 13 2018 Trip spans 4 days
Frontier
Frontier
DCA
12:00a
SEA
12:32p
12h 32m
1 stop
SEA
12:00a
DCA
3:53p
15h 53m
1 stop
Depart: Tue Dec 5 2017 Return: Mon Dec 11 2017 Trip spans 7 days
Frontier
Frontier
DCA
12:00a
SEA
7:05p
19h 05m
1 stop
SEA
12:00a
DCA
10:32p
22h 32m
1 stop
Depart: Mon Jan 8 2018 Return: Tue Jan 9 2018 Trip spans 2 days
Frontier
Frontier
DCA
12:00a
SEA
12:32p
12h 32m
1 stop
SEA
12:00a
DCA
5:59p
17h 59m
1 stop
Depart: Tue May 1 2018 Return: Mon May 7 2018 Trip spans 7 days
Multiple Airlines
Multiple Airlines
IAD
12:00a
SEA
5:55a
5h 55m
nonstop
SEA
12:00a
IAD
8:00a
8h 00m
1 stop
Depart: Fri Feb 2 2018 Return: Tue Feb 6 2018 Trip spans 5 days
Frontier
Frontier
DCA
12:00a
SEA
11:41p
23h 41m
1 stop
SEA
12:00a
DCA
5:59p
17h 59m
1 stop
Depart: Tue Nov 28 2017 Return: Wed Nov 29 2017 Trip spans 2 days
Multiple Airlines
Multiple Airlines
DCA
12:00a
SEA
9:54a
9h 54m
1 stop
SEA
12:00a
DCA
8:00a
8h 00m
1 stop
Depart: Thu Dec 14 2017 Return: Sun Dec 17 2017 Trip spans 4 days
Alaska Airlines
Alaska Airlines
IAD
12:00a
SEA
6:05a
6h 05m
nonstop
SEA
12:00a
IAD
4:52a
4h 52m
nonstop
Depart: Wed Feb 28 2018 Return: Tue Mar 6 2018 Trip spans 7 days
Frontier
Frontier
DCA
12:00a
SEA
12:32p
12h 32m
1 stop
SEA
12:00a
DCA
6:09p
18h 09m
1 stop
Depart: Thu May 17 2018 Return: Tue Jun 5 2018 Trip spans 20 days
Multiple Airlines
Multiple Airlines
DCA
12:00a
SEA
9:10a
9h 10m
1 stop
SEA
12:00a
DCA
8:28a
8h 28m
1 stop
Depart: Thu Mar 1 2018 Return: Tue Mar 6 2018 Trip spans 6 days
Frontier
Frontier
DCA
12:00a
SEA
10:13a
10h 13m
1 stop
SEA
12:00a
DCA
6:09p
18h 09m
1 stop
Depart: Thu Nov 23 2017 Return: Fri Nov 24 2017 Trip spans 2 days
Delta
Delta
IAD
12:00a
SEA
9:10a
9h 10m
1 stop
SEA
12:00a
IAD
6:12a
6h 12m
1 stop
Depart: Mon Apr 16 2018 Return: Mon Apr 23 2018 Trip spans 8 days
Frontier
Frontier
IAD
12:00a
SEA
5:53p
17h 53m
1 stop
SEA
12:00a
IAD
8:02a
8h 02m
1 stop
Depart: Sun Dec 10 2017 Return: Mon Dec 18 2017 Trip spans 9 days
Alaska Airlines
Alaska Airlines
IAD
12:00a
SEA
6:05a
6h 05m
nonstop
SEA
12:00a
IAD
4:52a
4h 52m
nonstop
Depart: Fri Dec 15 2017 Return: Mon Dec 18 2017 Trip spans 4 days
Alaska Airlines
Alaska Airlines
IAD
12:00a
SEA
6:05a
6h 05m
nonstop
SEA
12:00a
IAD
4:52a
4h 52m
nonstop
Depart: Tue Apr 3 2018 Return: Wed Apr 4 2018 Trip spans 2 days
Frontier
Frontier
DCA
12:00a
SEA
10:13a
10h 13m
1 stop
SEA
12:00a
DCA
10:32p
22h 32m
1 stop
Depart: Wed May 2 2018 Return: Tue May 15 2018 Trip spans 14 days
Frontier
Frontier
DCA
12:00a
SEA
4:50p
16h 50m
1 stop
SEA
12:00a
DCA
8:28a
8h 28m
1 stop
Direct flights WAS to SEA on United
Flight # Depart IAD Arrive SEA Sun Mon Tue Wed Thu Fri Sat Valid Between
389 8:39 am 11:31 am Nov 22 - Nov 29
389 8:39 am 11:31 am Nov 23 - Nov 28
389 8:39 am 11:31 am Nov 30 - Nov 30
389 8:39 am 11:31 am Dec 1 - Dec 1
389 8:39 am 11:29 am Dec 2 - Dec 9
389 8:39 am 11:31 am Dec 3 - Dec 3
389 8:39 am 11:31 am Dec 4 - Dec 11
389 8:39 am 11:31 am Dec 5 - Dec 15
389 8:39 am 11:31 am Dec 6 - Dec 6
389 8:39 am 11:31 am Dec 7 - Dec 7
389 8:39 am 11:31 am Dec 13 - Dec 18
389 8:39 am 11:31 am Dec 16 - Dec 19
389 8:39 am 11:30 am Dec 20 - Dec 20
389 8:39 am 11:28 am Dec 21 - Jan 4
389 8:39 am 11:30 am Dec 24 - Dec 24
389 8:39 am 11:28 am Dec 22 - Dec 29
357 12:31 pm 3:24 pm Dec 3 - Dec 17
357 12:45 pm 3:39 pm Dec 20 - Dec 29
357 12:45 pm 3:41 pm Dec 24 - Dec 31
357 12:45 pm 3:39 pm Dec 25 - Dec 26
357 1:04 pm 3:58 pm Dec 23 - Jan 6
326 5:35 pm 8:31 pm Dec 20 - Jan 3
326 5:35 pm 8:31 pm Dec 21 - Dec 29
326 5:35 pm 8:31 pm Dec 23 - Dec 26
326 5:35 pm 8:31 pm Dec 24 - Dec 31
326 5:35 pm 8:31 pm Dec 25 - Dec 25
326 5:50 pm 8:43 pm Nov 28 - Nov 28
326 5:50 pm 8:43 pm Nov 29 - Dec 13
326 5:50 pm 8:43 pm Nov 30 - Nov 30
326 5:50 pm 8:43 pm Dec 1 - Dec 7
326 5:50 pm 8:43 pm Dec 2 - Dec 16
326 5:50 pm 8:43 pm Dec 3 - Dec 17
326 5:50 pm 8:43 pm Dec 4 - Dec 11
326 5:50 pm 8:43 pm Dec 5 - Dec 5
326 5:50 pm 8:43 pm Dec 8 - Dec 8
326 5:50 pm 8:43 pm Dec 12 - Dec 12
326 5:50 pm 8:43 pm Dec 14 - Dec 18
326 5:50 pm 8:43 pm Dec 19 - Dec 19
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

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Here's why:

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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
only $242
only $222
Destination

Seattle
$222