Southwest® flights from Boise to Austin from $150

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Low fares from Boise to Austin

$

Boise (BOI)to

Austin (AUS)
Depart: 11/03/2026

One-way

Basic

From
$150
Seen: 22 hrs ago

Boise (BOI)to

Austin (AUS)
Depart: 09/23/2026

One-way

Basic

From
$150
Seen: 21 hrs ago

Boise (BOI)to

Austin (AUS)
Depart: 10/28/2026

One-way

Basic

From
$150
Seen: 19 hrs ago

Boise (BOI)to

Austin (AUS)
Depart: 10/29/2026

One-way

Basic

From
$150
Seen: 6 hrs ago

Boise (BOI)to

Austin (AUS)
Depart: 10/27/2026

One-way

Basic

From
$150
Seen: 4 hrs ago

Boise (BOI)to

Austin (AUS)
Depart: 09/17/2026

One-way

Basic

From
$150
Seen: 4 hrs ago

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Explore flights from Boise to Austin

Aug 2026
From$290*
Seen: 2 hrs ago
One Way/Basic
Sep 2026
From$150*
Seen: 14 hrs ago
One Way/Basic
Oct 2026
From$150*
Seen: 19 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $150
cmp-daily-histogram-bars-legend-max-price-aria-label $419
Displaying fares for August-2026
  • BOI–AUS, 08/21/2026: From $366
    21

    Fri

    AUG

  • BOI–AUS, 08/22/2026: From $290
    22

    Sat

  • BOI–AUS, 08/23/2026: From $390
    23

    Sun

  • BOI–AUS, 08/24/2026: From $366
    24

    Mon

  • BOI–AUS: cmp-view-offers-disclaimer. Find Offers
    25

    Tue

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    26

    Wed

  • BOI–AUS: cmp-view-offers-disclaimer. Find Offers
    27

    Thu

  • BOI–AUS, 08/28/2026: From $366
    28

    Fri

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

    Sat

  • BOI–AUS, 08/30/2026: From $366
    30

    Sun

  • BOI–AUS, 08/31/2026: From $366
    31

    Mon

  • BOI–AUS: cmp-view-offers-disclaimer. Find Offers
    01

    Tue

    SEP

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    02

    Wed

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    03

    Thu

  • BOI–AUS, 09/04/2026: From $327
    04

    Fri

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    05

    Sat

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

    Sun

  • BOI–AUS, 09/07/2026: From $419
    07

    Mon

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    08

    Tue

  • BOI–AUS: cmp-view-offers-disclaimer. Find Offers
    09

    Wed

  • BOI–AUS, 09/10/2026: From $150
    10

    Thu

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

    Fri

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    12

    Sat

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    13

    Sun

  • BOI–AUS, 09/14/2026: From $150
    14

    Mon

  • BOI–AUS, 09/15/2026: From $150
    15

    Tue

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

    Wed

  • BOI–AUS, 09/17/2026: From $150
    17

    Thu

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

    Fri

  • BOI–AUS: cmp-view-offers-disclaimer. Find Offers
    19

    Sat

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

    Sun

    • Range$150-$419

    *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:
    Boise Airport
    Arriving at:
    Austin-Bergstrom International Airport
    Distance:
    1375 miles

    Route Information

    134† 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 134 weekly flights from Boise to Austin on Southwest Airlines.
    To find the lowest fares by day and time to fly Boise to Austin with Southwest, check out our Low Fare Calendar.
    You can rent a car at Austin-Bergstrom International Airport book yours with your flight.
    Yes! Flights from Boise to Austin—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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