Southwest® flights from Seattle/Tacoma to Baltimore/Washington from $199

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Low fares from Seattle/Tacoma to Baltimore/Washington

$

Seattle/Tacoma (SEA)to

Baltimore/Washington (BWI)
Depart: 09/22/2026

One-way

Basic

From
$199
Seen: 5 hrs ago

Seattle/Tacoma (SEA)to

Baltimore/Washington (BWI)
Depart: 09/25/2026

One-way

Basic

From
$199
Seen: 9 hrs ago

Seattle/Tacoma (SEA)to

Baltimore/Washington (BWI)
Depart: 10/02/2026

One-way

Basic

From
$209
Seen: 14 hrs ago

Seattle/Tacoma (SEA)to

Baltimore/Washington (BWI)
Depart: 10/20/2026

One-way

Basic

From
$209
Seen: 13 hrs ago

Seattle/Tacoma (SEA)to

Baltimore/Washington (BWI)
Depart: 10/22/2026

One-way

Basic

From
$209
Seen: 10 hrs ago

Seattle/Tacoma (SEA)to

Baltimore/Washington (BWI)
Depart: 11/26/2026

One-way

Basic

From
$209
Seen: 5 hrs ago

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Explore flights from Seattle/Tacoma to Baltimore/Washington

Aug 2026
From$251*
Seen: 10 hrs ago
One Way/Basic
Sep 2026
From$199*
Seen: 5 hrs ago
One Way/Basic
Oct 2026
From$209*
Seen: 5 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $209
cmp-daily-histogram-bars-legend-max-price-aria-label $459
Displaying fares for August-2026
  • SEA–BWI, 08/22/2026: From $261
    22

    Sat

    AUG

  • SEA–BWI, 08/23/2026: From $307
    23

    Sun

  • SEA–BWI, 08/24/2026: From $297
    24

    Mon

  • SEA–BWI, 08/25/2026: From $261
    25

    Tue

  • SEA–BWI, 08/26/2026: From $251
    26

    Wed

  • SEA–BWI, 08/27/2026: From $297
    27

    Thu

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

    Fri

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

    Sat

  • SEA–BWI, 08/30/2026: From $297
    30

    Sun

  • SEA–BWI, 08/31/2026: From $297
    31

    Mon

  • SEA–BWI: cmp-view-offers-disclaimer. Find Offers
    01

    Tue

    SEP

  • SEA–BWI, 09/02/2026: From $261
    02

    Wed

  • SEA–BWI, 09/03/2026: From $307
    03

    Thu

  • SEA–BWI, 09/04/2026: From $307
    04

    Fri

  • SEA–BWI, 09/05/2026: From $261
    05

    Sat

  • SEA–BWI, 09/06/2026: From $307
    06

    Sun

  • SEA–BWI, 09/07/2026: From $459
    07

    Mon

  • SEA–BWI, 09/08/2026: From $261
    08

    Tue

  • SEA–BWI, 09/09/2026: From $251
    09

    Wed

  • SEA–BWI, 09/10/2026: From $297
    10

    Thu

  • SEA–BWI, 09/11/2026: From $209
    11

    Fri

  • SEA–BWI, 09/12/2026: From $219
    12

    Sat

  • SEA–BWI, 09/13/2026: From $219
    13

    Sun

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

    Mon

  • SEA–BWI, 09/15/2026: From $219
    15

    Tue

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

    Wed

  • SEA–BWI, 09/17/2026: From $209
    17

    Thu

  • SEA–BWI, 09/18/2026: From $209
    18

    Fri

  • SEA–BWI, 09/19/2026: From $209
    19

    Sat

  • SEA–BWI, 09/20/2026: From $219
    20

    Sun

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

    Mon

    • Range$209-$459

    *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

    Route Information

    150† Weekly flights
    • 1‡ Nonstop flight per day Monday through Friday

    † Weekly flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025. Note: route may not operate every day of the week.

    ‡ Nonstop flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025.

    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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