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

Promo Code

Low fares from New Orleans to Ontario/LA

$

New Orleans (MSY)to

Ontario/LA (ONT)
Depart: 10/19/2026

One-way

Basic

From
$189
Seen: 21 hrs ago

New Orleans (MSY)to

Ontario/LA (ONT)
Depart: 10/08/2026

One-way

Basic

From
$189
Seen: 15 hrs ago

New Orleans (MSY)to

Ontario/LA (ONT)
Depart: 11/03/2026

One-way

Basic

From
$189
Seen: 15 hrs ago

New Orleans (MSY)to

Ontario/LA (ONT)
Depart: 10/28/2026

One-way

Basic

From
$189
Seen: 23 hrs ago

New Orleans (MSY)to

Ontario/LA (ONT)
Depart: 11/17/2026

One-way

Basic

From
$189
Seen: 9 hrs ago

New Orleans (MSY)to

Ontario/LA (ONT)
Depart: 10/01/2026

One-way

Basic

From
$189
Seen: 13 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 New Orleans to Ontario/LA

Aug 2026
From$456*
Seen: 14 hrs ago
One Way/Basic
Sep 2026
From$207*
Seen: 2 hrs ago
One Way/Basic
Oct 2026
From$189*
Seen: 23 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $207
cmp-daily-histogram-bars-legend-max-price-aria-label $564
Displaying fares for August-2026
  • MSY–ONT, 08/23/2026: From $564
    23

    Sun

    AUG

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

    Mon

  • MSY–ONT: cmp-view-offers-disclaimer. Find Offers
    25

    Tue

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

    Wed

  • MSY–ONT: cmp-view-offers-disclaimer. Find Offers
    27

    Thu

  • MSY–ONT: cmp-view-offers-disclaimer. Find Offers
    28

    Fri

  • MSY–ONT, 08/29/2026: From $456
    29

    Sat

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

    Sun

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

    Mon

  • MSY–ONT, 09/01/2026: From $456
    01

    Tue

    SEP

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

    Wed

  • MSY–ONT, 09/03/2026: From $456
    03

    Thu

  • MSY–ONT, 09/04/2026: From $456
    04

    Fri

  • MSY–ONT, 09/05/2026: From $456
    05

    Sat

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

    Sun

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

    Mon

  • MSY–ONT, 09/08/2026: From $304
    08

    Tue

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

    Wed

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

    Thu

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

    Fri

  • MSY–ONT: cmp-view-offers-disclaimer. Find Offers
    12

    Sat

  • MSY–ONT: cmp-view-offers-disclaimer. Find Offers
    13

    Sun

  • MSY–ONT, 09/14/2026: From $231
    14

    Mon

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

    Tue

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

    Wed

  • MSY–ONT: cmp-view-offers-disclaimer. Find Offers
    17

    Thu

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

    Fri

  • MSY–ONT, 09/19/2026: From $231
    19

    Sat

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

    Sun

  • MSY–ONT: cmp-view-offers-disclaimer. Find Offers
    21

    Mon

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

    Tue

    • Range$207-$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:
    Louis Armstrong International Airport
    Arriving at:
    LA/Ontario International Airport
    Distance:
    1624 miles

    Route Information

    146† 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 146 weekly flights from New Orleans to Ontario/LA on Southwest Airlines.
    To find the lowest fares by day and time to fly New Orleans 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 New Orleans 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.

    Explore Flights from Other Popular Origins

    Popular Flights from New Orleans