Southwest® flights from Ontario/LA to New Orleans from $199

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Low fares from Ontario/LA to New Orleans

$

Ontario/LA (ONT)to

New Orleans (MSY)
Depart: 01/05/2027

One-way

Basic

From
$199
Seen: 18 hrs ago

Ontario/LA (ONT)to

New Orleans (MSY)
Depart: 12/01/2026

One-way

Basic

From
$199
Seen: 6 hrs ago

Ontario/LA (ONT)to

New Orleans (MSY)
Depart: 12/22/2026

One-way

Basic

From
$199
Seen: 21 hrs ago

Ontario/LA (ONT)to

New Orleans (MSY)
Depart: 12/05/2026

One-way

Basic

From
$199
Seen: 5 hrs ago

Ontario/LA (ONT)to

New Orleans (MSY)
Depart: 01/13/2027

One-way

Basic

From
$199
Seen: 21 hrs ago

Ontario/LA (ONT)to

New Orleans (MSY)
Depart: 01/09/2027

One-way

Basic

From
$199
Seen: 5 hrs ago

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Explore flights from Ontario/LA to New Orleans

Nov 2026
From$319*
Seen: 12 hrs ago
One Way/Basic
Dec 2026
From$199*
Seen: 21 hrs ago
One Way/Basic
Jan 2027
From$199*
Seen: 21 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $199
cmp-daily-histogram-bars-legend-max-price-aria-label $589
Displaying fares for November-2026
  • ONT–MSY, 11/08/2026: From $589
    08

    Sun

    NOV

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    Wed

  • ONT–MSY, 11/12/2026: From $589
    12

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    13

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    15

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    16

    Mon

  • ONT–MSY, 11/17/2026: From $481
    17

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    18

    Wed

  • ONT–MSY, 11/19/2026: From $481
    19

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  • ONT–MSY, 11/20/2026: From $481
    20

    Fri

  • ONT–MSY, 11/21/2026: From $329
    21

    Sat

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    22

    Sun

  • ONT–MSY, 11/23/2026: From $329
    23

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    24

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  • ONT–MSY, 11/25/2026: From $329
    25

    Wed

  • ONT–MSY, 11/26/2026: From $329
    26

    Thu

  • ONT–MSY, 11/27/2026: From $329
    27

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    28

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    29

    Sun

  • ONT–MSY, 11/30/2026: From $319
    30

    Mon

  • ONT–MSY, 12/01/2026: From $199
    01

    Tue

    DEC

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    02

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    03

    Thu

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    04

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  • ONT–MSY, 12/05/2026: From $199
    05

    Sat

  • ONT–MSY, 12/06/2026: From $289
    06

    Sun

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    07

    Mon

    • Range$199-$589

    *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

    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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