Southwest® flights from New York LaGuardia to Ontario/LA from $154

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Low fares from New York LaGuardia to Ontario/LA

$

New York LaGuardia (LGA)to

Ontario/LA (ONT)
Depart: 12/02/2026

One-way

Basic

From
$154
Seen: 20 hrs ago

New York LaGuardia (LGA)to

Ontario/LA (ONT)
Depart: 11/18/2026

One-way

Basic

From
$154
Seen: 23 hrs ago

New York LaGuardia (LGA)to

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

One-way

Basic

From
$154
Seen: 14 hrs ago

New York LaGuardia (LGA)to

Ontario/LA (ONT)
Depart: 10/20/2026

One-way

Basic

From
$159
Seen: 18 hrs ago

New York LaGuardia (LGA)to

Ontario/LA (ONT)
Depart: 10/02/2026

One-way

Basic

From
$164
Seen: 20 hrs ago

New York LaGuardia (LGA)to

Ontario/LA (ONT)
Depart: 10/16/2026

One-way

Basic

From
$164
Seen: 9 hrs ago

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Explore flights from New York LaGuardia to Ontario/LA

Sep 2026
From$164*
Seen: 12 hrs ago
One Way/Basic
Oct 2026
From$159*
Seen: 18 hrs ago
One Way/Basic
Nov 2026
From$154*
Seen: 23 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $164
cmp-daily-histogram-bars-legend-max-price-aria-label $372
Displaying fares for September-2026
  • LGA–ONT, 09/12/2026: From $348
    12

    Sat

    SEP

  • LGA–ONT, 09/13/2026: From $357
    13

    Sun

  • LGA–ONT: cmp-view-offers-disclaimer. Find Offers
    14

    Mon

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

    Tue

  • LGA–ONT, 09/16/2026: From $348
    16

    Wed

  • LGA–ONT, 09/17/2026: From $372
    17

    Thu

  • LGA–ONT, 09/18/2026: From $335
    18

    Fri

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

    Sat

  • LGA–ONT, 09/20/2026: From $230
    20

    Sun

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

    Mon

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

    Tue

  • LGA–ONT, 09/23/2026: From $219
    23

    Wed

  • LGA–ONT, 09/24/2026: From $224
    24

    Thu

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

    Fri

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

    Sat

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

    Sun

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

    Mon

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

    Tue

  • LGA–ONT, 09/30/2026: From $164
    30

    Wed

  • LGA–ONT, 10/01/2026: From $240
    01

    Thu

    OCT

  • LGA–ONT, 10/02/2026: From $164
    02

    Fri

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

    Sat

  • LGA–ONT, 10/04/2026: From $314
    04

    Sun

  • LGA–ONT, 10/05/2026: From $241
    05

    Mon

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    06

    Tue

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    07

    Wed

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    08

    Thu

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

    Fri

  • LGA–ONT, 10/10/2026: From $245
    10

    Sat

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

    Sun

    • Range$164-$372

    *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 Guardia Airport
    Arriving at:
    LA/Ontario International Airport
    Distance:
    2424 miles

    Route Information

    105† 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 105 weekly flights from New York (LaGuardia) to Ontario/LA on Southwest Airlines.
    To find the lowest fares by day and time to fly New York (LaGuardia) 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 York (LaGuardia) 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.

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