Southwest® flights from Ontario/LA to New Orleans from $167

Promo Code

Low fares from Ontario/LA to New Orleans

$

Ontario/LA (ONT)to

New Orleans (MSY)
Depart: 11/05/2026

One-way

Basic

From
$167
Seen: 16 hrs ago

Ontario/LA (ONT)to

New Orleans (MSY)
Depart: 11/03/2026

One-way

Basic

From
$167
Seen: 19 hrs ago

Ontario/LA (ONT)to

New Orleans (MSY)
Depart: 09/01/2026

One-way

Basic

From
$167
Seen: 8 hrs ago

Ontario/LA (ONT)to

New Orleans (MSY)
Depart: 08/24/2026

One-way

Basic

From
$167
Seen: 6 hrs ago

Ontario/LA (ONT)to

New Orleans (MSY)
Depart: 10/06/2026

One-way

Basic

From
$167
Seen: 19 hrs ago

Ontario/LA (ONT)to

New Orleans (MSY)
Depart: 08/22/2026

One-way

Basic

From
$167
Seen: 18 hrs ago

Looking for more low-fare flights?

Check out the Low Fare Calendar to find a fare that works for you. Just choose the month you want to depart and return, and we’ll show you the best fares available.

Find low fares

Explore flights from Ontario/LA to New Orleans

Try alternate month or interact with individual days below in order to find offers.
Jul 2026
No result for this month.
Aug 2026
From$167*
Seen: 6 hrs ago
One Way/Basic
Sep 2026
From$167*
Seen: 10 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $167
cmp-daily-histogram-bars-legend-max-price-aria-label $466
Displaying fares for July-2026
  • ONT–MSY: cmp-view-offers-disclaimer. Find Offers
    31

    Fri

    JUL

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

    Sat

  • ONT–MSY: cmp-view-offers-disclaimer. Find Offers
    02

    Sun

  • ONT–MSY: cmp-view-offers-disclaimer. Find Offers
    03

    Mon

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

    Tue

  • ONT–MSY, 08/05/2026: From $456
    05

    Wed

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

    Thu

  • ONT–MSY: cmp-view-offers-disclaimer. Find Offers
    07

    Fri

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

    Sat

  • ONT–MSY, 08/09/2026: From $466
    09

    Sun

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

    Mon

  • ONT–MSY, 08/11/2026: From $466
    11

    Tue

  • ONT–MSY, 08/12/2026: From $466
    12

    Wed

  • ONT–MSY, 08/13/2026: From $304
    13

    Thu

  • ONT–MSY, 08/14/2026: From $304
    14

    Fri

  • ONT–MSY, 08/15/2026: From $304
    15

    Sat

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

    Sun

  • ONT–MSY, 08/17/2026: From $304
    17

    Mon

  • ONT–MSY, 08/18/2026: From $304
    18

    Tue

  • ONT–MSY: cmp-view-offers-disclaimer. Find Offers
    19

    Wed

  • ONT–MSY: cmp-view-offers-disclaimer. Find Offers
    20

    Thu

  • ONT–MSY, 08/21/2026: From $215
    21

    Fri

  • ONT–MSY, 08/22/2026: From $167
    22

    Sat

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

    Sun

  • ONT–MSY, 08/24/2026: From $167
    24

    Mon

  • ONT–MSY, 08/25/2026: From $167
    25

    Tue

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

    Wed

  • ONT–MSY, 08/27/2026: From $167
    27

    Thu

  • ONT–MSY, 08/28/2026: From $215
    28

    Fri

  • ONT–MSY: cmp-view-offers-disclaimer. Find Offers
    29

    Sat

  • ONT–MSY, 08/30/2026: From $244
    30

    Sun

    • Range$167-$466

    *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.

    Explore Flights from Other Popular Origins

    Popular Flights from Ontario/LA