Alaska Airlines Flights from Idaho Falls to Seattle

Lowest fares from Idaho Falls to Seattle

Sep 2026
From$229*
Seen: 2 hours ago
Flight Type One Way|Saver
Oct 2026
From$179*
Seen: 2 hours ago
Flight Type One Way|Saver
Nov 2026
From$159*
Seen: 2 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 $594
Displaying fares for September-2026
  • IDA–SEA, Sep 8, 2026: From $359
    08

    Tu

    SEP

  • IDA–SEA, Sep 9, 2026: From $359
    09

    We

  • IDA–SEA, Sep 10, 2026: From $489
    10

    Th

  • IDA–SEA, Sep 11, 2026: From $359
    11

    Fr

  • IDA–SEA, Sep 12, 2026: From $369
    12

    Sa

  • IDA–SEA, Sep 13, 2026: From $594
    13

    Su

  • IDA–SEA, Sep 14, 2026: From $344
    14

    Mo

  • IDA–SEA, Sep 15, 2026: From $344
    15

    Tu

  • IDA–SEA, Sep 16, 2026: From $344
    16

    We

  • IDA–SEA, Sep 17, 2026: From $344
    17

    Th

  • IDA–SEA, Sep 18, 2026: From $344
    18

    Fr

  • IDA–SEA, Sep 19, 2026: From $344
    19

    Sa

  • IDA–SEA, Sep 20, 2026: From $344
    20

    Su

  • IDA–SEA, Sep 21, 2026: From $254
    21

    Mo

  • IDA–SEA, Sep 22, 2026: From $254
    22

    Tu

  • IDA–SEA, Sep 23, 2026: From $254
    23

    We

  • IDA–SEA, Sep 24, 2026: From $254
    24

    Th

  • IDA–SEA, Sep 25, 2026: From $254
    25

    Fr

  • IDA–SEA, Sep 26, 2026: From $254
    26

    Sa

  • IDA–SEA, Sep 27, 2026: From $254
    27

    Su

  • IDA–SEA, Sep 28, 2026: From $229
    28

    Mo

  • IDA–SEA, Sep 29, 2026: From $229
    29

    Tu

  • IDA–SEA, Sep 30, 2026: From $229
    30

    We

  • IDA–SEA, Oct 1, 2026: From $229
    01

    Th

    OCT

  • IDA–SEA, Oct 2, 2026: From $229
    02

    Fr

  • IDA–SEA, Oct 3, 2026: From $229
    03

    Sa

  • IDA–SEA, Oct 4, 2026: From $229
    04

    Su

  • IDA–SEA, Oct 5, 2026: From $229
    05

    Mo

  • IDA–SEA, Oct 6, 2026: From $229
    06

    Tu

  • IDA–SEA, Oct 7, 2026: From $179
    07

    We

    • Range$179-$594

    *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 Idaho Falls to Seattle.*

    $
    keyboard_arrow_down
    One-way low-fare flights Idaho Falls to Seattle.*
    From
    To
    Fare Type
    Dates
    Price
    Idaho Falls (IDA)Seattle (SEA)One-way
    |
    Saver    		Depart: Nov 14, 2026

    From

    $159

    Seen: 2 hours ago

    Idaho Falls (IDA)Seattle (SEA)One-way
    |
    Saver    		Depart: Nov 7, 2026

    From

    $159

    Seen: 2 hours ago

    Idaho Falls (IDA)Seattle (SEA)One-way
    |
    Saver    		Depart: Nov 10, 2026

    From

    $159

    Seen: 2 hours ago

    Idaho Falls (IDA)Seattle (SEA)One-way
    |
    Saver    		Depart: Nov 18, 2026

    From

    $159

    Seen: 2 hours ago

    Idaho Falls (IDA)Seattle (SEA)One-way
    |
    Saver    		Depart: Nov 3, 2026

    From

    $159

    Seen: 2 hours ago

    Idaho Falls (IDA)Seattle (SEA)One-way
    |
    Saver    		Depart: Nov 4, 2026

    From

    $159

    Seen: 2 hours ago

    Idaho Falls (IDA)Seattle (SEA)One-way
    |
    Saver    		Depart: Nov 17, 2026

    From

    $159

    Seen: 2 hours ago

    Idaho Falls (IDA)Seattle (SEA)One-way
    |
    Saver    		Depart: Jan 13, 2027

    From

    $179

    Seen: 2 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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