Southwest® flights from Seattle/Tacoma to Baltimore/Washington from $99

Promo Code

Low fares from Seattle/Tacoma to Baltimore/Washington

$

Seattle/Tacoma (SEA)to

Baltimore/Washington (BWI)
Depart: 06/05/2026

One-way

Basic

From
$99
Seen: 12 hrs ago

Seattle/Tacoma (SEA)to

Baltimore/Washington (BWI)
Depart: 06/04/2026

One-way

Basic

From
$99
Seen: 10 hrs ago

Seattle/Tacoma (SEA)to

Baltimore/Washington (BWI)
Depart: 06/06/2026

One-way

Basic

From
$99
Seen: 7 hrs ago

Seattle/Tacoma (SEA)to

Baltimore/Washington (BWI)
Depart: 04/25/2026

One-way

Basic

From
$109
Seen: 5 hrs ago

Seattle/Tacoma (SEA)to

Baltimore/Washington (BWI)
Depart: 05/29/2026

One-way

Basic

From
$109
Seen: 5 hrs ago

Seattle/Tacoma (SEA)to

Baltimore/Washington (BWI)
Depart: 05/02/2026

One-way

Basic

From
$109
Seen: 11 hrs ago

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Explore flights from Seattle/Tacoma to Baltimore/Washington

Apr 2026
From$109*
Seen: 5 hrs ago
One Way/Basic
May 2026
From$109*
Seen: 10 hrs ago
One Way/Basic
Jun 2026
From$99*
Seen: 10 hrs ago
One Way/Basic
$109
$455
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    • Range$109-$455

    *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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