Southwest® flights from Ontario/LA to Austin from $165

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Low fares from Ontario/LA to Austin

$

Ontario/LA (ONT)to

Austin (AUS)
Depart: 12/12/2026

One-way

Basic

From
$165
Seen: 10 hrs ago

Ontario/LA (ONT)to

Austin (AUS)
Depart: 01/20/2027

One-way

Basic

From
$165
Seen: 7 hrs ago

Ontario/LA (ONT)to

Austin (AUS)
Depart: 12/08/2026

One-way

Basic

From
$165
Seen: 6 hrs ago

Ontario/LA (ONT)to

Austin (AUS)
Depart: 12/16/2026

One-way

Basic

From
$165
Seen: 6 hrs ago

Ontario/LA (ONT)to

Austin (AUS)
Depart: 12/15/2026

One-way

Basic

From
$165
Seen: 7 minutes ago

Ontario/LA (ONT)to

Austin (AUS)
Depart: 12/09/2026

One-way

Basic

From
$165
Seen: 4 hrs ago

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Explore flights from Ontario/LA to Austin

Nov 2026
From$322*
Seen: 16 hrs ago
One Way/Basic
Dec 2026
From$165*
Seen: 6 hrs ago
One Way/Basic
Jan 2027
From$165*
Seen: 7 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $165
cmp-daily-histogram-bars-legend-max-price-aria-label $499
Displaying fares for November-2026
  • ONT–AUS, 11/12/2026: From $499
    12

    Thu

    NOV

  • ONT–AUS, 11/13/2026: From $499
    13

    Fri

  • ONT–AUS, 11/14/2026: From $499
    14

    Sat

  • ONT–AUS, 11/15/2026: From $499
    15

    Sun

  • ONT–AUS, 11/16/2026: From $499
    16

    Mon

  • ONT–AUS, 11/17/2026: From $499
    17

    Tue

  • ONT–AUS, 11/18/2026: From $442
    18

    Wed

  • ONT–AUS, 11/19/2026: From $442
    19

    Thu

  • ONT–AUS, 11/20/2026: From $442
    20

    Fri

  • ONT–AUS, 11/21/2026: From $442
    21

    Sat

  • ONT–AUS: cmp-view-offers-disclaimer. Find Offers
    22

    Sun

  • ONT–AUS, 11/23/2026: From $442
    23

    Mon

  • ONT–AUS, 11/24/2026: From $442
    24

    Tue

  • ONT–AUS, 11/25/2026: From $322
    25

    Wed

  • ONT–AUS, 11/26/2026: From $322
    26

    Thu

  • ONT–AUS, 11/27/2026: From $322
    27

    Fri

  • ONT–AUS: cmp-view-offers-disclaimer. Find Offers
    28

    Sat

  • ONT–AUS, 11/29/2026: From $352
    29

    Sun

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

    Mon

  • ONT–AUS, 12/01/2026: From $322
    01

    Tue

    DEC

  • ONT–AUS, 12/02/2026: From $175
    02

    Wed

  • ONT–AUS, 12/03/2026: From $185
    03

    Thu

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

    Fri

  • ONT–AUS: cmp-view-offers-disclaimer. Find Offers
    05

    Sat

  • ONT–AUS, 12/06/2026: From $244
    06

    Sun

  • ONT–AUS, 12/07/2026: From $200
    07

    Mon

  • ONT–AUS, 12/08/2026: From $165
    08

    Tue

  • ONT–AUS, 12/09/2026: From $165
    09

    Wed

  • ONT–AUS, 12/10/2026: From $195
    10

    Thu

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

    Fri

    • Range$165-$499

    *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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