Southwest® flights from San Antonio to Boise from $142

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Low fares from San Antonio to Boise

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San Antonio (SAT)to

Boise (BOI)
Depart: 12/12/2026

One-way

Basic

From
$142
Seen: 18 hrs ago

San Antonio (SAT)to

Boise (BOI)
Depart: 12/16/2026

One-way

Basic

From
$142
Seen: 18 hrs ago

San Antonio (SAT)to

Boise (BOI)
Depart: 12/15/2026

One-way

Basic

From
$142
Seen: 18 hrs ago

San Antonio (SAT)to

Boise (BOI)
Depart: 12/12/2026

One-way

Choice

From
$178
Seen: 18 hrs ago

San Antonio (SAT)to

Boise (BOI)
Depart: 12/15/2026

One-way

Choice

From
$178
Seen: 18 hrs ago

San Antonio (SAT)to

Boise (BOI)
Depart: 12/16/2026

One-way

Choice

From
$178
Seen: 18 hrs ago

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Explore flights from San Antonio to Boise

Sep 2026
From$282*
Seen: 12 hrs ago
One Way/Basic
Oct 2026
From$185*
Seen: 19 hrs ago
One Way/Basic
Nov 2026
From$258*
Seen: 2 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $185
cmp-daily-histogram-bars-legend-max-price-aria-label $365
Displaying fares for September-2026
  • SAT–BOI, 09/23/2026: From $282
    23

    Wed

    SEP

  • SAT–BOI, 09/24/2026: From $365
    24

    Thu

  • SAT–BOI, 09/25/2026: From $365
    25

    Fri

  • SAT–BOI: cmp-view-offers-disclaimer. Find Offers
    26

    Sat

  • SAT–BOI, 09/27/2026: From $365
    27

    Sun

  • SAT–BOI, 09/28/2026: From $365
    28

    Mon

  • SAT–BOI: cmp-view-offers-disclaimer. Find Offers
    29

    Tue

  • SAT–BOI, 09/30/2026: From $295
    30

    Wed

  • SAT–BOI, 10/01/2026: From $365
    01

    Thu

    OCT

  • SAT–BOI, 10/02/2026: From $365
    02

    Fri

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    03

    Sat

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

    Sun

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    05

    Mon

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

    Tue

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

    Wed

  • SAT–BOI, 10/08/2026: From $365
    08

    Thu

  • SAT–BOI, 10/09/2026: From $352
    09

    Fri

  • SAT–BOI, 10/10/2026: From $282
    10

    Sat

  • SAT–BOI: cmp-view-offers-disclaimer. Find Offers
    11

    Sun

  • SAT–BOI, 10/12/2026: From $309
    12

    Mon

  • SAT–BOI, 10/13/2026: From $185
    13

    Tue

  • SAT–BOI: cmp-view-offers-disclaimer. Find Offers
    14

    Wed

  • SAT–BOI: cmp-view-offers-disclaimer. Find Offers
    15

    Thu

  • SAT–BOI: cmp-view-offers-disclaimer. Find Offers
    16

    Fri

  • SAT–BOI: cmp-view-offers-disclaimer. Find Offers
    17

    Sat

  • SAT–BOI: cmp-view-offers-disclaimer. Find Offers
    18

    Sun

  • SAT–BOI, 10/19/2026: From $185
    19

    Mon

  • SAT–BOI: cmp-view-offers-disclaimer. Find Offers
    20

    Tue

  • SAT–BOI, 10/21/2026: From $185
    21

    Wed

  • SAT–BOI: cmp-view-offers-disclaimer. Find Offers
    22

    Thu

    • Range$185-$365

    *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:
    San Antonio International Airport
    Arriving at:
    Boise Airport
    Distance:
    1377 miles

    Route Information

    115† Weekly flights

    † 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

    There are 115 weekly flights from San Antonio to Boise on Southwest Airlines.
    To find the lowest fares by day and time to fly San Antonio to Boise with Southwest, check out our Low Fare Calendar.
    You can rent a car at Boise Airport book yours with your flight.
    Yes! Flights from San Antonio to Boise—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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