Washington to Seattle
IADSEA
Fly from Washington to Seattle starting at USD 214 with AS.
Best fare available on Apr 25, 2026.
Limited seats. Better plans. Book before it's gone.
Washington to Seattle cheapest flights this week
20 Apr
MX
09:15IAD
--:--SEA
3 Stop$310VIEW DEAL
23 Apr
F9
06:10IAD
--:--SEA
2 Stop$232VIEW DEAL
24 Apr
F9
13:08IAD
--:--SEA
2 Stop$272VIEW DEAL
25 Apr
AS
09:00IAD
--:--SEA
Direct$214VIEW DEAL
27 Apr
AS
07:10IAD
--:--SEA
Direct$229VIEW DEAL
29 Apr
F9
06:20IAD
--:--SEA
2 Stop$218VIEW DEAL
1 May
F9
15:08IAD
--:--SEA
2 Stop$277VIEW DEAL
Washington to Seattle monthly flight fare trend
Apr
from USD 214
May
from USD 277
Jun
No flights
Jul
No flights
Aug
No flights
Sep
No flights
Airport Details
Origin
Washington
Washington Dulles International Airport (IAD)
Dulles, IAD
Zone
New York
Elev
312 ft
Destination
Seattle
Seattle–Tacoma International Airport (SEA)
Seattle, SEA
Zone
Los Angeles
Elev
433 ft
