Seattle / Tacoma (SEA) to Washington (IAD) flight deal in economy from $148

Alaska Airlines, Inc.ASAlaska Airlines, Inc.
One Way•Economy
United StatesSEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States
United StatesIAD

Washington Dulles International Airport

Washington, United States
$242 USD
-39%$148 USD
Verified 2 days ago
Rare Availability
7% of dates checked are available within 10% of the lowest price

Sunday, August 2nd, 2026

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