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, September 8th, 2026

6 round-trip options

Returning
Sun, Sep 13, 2026•5 Day Trip
$363 USD
Google Flights
Returning
Tue, Sep 15, 2026•7 Day Trip
$299 USD
Google Flights
Returning
Wed, Sep 16, 2026•8 Day Trip
$304 USD
Google Flights
Returning
Thu, Sep 17, 2026•9 Day Trip
$299 USD
Google Flights
Returning
Sun, Sep 20, 2026•12 Day Trip
$299 USD
Google Flights
Returning
Mon, Sep 21, 2026•13 Day Trip
$299 USD
Google Flights