American Airlines flights from Ontario to Las Vegas

Recent searches for flights from Ontario to Las Vegas

Aug 2026
From$257*
Updated: 2 hours ago
Round tripIEconomy
Sep 2026
From$257*
Updated: 2 hours ago
Round tripIEconomy
Oct 2026
From$274*
Updated: 2 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $257
cmp-daily-histogram-bars-legend-max-price-aria-label $569
Displaying fares for August-2026
  • ONT–LAS: cmp-view-offers-disclaimer. Find Offers
    04

    Tu

    AUG

  • ONT–LAS, 08/05/26 – 08/12/26: From $351
    05

    We

  • ONT–LAS, 08/06/26 – 08/13/26: From $569
    06

    Th

  • ONT–LAS, 08/07/26 – 08/14/26: From $481
    07

    Fr

  • ONT–LAS, 08/08/26 – 08/15/26: From $351
    08

    Sa

  • ONT–LAS, 08/09/26 – 08/16/26: From $514
    09

    Su

  • ONT–LAS, 08/10/26 – 08/17/26: From $351
    10

    Mo

  • ONT–LAS, 08/11/26 – 08/18/26: From $351
    11

    Tu

  • ONT–LAS, 08/12/26 – 08/19/26: From $351
    12

    We

  • ONT–LAS, 08/13/26 – 08/16/26: From $349
    13

    Th

  • ONT–LAS, 08/14/26 – 08/21/26: From $351
    14

    Fr

  • ONT–LAS, 08/15/26 – 08/22/26: From $351
    15

    Sa

  • ONT–LAS, 08/16/26 – 08/23/26: From $514
    16

    Su

  • ONT–LAS, 08/17/26 – 08/24/26: From $351
    17

    Mo

  • ONT–LAS, 08/18/26 – 08/25/26: From $340
    18

    Tu

  • ONT–LAS, 08/19/26 – 08/26/26: From $340
    19

    We

  • ONT–LAS, 08/20/26 – 08/27/26: From $340
    20

    Th

  • ONT–LAS, 08/21/26 – 08/28/26: From $351
    21

    Fr

  • ONT–LAS, 08/22/26 – 08/29/26: From $340
    22

    Sa

  • ONT–LAS, 08/23/26 – 08/30/26: From $369
    23

    Su

  • ONT–LAS, 08/24/26 – 08/31/26: From $351
    24

    Mo

  • ONT–LAS, 08/25/26 – 09/01/26: From $291
    25

    Tu

  • ONT–LAS, 08/26/26 – 09/02/26: From $291
    26

    We

  • ONT–LAS, 08/27/26 – 09/03/26: From $291
    27

    Th

  • ONT–LAS, 08/28/26 – 09/04/26: From $329
    28

    Fr

  • ONT–LAS, 08/29/26 – 09/05/26: From $257
    29

    Sa

  • ONT–LAS, 08/30/26 – 09/06/26: From $452
    30

    Su

  • ONT–LAS, 08/31/26 – 09/03/26: From $320
    31

    Mo

  • ONT–LAS: cmp-view-offers-disclaimer. Find Offers
    01

    Tu

    SEP

  • ONT–LAS: cmp-view-offers-disclaimer. Find Offers
    02

    We

  • ONT–LAS, 09/03/26 – 09/06/26: From $432
    03

    Th

    • range$257-$569

    DisclaimerFares displayed have been collected within the last 24hrs and may no longer be available at time of booking. Modifying this information may result in a different fare. To find the most updated fare, please visit aa.com. Fares listed may be Basic Economy, which class is subject to additional terms and conditions. Additional baggage fees and charges for optional products and services may apply.

    Find deals on Ontario to Las Vegas flights

    $
    keyboard_arrow_down

    Ontario (ONT)to

    Las Vegas (LAS)
    09/05/26 - 09/12/26

    Round trip

    Economy

    from
    $257Fare subject to changes
    Updated: 2 hours ago

    Ontario (ONT)to

    Las Vegas (LAS)
    08/29/26 - 09/05/26

    Round trip

    Economy

    from
    $257Fare subject to changes
    Updated: 2 hours ago

    Ontario (ONT)to

    Las Vegas (LAS)
    09/06/26 - 09/13/26

    Round trip

    Economy

    from
    $266Fare subject to changes
    Updated: 2 hours ago

    Ontario (ONT)to

    Las Vegas (LAS)
    10/29/26 - 11/05/26

    Round trip

    Economy

    from
    $274Fare subject to changes
    Updated: 2 hours ago

    Ontario (ONT)to

    Las Vegas (LAS)
    09/11/26 - 09/18/26

    Round trip

    Economy

    from
    $283Fare subject to changes
    Updated: 2 hours ago

    Ontario (ONT)to

    Las Vegas (LAS)
    10/23/26 - 10/30/26

    Round trip

    Economy

    from
    $283Fare subject to changes
    Updated: 2 hours ago

    Ontario (ONT)to

    Las Vegas (LAS)
    10/10/26 - 10/17/26

    Round trip

    Economy

    from
    $291Fare subject to changes
    Updated: 2 hours ago

    Ontario (ONT)to

    Las Vegas (LAS)
    09/15/26 - 09/22/26

    Round trip

    Economy

    from
    $291Fare subject to changes
    Updated: 2 hours ago

    *Fares displayed have been collected within the last 24hrs and may no longer be available at time of booking. Some fares listed may include one or more connections that are Basic Economy, which class is subject to additional terms and conditions. Modifying this information may result in a different fare. To find the most updated fare, please visit aa.com. Additional baggage fees and charges for optional products and services may apply.

    Finding cheap flights from Ontario to Las Vegas

    Looking for lower fares on your trip from Ontario to Las Vegas? Here are a few ways to save.

    • Book early: Booking 1 to 3 months ahead can help you find lower fares
    • Be flexible with dates: Midweek travel, like Tuesdays and Wednesdays, can be more affordable
    • Travel during less busy periods: Flying outside peak travel times can help find lower fares and avoid crowds

    Earn up to $500 back on your next American Airlines flight plus, 30,000 bonus miles. Offers vary elsewhere. Opens another site in a new window that may not meet accessibility guidelines.

    Upgrade your flight with Main Cabin Extra

    Make your trip more comfortable with Main Cabin Extra. Enjoy benefits like:

    • Extra legroom: More space with seats at the front of the Main Cabin or in exit rows.
    • Early boarding: Preferred Group 5 boarding allows easier access to overhead bins.
    • Complimentary drinks: Enjoy beer, wine and spirits on flights with full beverage service.

    Discover how Main Cabin Extra can enhance your trip.

    American Airlines flights from Ontario to Las Vegas