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, December 15th, 2026

7 round-trip options

Returning
Sun, Dec 20, 2026•5 Day Trip
$557 USD
Google Flights
Returning
Wed, Dec 23, 2026•8 Day Trip
$447 USD
Google Flights
Returning
Thu, Dec 24, 2026•9 Day Trip
$376 USD
Google Flights
Returning
Sat, Dec 26, 2026•11 Day Trip
$545 USD
Google Flights
Returning
Sun, Dec 27, 2026•12 Day Trip
$426 USD
Google Flights
Returning
Mon, Dec 28, 2026•13 Day Trip
$405 USD
Google Flights
Returning
Tue, Dec 29, 2026•14 Day Trip
$376 USD
Google Flights