Seattle / Tacoma (SEA) to Boston (BOS) flight deal in economy from $152

United AirlinesUAUnited Airlines
One Way•Economy
United StatesSEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States
United StatesBOS

Logan International Airport

Boston, United States
$200 USD
-24%$152 USD
Verified 1 day ago
Extremely Rare Availability
2% of dates checked are available within 10% of the lowest price

Tuesday, July 21st, 2026

No flight details available for this date.