Southwest® flights from Indianapolis to Ontario/LA from $169

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Low fares from Indianapolis to Ontario/LA

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Indianapolis (IND)to

Ontario/LA (ONT)
Depart: 11/10/2026

One-way

Basic

From
$169
Seen: 1 hour ago

Indianapolis (IND)to

Ontario/LA (ONT)
Depart: 11/19/2026

One-way

Basic

From
$189
Seen: 12 hrs ago

Indianapolis (IND)to

Ontario/LA (ONT)
Depart: 10/07/2026

One-way

Basic

From
$189
Seen: 10 hrs ago

Indianapolis (IND)to

Ontario/LA (ONT)
Depart: 10/01/2026

One-way

Basic

From
$189
Seen: 20 hrs ago

Indianapolis (IND)to

Ontario/LA (ONT)
Depart: 09/17/2026

One-way

Basic

From
$189
Seen: 19 hrs ago

Indianapolis (IND)to

Ontario/LA (ONT)
Depart: 10/22/2026

One-way

Basic

From
$189
Seen: 19 hrs ago

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Explore flights from Indianapolis to Ontario/LA

Aug 2026
From$504*
Seen: 10 hrs ago
One Way/Basic
Sep 2026
From$189*
Seen: 20 hrs ago
One Way/Basic
Oct 2026
From$189*
Seen: 21 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $189
cmp-daily-histogram-bars-legend-max-price-aria-label $574
Displaying fares for August-2026
  • IND–ONT, 08/22/2026: From $574
    22

    Sat

    AUG

  • IND–ONT, 08/23/2026: From $574
    23

    Sun

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    24

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  • IND–ONT, 08/26/2026: From $574
    26

    Wed

  • IND–ONT, 08/27/2026: From $504
    27

    Thu

  • IND–ONT, 08/28/2026: From $504
    28

    Fri

  • IND–ONT, 08/29/2026: From $504
    29

    Sat

  • IND–ONT, 08/30/2026: From $504
    30

    Sun

  • IND–ONT, 08/31/2026: From $504
    31

    Mon

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    01

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    SEP

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    02

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    03

    Thu

  • IND–ONT, 09/04/2026: From $304
    04

    Fri

  • IND–ONT, 09/05/2026: From $304
    05

    Sat

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    06

    Sun

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    07

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    08

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    09

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    10

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  • IND–ONT, 09/11/2026: From $189
    11

    Fri

  • IND–ONT, 09/12/2026: From $189
    12

    Sat

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    13

    Sun

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    14

    Mon

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    15

    Tue

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    16

    Wed

  • IND–ONT, 09/17/2026: From $189
    17

    Thu

  • IND–ONT, 09/18/2026: From $207
    18

    Fri

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    19

    Sat

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    20

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    21

    Mon

    • Range$189-$574

    *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:
    Indianapolis International Airport
    Arriving at:
    LA/Ontario International Airport
    Distance:
    1768 miles

    Route Information

    152† 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 152 weekly flights from Indianapolis to Ontario/LA on Southwest Airlines.
    To find the lowest fares by day and time to fly Indianapolis to Ontario/LA with Southwest, check out our Low Fare Calendar.
    You can rent a car at LA/Ontario International Airport book yours with your flight.
    Yes! Flights from Indianapolis to Ontario/LA—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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