Southwest® flights from Seattle/Tacoma to Baltimore/Washington from $129

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Low fares from Seattle/Tacoma to Baltimore/Washington

$

Seattle/Tacoma (SEA)to

Baltimore/Washington (BWI)
Depart: 01/06/2027

One-way

Basic

From
$129
Seen: 10 hrs ago

Seattle/Tacoma (SEA)to

Baltimore/Washington (BWI)
Depart: 12/14/2026

One-way

Basic

From
$129
Seen: 16 hrs ago

Seattle/Tacoma (SEA)to

Baltimore/Washington (BWI)
Depart: 12/12/2026

One-way

Basic

From
$129
Seen: 5 hrs ago

Seattle/Tacoma (SEA)to

Baltimore/Washington (BWI)
Depart: 01/20/2027

One-way

Basic

From
$129
Seen: 27 minutes ago

Seattle/Tacoma (SEA)to

Baltimore/Washington (BWI)
Depart: 12/16/2026

One-way

Basic

From
$129
Seen: 2 hrs ago

Seattle/Tacoma (SEA)to

Baltimore/Washington (BWI)
Depart: 12/15/2026

One-way

Basic

From
$134
Seen: 13 hrs ago

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Explore flights from Seattle/Tacoma to Baltimore/Washington

Oct 2026
From$224*
Seen: 12 hrs ago
One Way/Basic
Nov 2026
From$134*
Seen: 7 hrs ago
One Way/Basic
Dec 2026
From$129*
Seen: 5 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $134
cmp-daily-histogram-bars-legend-max-price-aria-label $263
Displaying fares for October-2026
  • SEA–BWI, 10/22/2026: From $263
    22

    Thu

    OCT

  • SEA–BWI, 10/23/2026: From $263
    23

    Fri

  • SEA–BWI, 10/24/2026: From $224
    24

    Sat

  • SEA–BWI, 10/25/2026: From $263
    25

    Sun

  • SEA–BWI, 10/26/2026: From $263
    26

    Mon

  • SEA–BWI, 10/27/2026: From $224
    27

    Tue

  • SEA–BWI, 10/28/2026: From $224
    28

    Wed

  • SEA–BWI, 10/29/2026: From $234
    29

    Thu

  • SEA–BWI, 10/30/2026: From $234
    30

    Fri

  • SEA–BWI: cmp-view-offers-disclaimer. Find Offers
    31

    Sat

  • SEA–BWI, 11/01/2026: From $234
    01

    Sun

    NOV

  • SEA–BWI, 11/02/2026: From $234
    02

    Mon

  • SEA–BWI, 11/03/2026: From $224
    03

    Tue

  • SEA–BWI, 11/04/2026: From $229
    04

    Wed

  • SEA–BWI, 11/05/2026: From $234
    05

    Thu

  • SEA–BWI, 11/06/2026: From $239
    06

    Fri

  • SEA–BWI, 11/07/2026: From $224
    07

    Sat

  • SEA–BWI: cmp-view-offers-disclaimer. Find Offers
    08

    Sun

  • SEA–BWI: cmp-view-offers-disclaimer. Find Offers
    09

    Mon

  • SEA–BWI: cmp-view-offers-disclaimer. Find Offers
    10

    Tue

  • SEA–BWI: cmp-view-offers-disclaimer. Find Offers
    11

    Wed

  • SEA–BWI, 11/12/2026: From $146
    12

    Thu

  • SEA–BWI: cmp-view-offers-disclaimer. Find Offers
    13

    Fri

  • SEA–BWI: cmp-view-offers-disclaimer. Find Offers
    14

    Sat

  • SEA–BWI: cmp-view-offers-disclaimer. Find Offers
    15

    Sun

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

    Mon

  • SEA–BWI: cmp-view-offers-disclaimer. Find Offers
    17

    Tue

  • SEA–BWI: cmp-view-offers-disclaimer. Find Offers
    18

    Wed

  • SEA–BWI, 11/19/2026: From $239
    19

    Thu

  • SEA–BWI, 11/20/2026: From $198
    20

    Fri

  • SEA–BWI, 11/21/2026: From $134
    21

    Sat

    • Range$134-$263

    *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:
    Seattle/Tacoma International Airport
    Arriving at:
    Balt./Wash. International Airport
    Average flight time:
    5 hours
    Distance:
    2335 miles

    Questions we hear the most

    The average flight time from Seattle/Tacoma to Baltimore/Washington is 5 hours.
    There are 150 weekly flights from Seattle/Tacoma to Baltimore/Washington on Southwest Airlines.
    Yes, Southwest flies nonstop from Seattle/Tacoma to Baltimore/Washington once per day from Monday through Friday.
    To find the lowest fares by day and time to fly Seattle/Tacoma to Baltimore/Washington with Southwest, check out our Low Fare Calendar.
    You can rent a car at Balt./Wash. International Airport book yours with your flight.
    Yes! Flights from Seattle/Tacoma to Baltimore/Washington—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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