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

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Low fares from Ontario/LA to Kansas City

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Ontario/LA (ONT)to

Kansas City (MCI)
Depart: 09/30/2026

One-way

Basic

From
$186
Seen: 18 hrs ago

Ontario/LA (ONT)to

Kansas City (MCI)
Depart: 09/12/2026

One-way

Basic

From
$186
Seen: 16 hrs ago

Ontario/LA (ONT)to

Kansas City (MCI)
Depart: 09/15/2026

One-way

Basic

From
$186
Seen: 8 hrs ago

Ontario/LA (ONT)to

Kansas City (MCI)
Depart: 09/17/2026

One-way

Basic

From
$186
Seen: 3 hrs ago

Ontario/LA (ONT)to

Kansas City (MCI)
Depart: 10/01/2026

One-way

Basic

From
$186
Seen: 18 hrs ago

Ontario/LA (ONT)to

Kansas City (MCI)
Depart: 11/04/2026

One-way

Basic

From
$186
Seen: 11 hrs ago

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Explore flights from Ontario/LA to Kansas City

Aug 2026
From$279*
Seen: 20 hrs ago
One Way/Basic
Sep 2026
From$186*
Seen: 18 hrs ago
One Way/Basic
Oct 2026
From$186*
Seen: 12 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $186
cmp-daily-histogram-bars-legend-max-price-aria-label $445
Displaying fares for August-2026
  • ONT–MCI, 08/21/2026: From $372
    21

    Fri

    AUG

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

    Sat

  • ONT–MCI, 08/23/2026: From $445
    23

    Sun

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    24

    Mon

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    25

    Tue

  • ONT–MCI, 08/26/2026: From $279
    26

    Wed

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    27

    Thu

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

    Fri

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    29

    Sat

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    30

    Sun

  • ONT–MCI, 08/31/2026: From $372
    31

    Mon

  • ONT–MCI: cmp-view-offers-disclaimer. Find Offers
    01

    Tue

    SEP

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    02

    Wed

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    03

    Thu

  • ONT–MCI, 09/04/2026: From $299
    04

    Fri

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    05

    Sat

  • ONT–MCI, 09/06/2026: From $299
    06

    Sun

  • ONT–MCI, 09/07/2026: From $342
    07

    Mon

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    08

    Tue

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

    Wed

  • ONT–MCI, 09/10/2026: From $186
    10

    Thu

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

    Fri

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

    Sat

  • ONT–MCI, 09/13/2026: From $254
    13

    Sun

  • ONT–MCI, 09/14/2026: From $226
    14

    Mon

  • ONT–MCI, 09/15/2026: From $186
    15

    Tue

  • ONT–MCI, 09/16/2026: From $186
    16

    Wed

  • ONT–MCI, 09/17/2026: From $186
    17

    Thu

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

    Fri

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    19

    Sat

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    20

    Sun

    • Range$186-$445

    *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:
    Kansas City International Airport
    Distance:
    1318 miles

    Route Information

    153† 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 153 weekly flights from Ontario/LA to Kansas City on Southwest Airlines.
    To find the lowest fares by day and time to fly Ontario/LA to Kansas City with Southwest, check out our Low Fare Calendar.
    You can rent a car at Kansas City International Airport book yours with your flight.
    Yes! Flights from Ontario/LA to Kansas City—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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