American Airlines flights from Washington, D.C. to Idaho Falls

Recent searches for flights from Washington, D.C. to Idaho Falls

Sep 2026
From$454*
Updated: 1 hour ago
Round tripIEconomy
Oct 2026
From$350*
Updated: 1 hour ago
Round tripIEconomy
Nov 2026
From$350*
Updated: 1 hour ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $454
cmp-daily-histogram-bars-legend-max-price-aria-label $968
Displaying fares for September-2026
  • WAS–IDA: cmp-view-offers-disclaimer. Find Offers
    02

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    SEP

  • WAS–IDA, 09/03/26 – 09/10/26: From $634
    03

    Th

  • WAS–IDA, 09/04/26 – 09/11/26: From $875
    04

    Fr

  • DCA–IDA, 09/05/26 – 09/12/26: From $592
    05

    Sa

  • WAS–IDA, 09/06/26 – 09/13/26: From $968
    06

    Su

  • DCA–IDA, 09/07/26 – 09/14/26: From $663
    07

    Mo

  • DCA–IDA, 09/08/26 – 09/15/26: From $778
    08

    Tu

  • WAS–IDA, 09/09/26 – 09/16/26: From $562
    09

    We

  • WAS–IDA, 09/10/26 – 09/17/26: From $548
    10

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  • WAS–IDA, 09/11/26 – 09/18/26: From $568
    11

    Fr

  • WAS–IDA, 09/12/26 – 09/19/26: From $720
    12

    Sa

  • WAS–IDA, 09/13/26 – 09/20/26: From $875
    13

    Su

  • WAS–IDA, 09/14/26 – 09/21/26: From $596
    14

    Mo

  • WAS–IDA, 09/15/26 – 09/22/26: From $548
    15

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  • WAS–IDA, 09/16/26 – 09/23/26: From $548
    16

    We

  • DCA–IDA, 09/17/26 – 09/24/26: From $822
    17

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  • DCA–IDA, 09/18/26 – 09/25/26: From $840
    18

    Fr

  • WAS–IDA, 09/19/26 – 09/26/26: From $690
    19

    Sa

  • WAS–IDA, 09/20/26 – 09/27/26: From $829
    20

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  • DCA–IDA, 09/21/26 – 09/28/26: From $634
    21

    Mo

  • WAS–IDA, 09/22/26 – 09/29/26: From $480
    22

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  • WAS–IDA, 09/23/26 – 09/30/26: From $454
    23

    We

  • DCA–IDA, 09/24/26 – 10/01/26: From $555
    24

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  • WAS–IDA, 09/25/26 – 10/02/26: From $531
    25

    Fr

  • DCA–IDA, 09/26/26 – 10/03/26: From $515
    26

    Sa

  • WAS–IDA, 09/27/26 – 10/04/26: From $742
    27

    Su

  • WAS–IDA, 09/28/26 – 10/05/26: From $554
    28

    Mo

  • WAS–IDA, 09/29/26 – 10/06/26: From $470
    29

    Tu

  • WAS–IDA: cmp-view-offers-disclaimer. Find Offers
    30

    We

  • WAS–IDA: cmp-view-offers-disclaimer. Find Offers
    01

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    OCT

    • range$454-$968

    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 Washington, D.C. to Idaho Falls flights

    $
    keyboard_arrow_down

    Washington, D.C. (WAS)to

    Idaho Falls (IDA)
    10/23/26 - 10/30/26

    Round trip

    Economy

    from
    $350Fare subject to changes
    Updated: 1 hour ago

    Washington, D.C. (WAS)to

    Idaho Falls (IDA)
    10/16/26 - 10/23/26

    Round trip

    Economy

    from
    $350Fare subject to changes
    Updated: 1 hour ago

    Washington, D.C. (WAS)to

    Idaho Falls (IDA)
    10/22/26 - 10/29/26

    Round trip

    Economy

    from
    $350Fare subject to changes
    Updated: 1 hour ago

    Washington, D.C. (WAS)to

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

    Round trip

    Economy

    from
    $350Fare subject to changes
    Updated: 1 hour ago

    Washington, D.C. (WAS)to

    Idaho Falls (IDA)
    11/03/26 - 11/10/26

    Round trip

    Economy

    from
    $350Fare subject to changes
    Updated: 1 hour ago

    Washington, D.C. (WAS)to

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

    Round trip

    Economy

    from
    $350Fare subject to changes
    Updated: 1 hour ago

    Washington, D.C. (WAS)to

    Idaho Falls (IDA)
    10/27/26 - 11/03/26

    Round trip

    Economy

    from
    $350Fare subject to changes
    Updated: 1 hour ago

    Washington, D.C. (WAS)to

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

    Round trip

    Economy

    from
    $350Fare 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 Washington, D.C. to Idaho Falls

    Looking for lower fares on your trip from Washington, D.C. 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 Washington, D.C. to Idaho Falls