Baltimore-Washington (BWI) to Seattle / Tacoma (SEA) cheap flight deal from $277 USD in economy class

ASAlaska Airlines, Inc.

Round Trip

•

Economy

BWI

Baltimore/Washington International Thurgood Marshall Ai

Baltimore-Washington, United States

SEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

$446 USD

-38%$277 USD

Verified about 21 hours ago

July 2025

Today

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Tue

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30 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16$673 17$673 18$673 19$673 20$673 21$673 22$673 23$512 24$603 25$512 26$512 27$512 28$512 29$512 30$408 31$518 1$518 2$457 3$408

Rare Availability

19% of dates checked are available within 10% of the lowest price

Tuesday, July 29th, 2025

10 round-trip options

Returning

Sun, Aug 3, 2025•5 Day Trip

$602 USD

Google Flights

Returning

Mon, Aug 4, 2025•6 Day Trip

$602 USD

Google Flights

Returning

Tue, Aug 5, 2025•7 Day Trip

$553 USD

Google Flights

Returning

Wed, Aug 6, 2025•8 Day Trip

$512 USD

Google Flights

Returning

Thu, Aug 7, 2025•9 Day Trip

$552 USD

Google Flights

Returning

Fri, Aug 8, 2025•10 Day Trip

$602 USD

Google Flights

Returning

Sat, Aug 9, 2025•11 Day Trip

$663 USD

Google Flights

Returning

Sun, Aug 10, 2025•12 Day Trip

$738 USD

Google Flights

Returning

Mon, Aug 11, 2025•13 Day Trip

$663 USD

Google Flights

Returning

Tue, Aug 12, 2025•14 Day Trip

$552 USD

Google Flights