Southwest® flights from Baltimore/Washington to Seattle/Tacoma from $204

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Low fares from Baltimore/Washington to Seattle/Tacoma

$

Baltimore/Washington (BWI)to

Seattle/Tacoma (SEA)
Depart: 12/20/2026

One-way

Basic

From
$204
Seen: 20 hrs ago

Baltimore/Washington (BWI)to

Seattle/Tacoma (SEA)
Depart: 12/06/2026

One-way

Basic

From
$204
Seen: 12 hrs ago

Baltimore/Washington (BWI)to

Seattle/Tacoma (SEA)
Depart: 12/08/2026

One-way

Basic

From
$204
Seen: 9 hrs ago

Baltimore/Washington (BWI)to

Seattle/Tacoma (SEA)
Depart: 12/12/2026

One-way

Basic

From
$204
Seen: 8 hrs ago

Baltimore/Washington (BWI)to

Seattle/Tacoma (SEA)
Depart: 01/19/2027

One-way

Basic

From
$204
Seen: 8 hrs ago

Baltimore/Washington (BWI)to

Seattle/Tacoma (SEA)
Depart: 12/09/2026

One-way

Basic

From
$204
Seen: 3 hrs ago

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Explore flights from Baltimore/Washington to Seattle/Tacoma

Nov 2026
From$239*
Seen: 21 hrs ago
One Way/Basic
Dec 2026
From$204*
Seen: 8 hrs ago
One Way/Basic
Jan 2027
From$204*
Seen: 1 hour ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $204
cmp-daily-histogram-bars-legend-max-price-aria-label $347
Displaying fares for November-2026
  • BWI–SEA, 11/11/2026: From $296
    11

    Wed

    NOV

  • BWI–SEA, 11/12/2026: From $342
    12

    Thu

  • BWI–SEA, 11/13/2026: From $342
    13

    Fri

  • BWI–SEA, 11/14/2026: From $296
    14

    Sat

  • BWI–SEA, 11/15/2026: From $347
    15

    Sun

  • BWI–SEA: cmp-view-offers-disclaimer. Find Offers
    16

    Mon

  • BWI–SEA, 11/17/2026: From $296
    17

    Tue

  • BWI–SEA, 11/18/2026: From $239
    18

    Wed

  • BWI–SEA: cmp-view-offers-disclaimer. Find Offers
    19

    Thu

  • BWI–SEA: cmp-view-offers-disclaimer. Find Offers
    20

    Fri

  • BWI–SEA: cmp-view-offers-disclaimer. Find Offers
    21

    Sat

  • BWI–SEA: cmp-view-offers-disclaimer. Find Offers
    22

    Sun

  • BWI–SEA, 11/23/2026: From $239
    23

    Mon

  • BWI–SEA, 11/24/2026: From $239
    24

    Tue

  • BWI–SEA, 11/25/2026: From $239
    25

    Wed

  • BWI–SEA, 11/26/2026: From $239
    26

    Thu

  • BWI–SEA: cmp-view-offers-disclaimer. Find Offers
    27

    Fri

  • BWI–SEA: cmp-view-offers-disclaimer. Find Offers
    28

    Sat

  • BWI–SEA: cmp-view-offers-disclaimer. Find Offers
    29

    Sun

  • BWI–SEA: cmp-view-offers-disclaimer. Find Offers
    30

    Mon

  • BWI–SEA, 12/01/2026: From $280
    01

    Tue

    DEC

  • BWI–SEA, 12/02/2026: From $209
    02

    Wed

  • BWI–SEA, 12/03/2026: From $209
    03

    Thu

  • BWI–SEA, 12/04/2026: From $204
    04

    Fri

  • BWI–SEA, 12/05/2026: From $204
    05

    Sat

  • BWI–SEA, 12/06/2026: From $204
    06

    Sun

  • BWI–SEA: cmp-view-offers-disclaimer. Find Offers
    07

    Mon

  • BWI–SEA, 12/08/2026: From $204
    08

    Tue

  • BWI–SEA, 12/09/2026: From $204
    09

    Wed

  • BWI–SEA, 12/10/2026: From $204
    10

    Thu

    • Range$204-$347

    *Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply. Modifying this information may result in a different fare. To find the most updated fare, please visit Southwest.com. Fares listed are Basic, which are subject to additional terms and conditions.

    Flight Details

    Departing from:
    Balt./Wash. International Airport
    Arriving at:
    Seattle/Tacoma International Airport
    Average flight time:
    5 hours 50 minutes
    Distance:
    2335 miles

    Questions we hear the most

    The average flight time from Baltimore/Washington to Seattle/Tacoma is 5 hours 50 minutes.
    There are 142 weekly flights from Baltimore/Washington to Seattle/Tacoma on Southwest Airlines.
    Yes, Southwest flies nonstop from Baltimore/Washington to Seattle/Tacoma once per day from Monday through Friday.
    To find the lowest fares by day and time to fly Baltimore/Washington to Seattle/Tacoma with Southwest, check out our Low Fare Calendar.
    You can rent a car at Seattle/Tacoma International Airport book yours with your flight.
    Yes! Flights from Baltimore/Washington to Seattle/Tacoma—or from here or there to anywhere—can be changed with no change fees. Fare difference may apply.
    Check the status of your upcoming Southwest flight.
    Check out the Southwest Airlines® Help Center for answers about everything Southwest.

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