SEARCH ONE AND DONE. - Compare hundreds of travel sites at once.
Choose where to book.
Find deals from over 400 airlines worldwide.

Cheap Flights from Washington to Seattle (IAD - SEA)

DepartReturn
1 adult
Note: some airlines charge for infants in laps.
The price shown for each flight will be the average for all passengers including any infants.
Choose Sites to Compare vs. KAYAK all | none

Best fares from IAD to SEA (Found by others)

Sun Mon Tue Wed Thu Fri Sat
        1 $408 2 $408 3 $408
4 $408 5 $411 6 $342 7 $408 8 $339 9 $408 10 $443
11 $408 12 $474 13 $438 14 $339 15 $443 16 $446 17 $503
18 $446 19 $446 20 $443 21 $405 22 $511 23 $584 24 $438
25 $438 26 $408 27 $339 28 $339 29 $342 30 $368 31 $342
KAYAK searches hundreds of sites to find the best rate for your next flight from Washington to Seattle. Get the best flight deal for your Seattle trip!
Here's how it works. Search KAYAK for a flight ticket from Washington to Seattle. Sort, filter and compare results on one web page. Then book your plane ticket direct on the airline or travel agent site of your choice!
Direct flights IAD to SEA on United
Flight # Depart IAD Arrive SEA Sun Mon Tue Wed Thu Fri Sat Valid Between
1633 8:05 am 10:47 am May 11 - Jun 1
1027 8:06 am 10:48 am May 9 - May 12
1081 8:06 am 10:48 am May 14 - May 16
1241 8:06 am 10:48 am May 8 - May 8
1248 8:06 am 10:48 am May 20 - May 20
1251 8:06 am 10:48 am May 19 - May 23
1401 8:06 am 10:48 am May 22 - May 22
1414 8:06 am 10:48 am May 28 - Jun 4
1435 8:06 am 10:48 am May 27 - Jun 3
1521 8:06 am 10:48 am May 21 - May 26
1542 8:06 am 10:48 am May 6 - May 13
1620 8:06 am 10:48 am Jun 2 - Jun 2
282 8:06 am 10:46 am May 29 - May 29
282 8:06 am 10:46 am May 15 - May 15
1192 8:13 am 10:55 am May 2 - May 5
282 8:13 am 10:53 am Apr 20 - May 4
282 8:45 am 11:22 am May 10 - May 31
1415 12:30 pm 3:10 pm May 18 - May 18
357 12:32 pm 3:12 pm May 6 - May 16
357 12:32 pm 3:12 pm May 19 - May 30
357 12:32 pm 3:12 pm Jun 1 - Jun 1
357 12:32 pm 3:12 pm Jun 2 - Jun 4
1051 5:07 pm 7:55 pm May 6 - May 6
1075 5:07 pm 7:55 pm May 10 - May 31
1077 5:07 pm 7:55 pm May 27 - May 28
1123 5:07 pm 7:55 pm May 20 - May 20
1155 5:07 pm 7:55 pm May 21 - May 21
1245 5:07 pm 7:55 pm May 7 - May 14
1483 5:07 pm 7:55 pm May 25 - May 25
326 5:07 pm 7:48 pm May 26 - May 30
326 5:07 pm 7:48 pm May 18 - May 23
326 5:07 pm 7:48 pm Jun 1 - Jun 2
326 5:07 pm 7:48 pm May 13 - May 13
326 5:07 pm 7:48 pm May 8 - May 15
822 5:07 pm 7:48 pm May 16 - May 16
326 5:10 pm 7:51 pm May 5 - May 5
326 5:10 pm 7:51 pm May 4 - May 4
326 5:10 pm 7:51 pm Apr 20 - May 2
822 5:10 pm 7:51 pm May 3 - May 3