Southwest® flights from Ontario/LA to New Orleans from $189

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Low fares from Ontario/LA to New Orleans

$

Ontario/LA (ONT)to

New Orleans (MSY)
Depart: 10/07/2026

One-way

Basic

From
$189
Seen: 23 hrs ago

Ontario/LA (ONT)to

New Orleans (MSY)
Depart: 11/11/2026

One-way

Basic

From
$189
Seen: 22 hrs ago

Ontario/LA (ONT)to

New Orleans (MSY)
Depart: 09/23/2026

One-way

Basic

From
$189
Seen: 18 hrs ago

Ontario/LA (ONT)to

New Orleans (MSY)
Depart: 09/26/2026

One-way

Basic

From
$189
Seen: 12 hrs ago

Ontario/LA (ONT)to

New Orleans (MSY)
Depart: 09/05/2026

One-way

Basic

From
$189
Seen: 12 hrs ago

Ontario/LA (ONT)to

New Orleans (MSY)
Depart: 09/14/2026

One-way

Basic

From
$189
Seen: 16 hrs ago

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Explore flights from Ontario/LA to New Orleans

Aug 2026
From$456*
Seen: 2 hrs ago
One Way/Basic
Sep 2026
From$189*
Seen: 14 hrs ago
One Way/Basic
Oct 2026
From$189*
Seen: 12 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $189
cmp-daily-histogram-bars-legend-max-price-aria-label $564
Displaying fares for August-2026
  • ONT–MSY: cmp-view-offers-disclaimer. Find Offers
    19

    Wed

    AUG

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    20

    Thu

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    21

    Fri

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    22

    Sat

  • ONT–MSY, 08/23/2026: From $564
    23

    Sun

  • ONT–MSY, 08/24/2026: From $564
    24

    Mon

  • ONT–MSY, 08/25/2026: From $456
    25

    Tue

  • ONT–MSY, 08/26/2026: From $456
    26

    Wed

  • ONT–MSY, 08/27/2026: From $456
    27

    Thu

  • ONT–MSY, 08/28/2026: From $456
    28

    Fri

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    29

    Sat

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    30

    Sun

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    31

    Mon

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    01

    Tue

    SEP

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    02

    Wed

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    03

    Thu

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    04

    Fri

  • ONT–MSY, 09/05/2026: From $189
    05

    Sat

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    06

    Sun

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    07

    Mon

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    08

    Tue

  • ONT–MSY, 09/09/2026: From $189
    09

    Wed

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

    Thu

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

    Fri

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

    Sat

  • ONT–MSY, 09/13/2026: From $274
    13

    Sun

  • ONT–MSY, 09/14/2026: From $189
    14

    Mon

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

    Tue

  • ONT–MSY, 09/16/2026: From $189
    16

    Wed

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

    Thu

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

    Fri

    • Range$189-$564

    *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:
    Louis Armstrong International Airport
    Distance:
    1624 miles

    Route Information

    135† 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 135 weekly flights from Ontario/LA to New Orleans on Southwest Airlines.
    To find the lowest fares by day and time to fly Ontario/LA to New Orleans with Southwest, check out our Low Fare Calendar.
    You can rent a car at Louis Armstrong International Airport book yours with your flight.
    Yes! Flights from Ontario/LA to New Orleans—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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