Baltimore-Washington (BWI) to Seattle / Tacoma (SEA) flight deal from $217 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

$434 USD

-50%$217 USD

Verified Dec 1, 2025 at 3:31 AM

December 2025

Today

Mon

Tue

Wed

Thu

Fri

Sat

Sun

1$968 2$698 3$698 4$698 5$698 6$698 7$578 8$578 9$578 10$538 11$488 12$488 13$488 14$388 15$388 16$388 17$368 18$418 19$558 20$638 21$638 22$638 23$558 24$478 25$478 26$638 27$788 28$788 29$638 30$538 31$538 1$398 2$458 3$618 4$458

Limited Availability

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

Monday, December 1st, 2025

6 round-trip options

Returning

Sat, Dec 6, 2025•5 Day Trip

$968 USD

Google Flights

Returning

Sun, Dec 7, 2025•6 Day Trip

$1,683 USD

Google Flights

Returning

Mon, Dec 8, 2025•7 Day Trip

$1,683 USD

Google Flights

Returning

Thu, Dec 11, 2025•10 Day Trip

$3,753 USD

Google Flights

Returning

Fri, Dec 12, 2025•11 Day Trip

$1,938 USD

Google Flights

Returning

Mon, Dec 15, 2025•14 Day Trip

$1,513 USD

Google Flights