Southwest® flights from Buffalo/Niagara Falls to San Antonio from $172

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Low fares from Buffalo/Niagara Falls to San Antonio

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Buffalo/Niagara Falls (BUF)to

San Antonio (SAT)
Depart: 12/16/2026

One-way

Basic

From
$172
Seen: 12 hrs ago

Buffalo/Niagara Falls (BUF)to

San Antonio (SAT)
Depart: 12/08/2026

One-way

Basic

From
$172
Seen: 6 hrs ago

Buffalo/Niagara Falls (BUF)to

San Antonio (SAT)
Depart: 12/17/2026

One-way

Basic

From
$192
Seen: 23 hrs ago

Buffalo/Niagara Falls (BUF)to

San Antonio (SAT)
Depart: 02/18/2027

One-way

Basic

From
$192
Seen: 5 hrs ago

Buffalo/Niagara Falls (BUF)to

San Antonio (SAT)
Depart: 12/11/2026

One-way

Basic

From
$207
Seen: 2 hrs ago

Buffalo/Niagara Falls (BUF)to

San Antonio (SAT)
Depart: 12/25/2026

One-way

Basic

From
$207
Seen: 21 hrs ago

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Explore flights from Buffalo/Niagara Falls to San Antonio

Nov 2026
From$314*
Seen: 20 hrs ago
One Way/Basic
Dec 2026
From$172*
Seen: 12 hrs ago
One Way/Basic
Jan 2027
From$249*
Seen: 3 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $172
cmp-daily-histogram-bars-legend-max-price-aria-label $428
Displaying fares for November-2026
  • BUF–SAT, 11/13/2026: From $396
    13

    Fri

    NOV

  • BUF–SAT, 11/14/2026: From $316
    14

    Sat

  • BUF–SAT, 11/15/2026: From $401
    15

    Sun

  • BUF–SAT, 11/16/2026: From $396
    16

    Mon

  • BUF–SAT, 11/17/2026: From $321
    17

    Tue

  • BUF–SAT, 11/18/2026: From $316
    18

    Wed

  • BUF–SAT, 11/19/2026: From $401
    19

    Thu

  • BUF–SAT, 11/20/2026: From $396
    20

    Fri

  • BUF–SAT: cmp-view-offers-disclaimer. Find Offers
    21

    Sat

  • BUF–SAT, 11/22/2026: From $396
    22

    Sun

  • BUF–SAT, 11/23/2026: From $401
    23

    Mon

  • BUF–SAT, 11/24/2026: From $316
    24

    Tue

  • BUF–SAT: cmp-view-offers-disclaimer. Find Offers
    25

    Wed

  • BUF–SAT, 11/26/2026: From $314
    26

    Thu

  • BUF–SAT, 11/27/2026: From $314
    27

    Fri

  • BUF–SAT, 11/28/2026: From $428
    28

    Sat

  • BUF–SAT, 11/29/2026: From $428
    29

    Sun

  • BUF–SAT, 11/30/2026: From $330
    30

    Mon

  • BUF–SAT: cmp-view-offers-disclaimer. Find Offers
    01

    Tue

    DEC

  • BUF–SAT: cmp-view-offers-disclaimer. Find Offers
    02

    Wed

  • BUF–SAT, 12/03/2026: From $319
    03

    Thu

  • BUF–SAT: cmp-view-offers-disclaimer. Find Offers
    04

    Fri

  • BUF–SAT: cmp-view-offers-disclaimer. Find Offers
    05

    Sat

  • BUF–SAT: cmp-view-offers-disclaimer. Find Offers
    06

    Sun

  • BUF–SAT: cmp-view-offers-disclaimer. Find Offers
    07

    Mon

  • BUF–SAT, 12/08/2026: From $172
    08

    Tue

  • BUF–SAT: cmp-view-offers-disclaimer. Find Offers
    09

    Wed

  • BUF–SAT: cmp-view-offers-disclaimer. Find Offers
    10

    Thu

  • BUF–SAT, 12/11/2026: From $207
    11

    Fri

  • BUF–SAT: cmp-view-offers-disclaimer. Find Offers
    12

    Sat

    • Range$172-$428

    *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:
    Buffalo Niagara International Airport
    Arriving at:
    San Antonio International Airport
    Distance:
    1432 miles

    Questions we hear the most

    There are 122 weekly flights from Buffalo/Niagara Falls to San Antonio on Southwest Airlines.
    To find the lowest fares by day and time to fly Buffalo/Niagara Falls 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 Buffalo/Niagara Falls 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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