Washington to Seattle
IADSEA
Fly from Washington to Seattle starting at USD 111 with Frontier Airlines.
Best fare available on Jun 9, 2026.
Limited seats. Better plans. Book before it's gone.
Washington to Seattle cheapest flights this week
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
Flights from Washington
Flights from Washington to AtlantaFlights from Washington to AustinFlights from Washington to BostonFlights from Washington to CharlotteFlights from Washington to DenverFlights from Washington to DallasFlights from Washington to DetroitFlights from Washington to NewarkFlights from Washington to Fort LauderdaleFlights from Washington to Honolulu
