Alaska Airlines Flights from Seattle to Idaho Falls

Lowest fares from Seattle to Idaho Falls

Sep 2026
From$209*
Seen: 21 hours ago
Flight Type One Way|Saver
Oct 2026
From$159*
Seen: 21 hours ago
Flight Type One Way|Saver
Nov 2026
From$179*
Seen: 21 hours ago
Flight Type One Way|Saver
cmp-daily-histogram-bars-legend-min-price-aria-label $179
cmp-daily-histogram-bars-legend-max-price-aria-label $524
Displaying fares for September-2026
  • SEA–IDA, Sep 7, 2026: From $499
    07

    Mo

    SEP

  • SEA–IDA, Sep 8, 2026: From $524
    08

    Tu

  • SEA–IDA, Sep 9, 2026: From $389
    09

    We

  • SEA–IDA, Sep 10, 2026: From $399
    10

    Th

  • SEA–IDA, Sep 11, 2026: From $389
    11

    Fr

  • SEA–IDA, Sep 12, 2026: From $324
    12

    Sa

  • SEA–IDA, Sep 13, 2026: From $324
    13

    Su

  • SEA–IDA, Sep 14, 2026: From $324
    14

    Mo

  • SEA–IDA, Sep 15, 2026: From $324
    15

    Tu

  • SEA–IDA, Sep 16, 2026: From $324
    16

    We

  • SEA–IDA, Sep 17, 2026: From $324
    17

    Th

  • SEA–IDA, Sep 18, 2026: From $324
    18

    Fr

  • SEA–IDA, Sep 19, 2026: From $234
    19

    Sa

  • SEA–IDA, Sep 20, 2026: From $389
    20

    Su

  • SEA–IDA, Sep 21, 2026: From $234
    21

    Mo

  • SEA–IDA, Sep 22, 2026: From $234
    22

    Tu

  • SEA–IDA, Sep 23, 2026: From $234
    23

    We

  • SEA–IDA, Sep 24, 2026: From $234
    24

    Th

  • SEA–IDA, Sep 25, 2026: From $269
    25

    Fr

  • SEA–IDA, Sep 26, 2026: From $209
    26

    Sa

  • SEA–IDA, Sep 27, 2026: From $219
    27

    Su

  • SEA–IDA, Sep 28, 2026: From $209
    28

    Mo

  • SEA–IDA, Sep 29, 2026: From $209
    29

    Tu

  • SEA–IDA, Sep 30, 2026: From $209
    30

    We

  • SEA–IDA, Oct 1, 2026: From $244
    01

    Th

    OCT

  • SEA–IDA, Oct 2, 2026: From $209
    02

    Fr

  • SEA–IDA, Oct 3, 2026: From $209
    03

    Sa

  • SEA–IDA, Oct 4, 2026: From $209
    04

    Su

  • SEA–IDA, Oct 5, 2026: From $209
    05

    Mo

  • SEA–IDA, Oct 6, 2026: From $179
    06

    Tu

    • Range$179-$524

    *Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.

    One-way low-fare flights Seattle to Idaho Falls.*

    $
    keyboard_arrow_down
    One-way low-fare flights Seattle to Idaho Falls.*
    From
    To
    Fare Type
    Dates
    Price
    Seattle (SEA)Idaho Falls (IDA)One-way
    |
    Saver    		Depart: Oct 21, 2026

    From

    $159

    Seen: 21 hours ago

    Seattle (SEA)Idaho Falls (IDA)One-way
    |
    Saver    		Depart: Oct 24, 2026

    From

    $159

    Seen: 21 hours ago

    Seattle (SEA)Idaho Falls (IDA)One-way
    |
    Saver    		Depart: Oct 28, 2026

    From

    $159

    Seen: 21 hours ago

    Seattle (SEA)Idaho Falls (IDA)One-way
    |
    Saver    		Depart: Jan 9, 2027

    From

    $159

    Seen: 21 hours ago

    Seattle (SEA)Idaho Falls (IDA)One-way
    |
    Saver    		Depart: Jan 12, 2027

    From

    $159

    Seen: 21 hours ago

    Seattle (SEA)Idaho Falls (IDA)One-way
    |
    Saver    		Depart: Jan 23, 2027

    From

    $159

    Seen: 21 hours ago

    Seattle (SEA)Idaho Falls (IDA)One-way
    |
    Saver    		Depart: Feb 6, 2027

    From

    $159

    Seen: 21 hours ago

    Seattle (SEA)Idaho Falls (IDA)One-way
    |
    Saver    		Depart: Feb 27, 2027

    From

    $159

    Seen: 21 hours ago

    *Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.

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