American Airlines flights from Indianapolis to Ontario

Recent searches for flights from Indianapolis to Ontario

Aug 2026
From$677*
Updated: 5 hours ago
Round tripIEconomy
Sep 2026
From$377*
Updated: 54 minutes ago
Round tripIEconomy
Oct 2026
From$377*
Updated: 54 minutes ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $377
cmp-daily-histogram-bars-legend-max-price-aria-label $1.1K
Displaying fares for August-2026
  • IND–ONT, 08/20/26 – 08/27/26: From $1,077
    20

    Th

    AUG

  • IND–ONT, 08/21/26 – 08/28/26: From $1,077
    21

    Fr

  • IND–ONT, 08/22/26 – 09/04/26: From $677
    22

    Sa

  • IND–ONT, 08/23/26 – 08/30/26: From $1,077
    23

    Su

  • IND–ONT, 08/24/26 – 08/31/26: From $1,077
    24

    Mo

  • IND–ONT, 08/25/26 – 09/01/26: From $1,031
    25

    Tu

  • IND–ONT, 08/26/26 – 09/02/26: From $812
    26

    We

  • IND–ONT, 08/27/26 – 09/03/26: From $857
    27

    Th

  • IND–ONT, 08/28/26 – 09/04/26: From $857
    28

    Fr

  • IND–ONT, 08/29/26 – 09/05/26: From $812
    29

    Sa

  • IND–ONT, 08/30/26 – 09/06/26: From $857
    30

    Su

  • IND–ONT, 08/31/26 – 09/07/26: From $942
    31

    Mo

  • IND–ONT, 09/01/26 – 09/08/26: From $812
    01

    Tu

    SEP

  • IND–ONT, 09/02/26 – 09/09/26: From $529
    02

    We

  • IND–ONT, 09/03/26 – 09/10/26: From $492
    03

    Th

  • IND–ONT, 09/04/26 – 09/11/26: From $510
    04

    Fr

  • IND–ONT, 09/05/26 – 09/12/26: From $377
    05

    Sa

  • IND–ONT, 09/06/26 – 09/13/26: From $462
    06

    Su

  • IND–ONT, 09/07/26 – 09/14/26: From $733
    07

    Mo

  • IND–ONT, 09/08/26 – 09/15/26: From $497
    08

    Tu

  • IND–ONT, 09/09/26 – 09/16/26: From $419
    09

    We

  • IND–ONT, 09/10/26 – 09/17/26: From $382
    10

    Th

  • IND–ONT, 09/11/26 – 09/18/26: From $636
    11

    Fr

  • IND–ONT, 09/12/26 – 09/19/26: From $377
    12

    Sa

  • IND–ONT, 09/13/26 – 09/20/26: From $517
    13

    Su

  • IND–ONT, 09/14/26 – 09/21/26: From $577
    14

    Mo

  • IND–ONT, 09/15/26 – 09/22/26: From $377
    15

    Tu

  • IND–ONT, 09/16/26 – 09/23/26: From $414
    16

    We

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

    Th

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

    Fr

  • IND–ONT, 09/19/26 – 09/26/26: From $377
    19

    Sa

    • range$377-$1,077

    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 Indianapolis to Ontario flights

    $
    keyboard_arrow_down

    Indianapolis (IND)to

    Ontario (ONT)
    09/23/26 - 09/30/26

    Round trip

    Economy

    from
    $377Fare subject to changes
    Updated: 54 minutes ago

    Indianapolis (IND)to

    Ontario (ONT)
    11/02/26 - 11/09/26

    Round trip

    Economy

    from
    $377Fare subject to changes
    Updated: 54 minutes ago

    Indianapolis (IND)to

    Ontario (ONT)
    11/03/26 - 11/10/26

    Round trip

    Economy

    from
    $377Fare subject to changes
    Updated: 54 minutes ago

    Indianapolis (IND)to

    Ontario (ONT)
    11/09/26 - 11/16/26

    Round trip

    Economy

    from
    $377Fare subject to changes
    Updated: 54 minutes ago

    Indianapolis (IND)to

    Ontario (ONT)
    11/12/26 - 11/19/26

    Round trip

    Economy

    from
    $377Fare subject to changes
    Updated: 54 minutes ago

    Indianapolis (IND)to

    Ontario (ONT)
    10/14/26 - 10/21/26

    Round trip

    Economy

    from
    $377Fare subject to changes
    Updated: 54 minutes ago

    Indianapolis (IND)to

    Ontario (ONT)
    10/20/26 - 10/27/26

    Round trip

    Economy

    from
    $377Fare subject to changes
    Updated: 54 minutes ago

    Indianapolis (IND)to

    Ontario (ONT)
    10/24/26 - 10/31/26

    Round trip

    Economy

    from
    $377Fare subject to changes
    Updated: 54 minutes 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 Indianapolis to Ontario

    Looking for lower fares on your trip from Indianapolis to Ontario? 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 Indianapolis to Ontario