Washington (IAD) to Seattle / Tacoma (SEA) flight deal in economy from $209

United AirlinesUAUnited Airlines
One Way•Economy
United StatesIAD

Washington Dulles International Airport

Washington, United States
United StatesSEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States
$272 USD
-23%$209 USD
Verified 28 days ago
Fair Availability
38% of dates checked are available within 10% of the lowest price

Wednesday, June 3rd, 2026

No flight details available for this date.