Southwest® flights from New York LaGuardia to Ontario/LA from $179

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Low fares from New York LaGuardia to Ontario/LA

$

New York LaGuardia (LGA)to

Ontario/LA (ONT)
Depart: 12/11/2026

One-way

Basic

From
$179
Seen: 11 hrs ago

New York LaGuardia (LGA)to

Ontario/LA (ONT)
Depart: 12/04/2026

One-way

Basic

From
$179
Seen: 16 hrs ago

New York LaGuardia (LGA)to

Ontario/LA (ONT)
Depart: 12/08/2026

One-way

Basic

From
$179
Seen: 23 hrs ago

New York LaGuardia (LGA)to

Ontario/LA (ONT)
Depart: 12/09/2026

One-way

Basic

From
$179
Seen: 1 hour ago

New York LaGuardia (LGA)to

Ontario/LA (ONT)
Depart: 12/05/2026

One-way

Basic

From
$210
Seen: 10 hrs ago

New York LaGuardia (LGA)to

Ontario/LA (ONT)
Depart: 12/11/2026

One-way

Choice

From
$234
Seen: 11 hrs ago

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Explore flights from New York LaGuardia to Ontario/LA

Nov 2026
From$234*
Seen: 1 hour ago
One Way/Basic
Dec 2026
From$179*
Seen: 11 hrs ago
One Way/Basic
Jan 2027
From$239*
Seen: 13 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $179
cmp-daily-histogram-bars-legend-max-price-aria-label $669
Displaying fares for November-2026
  • LGA–ONT, 11/12/2026: From $377
    12

    Thu

    NOV

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    13

    Fri

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    14

    Sat

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    15

    Sun

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    16

    Mon

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    17

    Tue

  • LGA–ONT, 11/18/2026: From $234
    18

    Wed

  • LGA–ONT, 11/19/2026: From $265
    19

    Thu

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    20

    Fri

  • LGA–ONT, 11/21/2026: From $285
    21

    Sat

  • LGA–ONT, 11/22/2026: From $260
    22

    Sun

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    23

    Mon

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    24

    Tue

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    25

    Wed

  • LGA–ONT, 11/26/2026: From $335
    26

    Thu

  • LGA–ONT, 11/27/2026: From $477
    27

    Fri

  • LGA–ONT, 11/28/2026: From $669
    28

    Sat

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

    Sun

  • LGA–ONT, 11/30/2026: From $485
    30

    Mon

  • LGA–ONT, 12/01/2026: From $294
    01

    Tue

    DEC

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    02

    Wed

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    03

    Thu

  • LGA–ONT, 12/04/2026: From $179
    04

    Fri

  • LGA–ONT, 12/05/2026: From $210
    05

    Sat

  • LGA–ONT, 12/06/2026: From $295
    06

    Sun

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

    Mon

  • LGA–ONT, 12/08/2026: From $179
    08

    Tue

  • LGA–ONT, 12/09/2026: From $179
    09

    Wed

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

    Thu

  • LGA–ONT, 12/11/2026: From $179
    11

    Fri

    • Range$179-$669

    *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

    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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