Southwest® flights from Las Vegas to Ontario/LA from $109

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Low fares from Las Vegas to Ontario/LA

$

Las Vegas (LAS)to

Ontario/LA (ONT)
Depart: 09/11/2026

One-way

Basic

From
$109
Seen: 22 hrs ago

Las Vegas (LAS)to

Ontario/LA (ONT)
Depart: 09/05/2026

One-way

Basic

From
$109
Seen: 16 hrs ago

Las Vegas (LAS)to

Ontario/LA (ONT)
Depart: 09/15/2026

One-way

Basic

From
$118
Seen: 21 hrs ago

Las Vegas (LAS)to

Ontario/LA (ONT)
Depart: 09/16/2026

One-way

Basic

From
$118
Seen: 21 hrs ago

Las Vegas (LAS)to

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

One-way

Basic

From
$118
Seen: 12 hrs ago

Las Vegas (LAS)to

Ontario/LA (ONT)
Depart: 09/10/2026

One-way

Basic

From
$118
Seen: 3 hrs ago

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Explore flights from Las Vegas to Ontario/LA

Aug 2026
From$118*
Seen: 1 hour ago
One Way/Basic
Sep 2026
From$109*
Seen: 22 hrs ago
One Way/Basic
Oct 2026
From$118*
Seen: 23 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $118
cmp-daily-histogram-bars-legend-max-price-aria-label $321
Displaying fares for August-2026
  • LAS–ONT, 08/01/2026: From $321
    01

    Sat

    AUG

  • LAS–ONT, 08/02/2026: From $321
    02

    Sun

  • LAS–ONT, 08/03/2026: From $321
    03

    Mon

  • LAS–ONT, 08/04/2026: From $321
    04

    Tue

  • LAS–ONT, 08/05/2026: From $321
    05

    Wed

  • LAS–ONT, 08/06/2026: From $321
    06

    Thu

  • LAS–ONT, 08/07/2026: From $306
    07

    Fri

  • LAS–ONT, 08/08/2026: From $306
    08

    Sat

  • LAS–ONT, 08/09/2026: From $306
    09

    Sun

  • LAS–ONT, 08/10/2026: From $306
    10

    Mon

  • LAS–ONT, 08/11/2026: From $306
    11

    Tue

  • LAS–ONT, 08/12/2026: From $306
    12

    Wed

  • LAS–ONT, 08/13/2026: From $306
    13

    Thu

  • LAS–ONT, 08/14/2026: From $195
    14

    Fri

  • LAS–ONT, 08/15/2026: From $195
    15

    Sat

  • LAS–ONT, 08/16/2026: From $195
    16

    Sun

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

    Mon

  • LAS–ONT: cmp-view-offers-disclaimer. Find Offers
    18

    Tue

  • LAS–ONT, 08/19/2026: From $195
    19

    Wed

  • LAS–ONT, 08/20/2026: From $195
    20

    Thu

  • LAS–ONT, 08/21/2026: From $132
    21

    Fri

  • LAS–ONT, 08/22/2026: From $118
    22

    Sat

  • LAS–ONT, 08/23/2026: From $175
    23

    Sun

  • LAS–ONT, 08/24/2026: From $118
    24

    Mon

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

    Tue

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

    Wed

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

    Thu

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

    Fri

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

    Sat

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    30

    Sun

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

    Mon

    • Range$118-$321

    *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:
    McCarran International Airport
    Arriving at:
    LA/Ontario International Airport
    Average flight time:
    1 hour 4 minutes
    Distance:
    197 miles

    Route Information

    153† Weekly flights
    • 5‡ Nonstop flights per day Monday through Friday
    • 4‡ Nonstop flights on Saturday
    • 5‡ Nonstop flights on Sunday

    † 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

    The average flight time from Las Vegas to Ontario/LA is 1 hour 4 minutes.
    There are 153 weekly flights from Las Vegas to Ontario/LA on Southwest Airlines.
    Yes, Southwest flies nonstop from Las Vegas to Ontario/LA 5 times per day from Monday through Friday.
    Yes, Southwest flies nonstop from Las Vegas to Ontario/LA 4 times per day on Saturdays and 5 times per day on Sundays.
    To find the lowest fares by day and time to fly Las Vegas 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 Las Vegas 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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