Southwest® flights from Ontario/LA to Austin from $123

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Low fares from Ontario/LA to Austin

$

Ontario/LA (ONT)to

Austin (AUS)
Depart: 12/10/2026

One-way

Basic

From
$123
Seen: 23 hrs ago

Ontario/LA (ONT)to

Austin (AUS)
Depart: 01/06/2027

One-way

Basic

From
$123
Seen: 12 hrs ago

Ontario/LA (ONT)to

Austin (AUS)
Depart: 01/05/2027

One-way

Basic

From
$123
Seen: 12 hrs ago

Ontario/LA (ONT)to

Austin (AUS)
Depart: 01/09/2027

One-way

Basic

From
$123
Seen: 11 hrs ago

Ontario/LA (ONT)to

Austin (AUS)
Depart: 12/12/2026

One-way

Basic

From
$123
Seen: 9 hrs ago

Ontario/LA (ONT)to

Austin (AUS)
Depart: 12/05/2026

One-way

Basic

From
$123
Seen: 9 hrs ago

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Explore flights from Ontario/LA to Austin

Oct 2026
From$437*
Seen: 14 hrs ago
One Way/Basic
Nov 2026
From$123*
Seen: 12 hrs ago
One Way/Basic
Dec 2026
From$123*
Seen: 4 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $123
cmp-daily-histogram-bars-legend-max-price-aria-label $494
Displaying fares for October-2026
  • ONT–AUS, 10/23/2026: From $494
    23

    Fri

    OCT

  • ONT–AUS, 10/24/2026: From $494
    24

    Sat

  • ONT–AUS, 10/25/2026: From $494
    25

    Sun

  • ONT–AUS: cmp-view-offers-disclaimer. Find Offers
    26

    Mon

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

    Tue

  • ONT–AUS, 10/28/2026: From $494
    28

    Wed

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

    Thu

  • ONT–AUS: cmp-view-offers-disclaimer. Find Offers
    30

    Fri

  • ONT–AUS, 10/31/2026: From $437
    31

    Sat

  • ONT–AUS, 11/01/2026: From $437
    01

    Sun

    NOV

  • ONT–AUS, 11/02/2026: From $437
    02

    Mon

  • ONT–AUS: cmp-view-offers-disclaimer. Find Offers
    03

    Tue

  • ONT–AUS: cmp-view-offers-disclaimer. Find Offers
    04

    Wed

  • ONT–AUS, 11/05/2026: From $317
    05

    Thu

  • ONT–AUS, 11/06/2026: From $317
    06

    Fri

  • ONT–AUS, 11/07/2026: From $317
    07

    Sat

  • ONT–AUS, 11/08/2026: From $317
    08

    Sun

  • ONT–AUS, 11/09/2026: From $123
    09

    Mon

  • ONT–AUS, 11/10/2026: From $123
    10

    Tue

  • ONT–AUS, 11/11/2026: From $123
    11

    Wed

  • ONT–AUS: cmp-view-offers-disclaimer. Find Offers
    12

    Thu

  • ONT–AUS, 11/13/2026: From $123
    13

    Fri

  • ONT–AUS, 11/14/2026: From $123
    14

    Sat

  • ONT–AUS, 11/15/2026: From $217
    15

    Sun

  • ONT–AUS, 11/16/2026: From $153
    16

    Mon

  • ONT–AUS: cmp-view-offers-disclaimer. Find Offers
    17

    Tue

  • ONT–AUS, 11/18/2026: From $123
    18

    Wed

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

    Thu

  • ONT–AUS, 11/20/2026: From $239
    20

    Fri

  • ONT–AUS, 11/21/2026: From $199
    21

    Sat

  • ONT–AUS, 11/22/2026: From $135
    22

    Sun

    • Range$123-$494

    *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:
    LA/Ontario International Airport
    Arriving at:
    Austin-Bergstrom International Airport
    Average flight time:
    2 hours 46 minutes
    Distance:
    1196 miles

    Questions we hear the most

    The average flight time from Ontario/LA to Austin is 2 hours 46 minutes.
    There are 153 weekly flights from Ontario/LA to Austin on Southwest Airlines.
    Yes, Southwest flies nonstop from Ontario/LA to Austin once per day from Monday through Friday.
    Yes, Southwest flies nonstop from Ontario/LA to Austin once per day on Sundays.
    To find the lowest fares by day and time to fly Ontario/LA 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 Ontario/LA 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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