Southwest® flights from Las Vegas to Ontario/LA from $90

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Low fares from Las Vegas to Ontario/LA

$

Las Vegas (LAS)to

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

One-way

Basic

From
$90
Seen: 17 hrs ago

Las Vegas (LAS)to

Ontario/LA (ONT)
Depart: 10/12/2026

One-way

Basic

From
$90
Seen: 13 hrs ago

Las Vegas (LAS)to

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

One-way

Basic

From
$90
Seen: 13 hrs ago

Las Vegas (LAS)to

Ontario/LA (ONT)
Depart: 10/28/2026

One-way

Basic

From
$90
Seen: 15 hrs ago

Las Vegas (LAS)to

Ontario/LA (ONT)
Depart: 10/21/2026

One-way

Basic

From
$90
Seen: 13 hrs ago

Las Vegas (LAS)to

Ontario/LA (ONT)
Depart: 11/07/2026

One-way

Basic

From
$90
Seen: 13 hrs ago

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Explore flights from Las Vegas to Ontario/LA

Sep 2026
From$205*
Seen: 11 hrs ago
One Way/Basic
Oct 2026
From$90*
Seen: 17 hrs ago
One Way/Basic
Nov 2026
From$90*
Seen: 13 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $90
cmp-daily-histogram-bars-legend-max-price-aria-label $336
Displaying fares for September-2026
  • LAS–ONT: cmp-view-offers-disclaimer. Find Offers
    11

    Fri

    SEP

  • LAS–ONT, 09/12/2026: From $336
    12

    Sat

  • LAS–ONT: cmp-view-offers-disclaimer. Find Offers
    13

    Sun

  • LAS–ONT, 09/14/2026: From $336
    14

    Mon

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

    Tue

  • LAS–ONT, 09/16/2026: From $336
    16

    Wed

  • LAS–ONT, 09/17/2026: From $316
    17

    Thu

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

    Fri

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

    Sat

  • LAS–ONT, 09/20/2026: From $316
    20

    Sun

  • LAS–ONT, 09/21/2026: From $316
    21

    Mon

  • LAS–ONT, 09/22/2026: From $326
    22

    Tue

  • LAS–ONT, 09/23/2026: From $316
    23

    Wed

  • LAS–ONT: cmp-view-offers-disclaimer. Find Offers
    24

    Thu

  • LAS–ONT, 09/25/2026: From $205
    25

    Fri

  • LAS–ONT, 09/26/2026: From $205
    26

    Sat

  • LAS–ONT, 09/27/2026: From $215
    27

    Sun

  • LAS–ONT, 09/28/2026: From $205
    28

    Mon

  • LAS–ONT, 09/29/2026: From $205
    29

    Tue

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

    Wed

  • LAS–ONT, 10/01/2026: From $90
    01

    Thu

    OCT

  • LAS–ONT, 10/02/2026: From $117
    02

    Fri

  • LAS–ONT, 10/03/2026: From $109
    03

    Sat

  • LAS–ONT, 10/04/2026: From $185
    04

    Sun

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

    Mon

  • LAS–ONT, 10/06/2026: From $109
    06

    Tue

  • LAS–ONT, 10/07/2026: From $109
    07

    Wed

  • LAS–ONT: cmp-view-offers-disclaimer. Find Offers
    08

    Thu

  • LAS–ONT, 10/09/2026: From $90
    09

    Fri

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

    Sat

    • Range$90-$336

    *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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