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

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Low fares from Ontario/LA to Las Vegas

$

Ontario/LA (ONT)to

Las Vegas (LAS)
Depart: 11/17/2026

One-way

Basic

From
$109
Seen: 16 hrs ago

Ontario/LA (ONT)to

Las Vegas (LAS)
Depart: 12/16/2026

One-way

Basic

From
$109
Seen: 23 hrs ago

Ontario/LA (ONT)to

Las Vegas (LAS)
Depart: 11/09/2026

One-way

Basic

From
$109
Seen: 23 hrs ago

Ontario/LA (ONT)to

Las Vegas (LAS)
Depart: 11/07/2026

One-way

Basic

From
$109
Seen: 10 hrs ago

Ontario/LA (ONT)to

Las Vegas (LAS)
Depart: 12/10/2026

One-way

Basic

From
$109
Seen: 5 hrs ago

Ontario/LA (ONT)to

Las Vegas (LAS)
Depart: 12/24/2026

One-way

Basic

From
$109
Seen: 20 hrs ago

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Explore flights from Ontario/LA to Las Vegas

Oct 2026
From$109*
Seen: 17 hrs ago
One Way/Basic
Nov 2026
From$109*
Seen: 17 hrs ago
One Way/Basic
Dec 2026
From$109*
Seen: 10 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $109
cmp-daily-histogram-bars-legend-max-price-aria-label $346
Displaying fares for October-2026
  • ONT–LAS, 10/01/2026: From $346
    01

    Thu

    OCT

  • ONT–LAS, 10/02/2026: From $346
    02

    Fri

  • ONT–LAS, 10/03/2026: From $346
    03

    Sat

  • ONT–LAS, 10/04/2026: From $346
    04

    Sun

  • ONT–LAS: cmp-view-offers-disclaimer. Find Offers
    05

    Mon

  • ONT–LAS, 10/06/2026: From $346
    06

    Tue

  • ONT–LAS, 10/07/2026: From $326
    07

    Wed

  • ONT–LAS, 10/08/2026: From $326
    08

    Thu

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

    Fri

  • ONT–LAS, 10/10/2026: From $326
    10

    Sat

  • ONT–LAS, 10/11/2026: From $326
    11

    Sun

  • ONT–LAS, 10/12/2026: From $326
    12

    Mon

  • ONT–LAS, 10/13/2026: From $326
    13

    Tue

  • ONT–LAS, 10/14/2026: From $326
    14

    Wed

  • ONT–LAS, 10/15/2026: From $215
    15

    Thu

  • ONT–LAS, 10/16/2026: From $215
    16

    Fri

  • ONT–LAS, 10/17/2026: From $215
    17

    Sat

  • ONT–LAS, 10/18/2026: From $215
    18

    Sun

  • ONT–LAS, 10/19/2026: From $215
    19

    Mon

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

    Tue

  • ONT–LAS, 10/21/2026: From $215
    21

    Wed

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

    Thu

  • ONT–LAS, 10/23/2026: From $127
    23

    Fri

  • ONT–LAS, 10/24/2026: From $127
    24

    Sat

  • ONT–LAS, 10/25/2026: From $195
    25

    Sun

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

    Mon

  • ONT–LAS, 10/27/2026: From $109
    27

    Tue

  • ONT–LAS, 10/28/2026: From $109
    28

    Wed

  • ONT–LAS, 10/29/2026: From $109
    29

    Thu

  • ONT–LAS, 10/30/2026: From $127
    30

    Fri

  • ONT–LAS, 10/31/2026: From $109
    31

    Sat

    • Range$109-$346

    *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:
    McCarran International Airport
    Average flight time:
    1 hour 5 minutes
    Distance:
    197 miles

    Route Information

    156† 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 Ontario/LA to Las Vegas is 1 hour 5 minutes.
    There are 156 weekly flights from Ontario/LA to Las Vegas on Southwest Airlines.
    Yes, Southwest flies nonstop from Ontario/LA to Las Vegas 5 times per day from Monday through Friday.
    Yes, Southwest flies nonstop from Ontario/LA to Las Vegas 4 times per day on Saturdays and 5 times per day on Sundays.
    To find the lowest fares by day and time to fly Ontario/LA to Las Vegas with Southwest, check out our Low Fare Calendar.
    You can rent a car at McCarran International Airport book yours with your flight.
    Yes! Flights from Ontario/LA to Las Vegas—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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