Southwest® flights from Seattle/Tacoma to Baltimore/Washington from $209

Promo Code

Low fares from Seattle/Tacoma to Baltimore/Washington

$

Seattle/Tacoma (SEA)to

Baltimore/Washington (BWI)
Depart: 10/21/2026

One-way

Basic

From
$209
Seen: 11 hrs ago

Seattle/Tacoma (SEA)to

Baltimore/Washington (BWI)
Depart: 12/02/2026

One-way

Basic

From
$209
Seen: 11 hrs ago

Seattle/Tacoma (SEA)to

Baltimore/Washington (BWI)
Depart: 10/17/2026

One-way

Basic

From
$209
Seen: 19 hrs ago

Seattle/Tacoma (SEA)to

Baltimore/Washington (BWI)
Depart: 12/01/2026

One-way

Basic

From
$209
Seen: 1 hour ago

Seattle/Tacoma (SEA)to

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

One-way

Basic

From
$209
Seen: 5 hrs ago

Seattle/Tacoma (SEA)to

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

One-way

Basic

From
$209
Seen: 22 hrs ago

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Explore flights from Seattle/Tacoma to Baltimore/Washington

Sep 2026
From$209*
Seen: 11 hrs ago
One Way/Basic
Oct 2026
From$209*
Seen: 22 hrs ago
One Way/Basic
Nov 2026
From$209*
Seen: 22 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $209
cmp-daily-histogram-bars-legend-max-price-aria-label $317
Displaying fares for September-2026
  • SEA–BWI, 09/11/2026: From $317
    11

    Fri

    SEP

  • SEA–BWI, 09/12/2026: From $271
    12

    Sat

  • SEA–BWI, 09/13/2026: From $317
    13

    Sun

  • SEA–BWI, 09/14/2026: From $307
    14

    Mon

  • SEA–BWI, 09/15/2026: From $261
    15

    Tue

  • SEA–BWI, 09/16/2026: From $261
    16

    Wed

  • SEA–BWI, 09/17/2026: From $317
    17

    Thu

  • SEA–BWI, 09/18/2026: From $307
    18

    Fri

  • SEA–BWI, 09/19/2026: From $271
    19

    Sat

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

    Sun

  • SEA–BWI, 09/21/2026: From $307
    21

    Mon

  • SEA–BWI, 09/22/2026: From $261
    22

    Tue

  • SEA–BWI: cmp-view-offers-disclaimer. Find Offers
    23

    Wed

  • SEA–BWI, 09/24/2026: From $317
    24

    Thu

  • SEA–BWI: cmp-view-offers-disclaimer. Find Offers
    25

    Fri

  • SEA–BWI: cmp-view-offers-disclaimer. Find Offers
    26

    Sat

  • SEA–BWI, 09/27/2026: From $307
    27

    Sun

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

    Mon

  • SEA–BWI, 09/29/2026: From $261
    29

    Tue

  • SEA–BWI, 09/30/2026: From $209
    30

    Wed

  • SEA–BWI, 10/01/2026: From $300
    01

    Thu

    OCT

  • SEA–BWI, 10/02/2026: From $219
    02

    Fri

  • SEA–BWI, 10/03/2026: From $219
    03

    Sat

  • SEA–BWI, 10/04/2026: From $219
    04

    Sun

  • SEA–BWI: cmp-view-offers-disclaimer. Find Offers
    05

    Mon

  • SEA–BWI: cmp-view-offers-disclaimer. Find Offers
    06

    Tue

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

    Wed

  • SEA–BWI, 10/08/2026: From $224
    08

    Thu

  • SEA–BWI, 10/09/2026: From $224
    09

    Fri

  • SEA–BWI, 10/10/2026: From $209
    10

    Sat

    • Range$209-$317

    *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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