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

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Low fares from Ontario/LA to New York LaGuardia

$

Ontario/LA (ONT)to

New York LaGuardia (LGA)
Depart: 12/05/2026

One-way

Basic

From
$154
Seen: 17 hrs ago

Ontario/LA (ONT)to

New York LaGuardia (LGA)
Depart: 11/03/2026

One-way

Basic

From
$154
Seen: 12 hrs ago

Ontario/LA (ONT)to

New York LaGuardia (LGA)
Depart: 11/02/2026

One-way

Basic

From
$154
Seen: 11 hrs ago

Ontario/LA (ONT)to

New York LaGuardia (LGA)
Depart: 11/04/2026

One-way

Basic

From
$154
Seen: 11 hrs ago

Ontario/LA (ONT)to

New York LaGuardia (LGA)
Depart: 11/18/2026

One-way

Basic

From
$154
Seen: 12 hrs ago

Ontario/LA (ONT)to

New York LaGuardia (LGA)
Depart: 12/02/2026

One-way

Basic

From
$154
Seen: 19 hrs ago

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Explore flights from Ontario/LA to New York LaGuardia

Sep 2026
From$190*
Seen: 2 hrs ago
One Way/Basic
Oct 2026
From$154*
Seen: 2 hrs ago
One Way/Basic
Nov 2026
From$154*
Seen: 11 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $190
cmp-daily-histogram-bars-legend-max-price-aria-label $367
Displaying fares for September-2026
  • ONT–LGA: cmp-view-offers-disclaimer. Find Offers
    11

    Fri

    SEP

  • ONT–LGA, 09/12/2026: From $348
    12

    Sat

  • ONT–LGA, 09/13/2026: From $367
    13

    Sun

  • ONT–LGA, 09/14/2026: From $357
    14

    Mon

  • ONT–LGA, 09/15/2026: From $338
    15

    Tue

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

    Wed

  • ONT–LGA, 09/17/2026: From $270
    17

    Thu

  • ONT–LGA, 09/18/2026: From $270
    18

    Fri

  • ONT–LGA, 09/19/2026: From $209
    19

    Sat

  • ONT–LGA, 09/20/2026: From $301
    20

    Sun

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

    Mon

  • ONT–LGA, 09/22/2026: From $219
    22

    Tue

  • ONT–LGA, 09/23/2026: From $209
    23

    Wed

  • ONT–LGA, 09/24/2026: From $250
    24

    Thu

  • ONT–LGA, 09/25/2026: From $255
    25

    Fri

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

    Sat

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

    Sun

  • ONT–LGA, 09/28/2026: From $230
    28

    Mon

  • ONT–LGA, 09/29/2026: From $190
    29

    Tue

  • ONT–LGA, 09/30/2026: From $205
    30

    Wed

  • ONT–LGA, 10/01/2026: From $269
    01

    Thu

    OCT

  • ONT–LGA, 10/02/2026: From $249
    02

    Fri

  • ONT–LGA, 10/03/2026: From $235
    03

    Sat

  • ONT–LGA, 10/04/2026: From $264
    04

    Sun

  • ONT–LGA, 10/05/2026: From $209
    05

    Mon

  • ONT–LGA, 10/06/2026: From $209
    06

    Tue

  • ONT–LGA, 10/07/2026: From $254
    07

    Wed

  • ONT–LGA, 10/08/2026: From $367
    08

    Thu

  • ONT–LGA, 10/09/2026: From $357
    09

    Fri

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

    Sat

    • Range$190-$367

    *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:
    La Guardia Airport
    Distance:
    2424 miles

    Route Information

    95† 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 95 weekly flights from Ontario/LA to New York (LaGuardia) on Southwest Airlines.
    To find the lowest fares by day and time to fly Ontario/LA to New York (LaGuardia) with Southwest, check out our Low Fare Calendar.
    You can rent a car at La Guardia Airport book yours with your flight.
    Yes! Flights from Ontario/LA to New York (LaGuardia)—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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