Seattle / Tacoma (SEA) to Washington (IAD) flight deal in economy from $219
SEASeattle–Tacoma International Airport
Seattle / Tacoma, United States
IADWashington Dulles International Airport
Washington, United States
$266 USD
-18%$219 USD
Verified about 4 hours agoNovember 2026
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Good Availability
46% of dates checked are available within 10% of the lowest price
Wednesday, November 18th, 2026
Outbound Flights
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