American Airlines flights from Chicago to Idaho Falls

Recent searches for flights from Chicago to Idaho Falls

Aug 2026
From$349*
Updated: 2 hours ago
Round tripIEconomy
Sep 2026
From$358*
Updated: 2 hours ago
Round tripIEconomy
Oct 2026
From$281*
Updated: 2 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $349
cmp-daily-histogram-bars-legend-max-price-aria-label $653
Displaying fares for August-2026
  • ORD–IDA: cmp-view-offers-disclaimer. Find Offers
    13

    Th

    AUG

  • ORD–IDA, 08/14/26 – 08/21/26: From $457
    14

    Fr

  • ORD–IDA, 08/15/26 – 08/22/26: From $401
    15

    Sa

  • ORD–IDA, 08/16/26 – 08/23/26: From $653
    16

    Su

  • ORD–IDA, 08/17/26 – 08/24/26: From $538
    17

    Mo

  • ORD–IDA, 08/18/26 – 08/25/26: From $391
    18

    Tu

  • ORD–IDA, 08/19/26 – 08/26/26: From $381
    19

    We

  • ORD–IDA, 08/20/26 – 08/27/26: From $428
    20

    Th

  • ORD–IDA, 08/21/26 – 08/28/26: From $428
    21

    Fr

  • ORD–IDA, 08/22/26 – 08/29/26: From $463
    22

    Sa

  • ORD–IDA, 08/23/26 – 08/30/26: From $549
    23

    Su

  • ORD–IDA, 08/24/26 – 08/31/26: From $418
    24

    Mo

  • ORD–IDA, 08/25/26 – 09/01/26: From $390
    25

    Tu

  • ORD–IDA, 08/26/26 – 09/02/26: From $380
    26

    We

  • ORD–IDA, 08/27/26 – 09/03/26: From $464
    27

    Th

  • ORD–IDA, 08/28/26 – 09/04/26: From $349
    28

    Fr

  • ORD–IDA, 08/29/26 – 09/05/26: From $359
    29

    Sa

  • ORD–IDA, 08/30/26 – 09/06/26: From $499
    30

    Su

  • ORD–IDA, 08/31/26 – 09/07/26: From $650
    31

    Mo

  • ORD–IDA, 09/01/26 – 09/08/26: From $482
    01

    Tu

    SEP

  • ORD–IDA, 09/02/26 – 09/09/26: From $527
    02

    We

  • ORD–IDA, 09/03/26 – 09/10/26: From $646
    03

    Th

  • ORD–IDA, 09/04/26 – 09/11/26: From $591
    04

    Fr

  • ORD–IDA, 09/05/26 – 09/12/26: From $544
    05

    Sa

  • ORD–IDA, 09/06/26 – 09/13/26: From $630
    06

    Su

  • ORD–IDA, 09/07/26 – 09/14/26: From $610
    07

    Mo

  • ORD–IDA, 09/08/26 – 09/15/26: From $644
    08

    Tu

  • ORD–IDA, 09/09/26 – 09/16/26: From $648
    09

    We

  • ORD–IDA: cmp-view-offers-disclaimer. Find Offers
    10

    Th

  • ORD–IDA: cmp-view-offers-disclaimer. Find Offers
    11

    Fr

  • ORD–IDA: cmp-view-offers-disclaimer. Find Offers
    12

    Sa

    • range$349-$653

    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 Chicago to Idaho Falls flights

    $
    keyboard_arrow_down

    Chicago (ORD)to

    Idaho Falls (IDA)
    10/14/26 - 10/20/26

    Round trip

    Economy

    from
    $281Fare subject to changes
    Updated: 19 hours ago

    Chicago (ORD)to

    Idaho Falls (IDA)
    10/17/26 - 10/24/26

    Round trip

    Economy

    from
    $281Fare subject to changes
    Updated: 2 hours ago

    Chicago (ORD)to

    Idaho Falls (IDA)
    10/24/26 - 10/31/26

    Round trip

    Economy

    from
    $281Fare subject to changes
    Updated: 2 hours ago

    Chicago (ORD)to

    Idaho Falls (IDA)
    10/21/26 - 10/28/26

    Round trip

    Economy

    from
    $281Fare subject to changes
    Updated: 2 hours ago

    Chicago (ORD)to

    Idaho Falls (IDA)
    10/28/26 - 11/04/26

    Round trip

    Economy

    from
    $310Fare subject to changes
    Updated: 2 hours ago

    Chicago (ORD)to

    Idaho Falls (IDA)
    10/31/26 - 11/07/26

    Round trip

    Economy

    from
    $310Fare subject to changes
    Updated: 2 hours ago

    Chicago (ORD)to

    Idaho Falls (IDA)
    10/20/26 - 10/27/26

    Round trip

    Economy

    from
    $310Fare subject to changes
    Updated: 2 hours ago

    Chicago (ORD)to

    Idaho Falls (IDA)
    10/09/26 - 10/16/26

    Round trip

    Economy

    from
    $319Fare 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 Chicago to Idaho Falls

    Looking for lower fares on your trip from Chicago to Idaho Falls? 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 Chicago to Idaho Falls