Southwest® flights from Columbus to Ontario/LA from $189

Promo Code

Low fares from Columbus to Ontario/LA

$

Columbus (CMH)to

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

One-way

Basic

From
$189
Seen: 21 hrs ago

Columbus (CMH)to

Ontario/LA (ONT)
Depart: 10/28/2026

One-way

Basic

From
$189
Seen: 3 hrs ago

Columbus (CMH)to

Ontario/LA (ONT)
Depart: 10/21/2026

One-way

Basic

From
$189
Seen: 2 hrs ago

Columbus (CMH)to

Ontario/LA (ONT)
Depart: 12/17/2026

One-way

Basic

From
$189
Seen: 10 hrs ago

Columbus (CMH)to

Ontario/LA (ONT)
Depart: 10/29/2026

One-way

Basic

From
$189
Seen: 17 hrs ago

Columbus (CMH)to

Ontario/LA (ONT)
Depart: 12/14/2026

One-way

Basic

From
$189
Seen: 15 hrs ago

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Explore flights from Columbus to Ontario/LA

Sep 2026
From$206*
Seen: 1 hour ago
One Way/Basic
Oct 2026
From$189*
Seen: 17 hrs ago
One Way/Basic
Nov 2026
From$189*
Seen: 10 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $206
cmp-daily-histogram-bars-legend-max-price-aria-label $820
Displaying fares for September-2026
  • CMH–ONT, 09/10/2026: From $372
    10

    Thu

    SEP

  • CMH–ONT, 09/11/2026: From $372
    11

    Fri

  • CMH–ONT, 09/12/2026: From $289
    12

    Sat

  • CMH–ONT, 09/13/2026: From $455
    13

    Sun

  • CMH–ONT: cmp-view-offers-disclaimer. Find Offers
    14

    Mon

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    15

    Tue

  • CMH–ONT: cmp-view-offers-disclaimer. Find Offers
    16

    Wed

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    17

    Thu

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    18

    Fri

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

    Sat

  • CMH–ONT, 09/20/2026: From $372
    20

    Sun

  • CMH–ONT, 09/21/2026: From $820
    21

    Mon

  • CMH–ONT, 09/22/2026: From $504
    22

    Tue

  • CMH–ONT, 09/23/2026: From $289
    23

    Wed

  • CMH–ONT, 09/24/2026: From $304
    24

    Thu

  • CMH–ONT, 09/25/2026: From $304
    25

    Fri

  • CMH–ONT, 09/26/2026: From $284
    26

    Sat

  • CMH–ONT, 09/27/2026: From $304
    27

    Sun

  • CMH–ONT, 09/28/2026: From $304
    28

    Mon

  • CMH–ONT, 09/29/2026: From $284
    29

    Tue

  • CMH–ONT, 09/30/2026: From $206
    30

    Wed

  • CMH–ONT, 10/01/2026: From $239
    01

    Thu

    OCT

  • CMH–ONT: cmp-view-offers-disclaimer. Find Offers
    02

    Fri

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    03

    Sat

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    04

    Sun

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    05

    Mon

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    06

    Tue

  • CMH–ONT, 10/07/2026: From $206
    07

    Wed

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    08

    Thu

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    09

    Fri

    • Range$206-$820

    *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:
    Port Columbus International Airport
    Arriving at:
    LA/Ontario International Airport
    Distance:
    1949 miles

    Route Information

    145† 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 145 weekly flights from Columbus to Ontario/LA on Southwest Airlines.
    To find the lowest fares by day and time to fly Columbus 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 Columbus 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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