American Airlines flights from Kalispell to Ontario

Recent searches for flights from Kalispell to Ontario

Aug 2026
From$542*
Updated: 4 hours ago
Round tripIEconomy
Sep 2026
From$307*
Updated: 4 hours ago
Round tripIEconomy
Oct 2026
From$512*
Updated: 4 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $542
cmp-daily-histogram-bars-legend-max-price-aria-label $1.4K
Displaying fares for August-2026
  • FCA–ONT, 08/11/26 – 08/18/26: From $687
    11

    Tu

    AUG

  • FCA–ONT, 08/12/26 – 08/19/26: From $950
    12

    We

  • FCA–ONT, 08/13/26 – 08/20/26: From $800
    13

    Th

  • FCA–ONT, 08/14/26 – 08/21/26: From $762
    14

    Fr

  • FCA–ONT, 08/15/26 – 08/22/26: From $791
    15

    Sa

  • FCA–ONT, 08/16/26 – 08/23/26: From $953
    16

    Su

  • FCA–ONT, 08/17/26 – 08/24/26: From $711
    17

    Mo

  • FCA–ONT, 08/18/26 – 08/25/26: From $707
    18

    Tu

  • FCA–ONT, 08/19/26 – 08/26/26: From $627
    19

    We

  • FCA–ONT, 08/20/26 – 08/27/26: From $723
    20

    Th

  • FCA–ONT, 08/21/26 – 08/28/26: From $542
    21

    Fr

  • FCA–ONT, 08/22/26 – 08/29/26: From $711
    22

    Sa

  • FCA–ONT, 08/23/26 – 08/30/26: From $681
    23

    Su

  • FCA–ONT, 08/24/26 – 08/31/26: From $626
    24

    Mo

  • FCA–ONT, 08/25/26 – 09/01/26: From $601
    25

    Tu

  • FCA–ONT, 08/26/26 – 09/02/26: From $569
    26

    We

  • FCA–ONT, 08/27/26 – 09/03/26: From $826
    27

    Th

  • FCA–ONT, 08/28/26 – 09/04/26: From $697
    28

    Fr

  • FCA–ONT, 08/29/26 – 09/05/26: From $652
    29

    Sa

  • FCA–ONT, 08/30/26 – 09/06/26: From $1,376
    30

    Su

  • FCA–ONT, 08/31/26 – 09/07/26: From $863
    31

    Mo

  • FCA–ONT, 09/01/26 – 09/08/26: From $789
    01

    Tu

    SEP

  • FCA–ONT, 09/02/26 – 09/09/26: From $903
    02

    We

  • FCA–ONT, 09/03/26 – 09/10/26: From $629
    03

    Th

  • FCA–ONT, 09/04/26 – 09/11/26: From $781
    04

    Fr

  • FCA–ONT, 09/05/26 – 09/12/26: From $729
    05

    Sa

  • FCA–ONT, 09/06/26 – 09/13/26: From $1,011
    06

    Su

  • FCA–ONT, 09/07/26 – 09/14/26: From $1,136
    07

    Mo

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

    Tu

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

    We

  • FCA–ONT, 09/10/26 – 09/17/26: From $740
    10

    Th

    • range$542-$1,376

    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 Kalispell to Ontario flights

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    Kalispell (FCA)to

    Ontario (ONT)
    09/22/26 - 09/29/26

    Round trip

    Economy

    from
    $307Fare subject to changes
    Updated: 4 hours ago

    Kalispell (FCA)to

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

    Round trip

    Economy

    from
    $371Fare subject to changes
    Updated: 4 hours ago

    Kalispell (FCA)to

    Ontario (ONT)
    09/16/26 - 09/23/26

    Round trip

    Economy

    from
    $455Fare subject to changes
    Updated: 4 hours ago

    Kalispell (FCA)to

    Ontario (ONT)
    09/24/26 - 10/01/26

    Round trip

    Economy

    from
    $455Fare subject to changes
    Updated: 4 hours ago

    Kalispell (FCA)to

    Ontario (ONT)
    09/15/26 - 09/22/26

    Round trip

    Economy

    from
    $496Fare subject to changes
    Updated: 4 hours ago

    Kalispell (FCA)to

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

    Round trip

    Economy

    from
    $512Fare subject to changes
    Updated: 4 hours ago

    Kalispell (FCA)to

    Ontario (ONT)
    08/21/26 - 08/28/26

    Round trip

    Economy

    from
    $542Fare subject to changes
    Updated: 4 hours ago

    Kalispell (FCA)to

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

    Round trip

    Economy

    from
    $549Fare subject to changes
    Updated: 4 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 Kalispell to Ontario

    Looking for lower fares on your trip from Kalispell 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 Kalispell to Ontario