Washington (IAD) to Seattle / Tacoma (SEA) flight deal in economy from $154

Delta Air LinesDLDelta Air Lines
One Way•Economy
United StatesIAD

Washington Dulles International Airport

Washington, United States
United StatesSEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States
$300 USD
-49%$154 USD
Verified 2 days ago
Rare Availability
5% of dates checked are available within 10% of the lowest price

Monday, October 26th, 2026

No flight details available for this date.