American Airlines flights from Sioux Falls to Ontario

Recent searches for flights from Sioux Falls to Ontario

Aug 2026
From$330*
Updated: 1 hour ago
Round tripIEconomy
Sep 2026
From$321*
Updated: 1 hour ago
Round tripIEconomy
Oct 2026
From$321*
Updated: 1 hour ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $330
cmp-daily-histogram-bars-legend-max-price-aria-label $674
Displaying fares for August-2026
  • FSD–ONT, 08/05/26 – 08/12/26: From $425
    05

    We

    AUG

  • FSD–ONT, 08/06/26 – 08/13/26: From $674
    06

    Th

  • FSD–ONT, 08/07/26 – 08/14/26: From $509
    07

    Fr

  • FSD–ONT, 08/08/26 – 08/15/26: From $425
    08

    Sa

  • FSD–ONT, 08/09/26 – 08/16/26: From $645
    09

    Su

  • FSD–ONT, 08/10/26 – 08/17/26: From $645
    10

    Mo

  • FSD–ONT, 08/11/26 – 08/18/26: From $425
    11

    Tu

  • FSD–ONT, 08/12/26 – 08/19/26: From $452
    12

    We

  • FSD–ONT, 08/13/26 – 08/20/26: From $444
    13

    Th

  • FSD–ONT, 08/14/26 – 08/21/26: From $444
    14

    Fr

  • FSD–ONT, 08/15/26 – 08/22/26: From $417
    15

    Sa

  • FSD–ONT, 08/16/26 – 08/23/26: From $444
    16

    Su

  • FSD–ONT, 08/17/26 – 08/24/26: From $444
    17

    Mo

  • FSD–ONT, 08/18/26 – 08/25/26: From $417
    18

    Tu

  • FSD–ONT, 08/19/26 – 08/26/26: From $374
    19

    We

  • FSD–ONT, 08/20/26 – 08/27/26: From $374
    20

    Th

  • FSD–ONT, 08/21/26 – 08/28/26: From $374
    21

    Fr

  • FSD–ONT, 08/22/26 – 08/29/26: From $374
    22

    Sa

  • FSD–ONT, 08/23/26 – 08/30/26: From $374
    23

    Su

  • FSD–ONT, 08/24/26 – 08/31/26: From $374
    24

    Mo

  • FSD–ONT, 08/25/26 – 09/01/26: From $374
    25

    Tu

  • FSD–ONT, 08/26/26 – 09/02/26: From $339
    26

    We

  • FSD–ONT, 08/27/26 – 09/03/26: From $409
    27

    Th

  • FSD–ONT, 08/28/26 – 09/04/26: From $339
    28

    Fr

  • FSD–ONT, 08/29/26 – 09/05/26: From $330
    29

    Sa

  • FSD–ONT, 08/30/26 – 09/06/26: From $465
    30

    Su

  • FSD–ONT, 08/31/26 – 09/07/26: From $401
    31

    Mo

  • FSD–ONT, 09/01/26 – 09/08/26: From $406
    01

    Tu

    SEP

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

    We

  • FSD–ONT: cmp-view-offers-disclaimer. Find Offers
    03

    Th

  • FSD–ONT, 09/04/26 – 09/11/26: From $487
    04

    Fr

    • range$330-$674

    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 Sioux Falls to Ontario flights

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    Sioux Falls (FSD)to

    Ontario (ONT)
    10/06/26 - 10/13/26

    Round trip

    Economy

    from
    $321Fare subject to changes
    Updated: 1 hour ago

    Sioux Falls (FSD)to

    Ontario (ONT)
    09/12/26 - 09/19/26

    Round trip

    Economy

    from
    $321Fare subject to changes
    Updated: 1 hour ago

    Sioux Falls (FSD)to

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

    Round trip

    Economy

    from
    $321Fare subject to changes
    Updated: 1 hour ago

    Sioux Falls (FSD)to

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

    Round trip

    Economy

    from
    $321Fare subject to changes
    Updated: 1 hour ago

    Sioux Falls (FSD)to

    Ontario (ONT)
    10/21/26 - 10/28/26

    Round trip

    Economy

    from
    $321Fare subject to changes
    Updated: 1 hour ago

    Sioux Falls (FSD)to

    Ontario (ONT)
    10/27/26 - 11/03/26

    Round trip

    Economy

    from
    $321Fare subject to changes
    Updated: 1 hour ago

    Sioux Falls (FSD)to

    Ontario (ONT)
    10/28/26 - 11/04/26

    Round trip

    Economy

    from
    $321Fare subject to changes
    Updated: 1 hour ago

    Sioux Falls (FSD)to

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

    Round trip

    Economy

    from
    $321Fare subject to changes
    Updated: 1 hour 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 Sioux Falls to Ontario

    Looking for lower fares on your trip from Sioux Falls 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 Sioux Falls to Ontario