Southwest® flights from Baltimore/Washington to San Antonio from $189

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Low fares from Baltimore/Washington to San Antonio

$

Baltimore/Washington (BWI)to

San Antonio (SAT)
Depart: 04/28/2026

One-way

Basic

From
$189
Seen: 19 hrs ago

Baltimore/Washington (BWI)to

San Antonio (SAT)
Depart: 05/13/2026

One-way

Basic

From
$189
Seen: 20 hrs ago

Baltimore/Washington (BWI)to

San Antonio (SAT)
Depart: 05/05/2026

One-way

Basic

From
$189
Seen: 16 hrs ago

Baltimore/Washington (BWI)to

San Antonio (SAT)
Depart: 06/03/2026

One-way

Basic

From
$189
Seen: 7 hrs ago

Baltimore/Washington (BWI)to

San Antonio (SAT)
Depart: 04/29/2026

One-way

Basic

From
$189
Seen: 3 hrs ago

Baltimore/Washington (BWI)to

San Antonio (SAT)
Depart: 05/12/2026

One-way

Basic

From
$189
Seen: 3 hrs ago

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Explore flights from Baltimore/Washington to San Antonio

Apr 2026
From$189*
Seen: 3 hrs ago
One Way/Basic
May 2026
From$189*
Seen: 3 hrs ago
One Way/Basic
Jun 2026
From$189*
Seen: 6 hrs ago
One Way/Basic
$189
$295
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    • Range$189-$295

    *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:
    San Antonio International Airport
    Average flight time:
    3 hours 41 minutes
    Distance:
    1407 miles

    Route Information

    156† Weekly flights
    • 2‡ Nonstop flights per day Monday through Friday
    • 2‡ Nonstop flights on Saturday
    • 2‡ Nonstop flights on Sunday

    † 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 Baltimore/Washington to San Antonio is 3 hours 41 minutes.
    There are 156 weekly flights from Baltimore/Washington to San Antonio on Southwest Airlines.
    Yes, Southwest flies nonstop from Baltimore/Washington to San Antonio 2 times per day from Monday through Friday.
    Yes, Southwest flies nonstop from Baltimore/Washington to San Antonio 2 times per day on Saturdays and Sundays.
    To find the lowest fares by day and time to fly Baltimore/Washington to San Antonio with Southwest, check out our Low Fare Calendar.
    You can rent a car at San Antonio International Airport book yours with your flight.
    Yes! Flights from Baltimore/Washington to San Antonio—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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