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: 08/22/2026

One-way

Basic

From
$186
Seen: 8 hrs ago

Kansas City (MCI)to

Ontario/LA (ONT)
Depart: 08/19/2026

One-way

Basic

From
$186
Seen: 11 hrs ago

Kansas City (MCI)to

Ontario/LA (ONT)
Depart: 08/25/2026

One-way

Basic

From
$186
Seen: 15 hrs ago

Kansas City (MCI)to

Ontario/LA (ONT)
Depart: 08/29/2026

One-way

Basic

From
$186
Seen: 7 hrs ago

Kansas City (MCI)to

Ontario/LA (ONT)
Depart: 10/13/2026

One-way

Basic

From
$197
Seen: 17 hrs ago

Kansas City (MCI)to

Ontario/LA (ONT)
Depart: 10/06/2026

One-way

Basic

From
$197
Seen: 10 hrs ago

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Explore flights from Kansas City to Ontario/LA

Aug 2026
From$186*
Seen: 8 hrs ago
One Way/Basic
Sep 2026
From$197*
Seen: 2 hrs ago
One Way/Basic
Oct 2026
From$197*
Seen: 17 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $186
cmp-daily-histogram-bars-legend-max-price-aria-label $450
Displaying fares for August-2026
  • MCI–ONT, 08/02/2026: From $450
    02

    Sun

    AUG

  • MCI–ONT, 08/03/2026: From $372
    03

    Mon

  • MCI–ONT, 08/04/2026: From $279
    04

    Tue

  • MCI–ONT, 08/05/2026: From $294
    05

    Wed

  • MCI–ONT, 08/06/2026: From $372
    06

    Thu

  • MCI–ONT, 08/07/2026: From $372
    07

    Fri

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

    Sat

  • MCI–ONT: cmp-view-offers-disclaimer. Find Offers
    09

    Sun

  • MCI–ONT, 08/10/2026: From $372
    10

    Mon

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

    Tue

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    12

    Wed

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    13

    Thu

  • MCI–ONT, 08/14/2026: From $299
    14

    Fri

  • MCI–ONT, 08/15/2026: From $280
    15

    Sat

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

    Sun

  • MCI–ONT, 08/17/2026: From $255
    17

    Mon

  • MCI–ONT: cmp-view-offers-disclaimer. Find Offers
    18

    Tue

  • MCI–ONT, 08/19/2026: From $186
    19

    Wed

  • MCI–ONT, 08/20/2026: From $255
    20

    Thu

  • MCI–ONT, 08/21/2026: From $226
    21

    Fri

  • MCI–ONT, 08/22/2026: From $186
    22

    Sat

  • MCI–ONT: cmp-view-offers-disclaimer. Find Offers
    23

    Sun

  • MCI–ONT, 08/24/2026: From $212
    24

    Mon

  • MCI–ONT, 08/25/2026: From $186
    25

    Tue

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    26

    Wed

  • MCI–ONT, 08/27/2026: From $212
    27

    Thu

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    28

    Fri

  • MCI–ONT, 08/29/2026: From $186
    29

    Sat

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

    Sun

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

    Mon

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    01

    Tue

    SEP

    • Range$186-$450

    *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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