Baltimore-Washington (BWI) to Seattle / Tacoma (SEA) flight deal in economy from $258

United AirlinesUAUnited Airlines
Round Trip•Economy
United StatesBWI

Baltimore/Washington International Thurgood Marshall Ai

Baltimore-Washington, United States
United StatesSEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States
$402 USD
-36%$258 USD
Verified 14 days ago
Rare Availability
6% of dates checked are available within 10% of the lowest price

Tuesday, August 18th, 2026

7 round-trip options

Returning
Sun, Aug 23, 2026•5 Day Trip
$456 USD
Google Flights
Returning
Mon, Aug 24, 2026•6 Day Trip
$299 USD
Google Flights
Returning
Tue, Aug 25, 2026•7 Day Trip
$325 USD
Google Flights
Returning
Wed, Aug 26, 2026•8 Day Trip
$299 USD
Google Flights
Returning
Sat, Aug 29, 2026•11 Day Trip
$418 USD
Google Flights
Returning
Sun, Aug 30, 2026•12 Day Trip
$363 USD
Google Flights
Returning
Mon, Aug 31, 2026•13 Day Trip
$299 USD
Google Flights