Southwest® flights from Kansas City to Ontario/LA from $186

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Low fares from Kansas City to Ontario/LA

$

Kansas City (MCI)to

Ontario/LA (ONT)
Depart: 09/29/2026

One-way

Basic

From
$186
Seen: 21 hrs ago

Kansas City (MCI)to

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

One-way

Basic

From
$186
Seen: 14 hrs ago

Kansas City (MCI)to

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

One-way

Basic

From
$186
Seen: 15 hrs ago

Kansas City (MCI)to

Ontario/LA (ONT)
Depart: 11/12/2026

One-way

Basic

From
$186
Seen: 11 hrs ago

Kansas City (MCI)to

Ontario/LA (ONT)
Depart: 09/26/2026

One-way

Basic

From
$186
Seen: 15 hrs ago

Kansas City (MCI)to

Ontario/LA (ONT)
Depart: 09/12/2026

One-way

Basic

From
$186
Seen: 9 hrs ago

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Explore flights from Kansas City to Ontario/LA

Aug 2026
From$279*
Seen: 15 hrs ago
One Way/Basic
Sep 2026
From$186*
Seen: 15 hrs ago
One Way/Basic
Oct 2026
From$186*
Seen: 16 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $186
cmp-daily-histogram-bars-legend-max-price-aria-label $530
Displaying fares for August-2026
  • MCI–ONT, 08/22/2026: From $450
    22

    Sat

    AUG

  • MCI–ONT, 08/23/2026: From $530
    23

    Sun

  • MCI–ONT, 08/24/2026: From $372
    24

    Mon

  • MCI–ONT, 08/25/2026: From $279
    25

    Tue

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

    Wed

  • MCI–ONT, 08/27/2026: From $372
    27

    Thu

  • MCI–ONT, 08/28/2026: From $372
    28

    Fri

  • MCI–ONT, 08/29/2026: From $280
    29

    Sat

  • MCI–ONT, 08/30/2026: From $415
    30

    Sun

  • MCI–ONT: cmp-view-offers-disclaimer. Find Offers
    31

    Mon

  • MCI–ONT, 09/01/2026: From $279
    01

    Tue

    SEP

  • MCI–ONT, 09/02/2026: From $279
    02

    Wed

  • MCI–ONT, 09/03/2026: From $372
    03

    Thu

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

    Fri

  • MCI–ONT, 09/05/2026: From $280
    05

    Sat

  • MCI–ONT: cmp-view-offers-disclaimer. Find Offers
    06

    Sun

  • MCI–ONT, 09/07/2026: From $309
    07

    Mon

  • MCI–ONT: cmp-view-offers-disclaimer. Find Offers
    08

    Tue

  • MCI–ONT, 09/09/2026: From $197
    09

    Wed

  • MCI–ONT: cmp-view-offers-disclaimer. Find Offers
    10

    Thu

  • MCI–ONT, 09/11/2026: From $197
    11

    Fri

  • MCI–ONT, 09/12/2026: From $186
    12

    Sat

  • MCI–ONT: cmp-view-offers-disclaimer. Find Offers
    13

    Sun

  • MCI–ONT, 09/14/2026: From $240
    14

    Mon

  • MCI–ONT: cmp-view-offers-disclaimer. Find Offers
    15

    Tue

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

    Wed

  • MCI–ONT, 09/17/2026: From $212
    17

    Thu

  • MCI–ONT, 09/18/2026: From $212
    18

    Fri

  • MCI–ONT, 09/19/2026: From $186
    19

    Sat

  • MCI–ONT, 09/20/2026: From $239
    20

    Sun

  • MCI–ONT: cmp-view-offers-disclaimer. Find Offers
    21

    Mon

    • Range$186-$530

    *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:
    Kansas City International Airport
    Arriving at:
    LA/Ontario International Airport
    Distance:
    1318 miles

    Route Information

    151† 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 151 weekly flights from Kansas City to Ontario/LA on Southwest Airlines.
    To find the lowest fares by day and time to fly Kansas City 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 Kansas City 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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