Washington to Seattle
IADSEA
Fly from Washington to Seattle starting at USD 111 with F9.
Best fare available on Jun 9, 2026.
Limited seats. Better plans. Book before it's gone.
Washington to Seattle cheapest flights this week
13 May
AS
17:38IAD
23:32SEA
Direct$269VIEW DEAL
18 May
F9
11:12IAD
12:49SEA
2 Stop$287VIEW DEAL
19 May
F9
18:37IAD
13:06SEA
2 Stop$245VIEW DEAL
20 May
F9
17:07IAD
17:01SEA
2 Stop$263VIEW DEAL
21 May
F9
09:12IAD
13:36SEA
1 Stop$242VIEW DEAL
9 Jun
F9
09:55IAD
13:35SEA
1 Stop$111VIEW DEAL
10 Jun
F9
09:55IAD
13:35SEA
1 Stop$130VIEW DEAL
12 Jun
F9
20:57IAD
21:26SEA
2 Stop$182VIEW DEAL
2 Apr
01
17:38IAD
23:26SEA
Direct$212VIEW DEAL
Washington to Seattle monthly flight fare trend
May
from USD 242
Jun
from USD 111
Jul
No flights
Aug
No flights
Sep
No flights
Oct
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
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