Alaska Airlines Flights from Idaho Falls to Seattle

Lowest fares from Idaho Falls to Seattle

May 2026
From$139*
Seen: 6 minutes ago
Flight Type One Way|Saver
Jun 2026
From$119*
Seen: 6 minutes ago
Flight Type One Way|Saver
Jul 2026
From$179*
Seen: 6 minutes ago
Flight Type One Way|Saver
$119
$579
Displaying fares for May-2026
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    • Range$119-$579

    *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.*

    $
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    One-way low-fare flights Idaho Falls to Seattle.*
    From
    To
    Fare Type
    Dates
    Price
    Idaho Falls (IDA)Seattle (SEA)One-way
    |
    Saver    		Depart: Jun 3, 2026

    From

    $119

    Seen: 2 minutes ago

    Idaho Falls (IDA)Seattle (SEA)One-way
    |
    Saver    		Depart: Jun 6, 2026

    From

    $139

    Seen: 2 minutes ago

    Idaho Falls (IDA)Seattle (SEA)One-way
    |
    Saver    		Depart: May 27, 2026

    From

    $139

    Seen: 2 minutes ago

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

    From

    $149

    Seen: 2 minutes ago

    Idaho Falls (IDA)Seattle (SEA)One-way
    |
    Saver    		Depart: Jun 8, 2026

    From

    $149

    Seen: 2 minutes ago

    Idaho Falls (IDA)Seattle (SEA)One-way
    |
    Saver    		Depart: Aug 12, 2026

    From

    $179

    Seen: 2 minutes ago

    Idaho Falls (IDA)Seattle (SEA)One-way
    |
    Saver    		Depart: Aug 13, 2026

    From

    $179

    Seen: 2 minutes ago

    Idaho Falls (IDA)Seattle (SEA)One-way
    |
    Saver    		Depart: Aug 19, 2026

    From

    $179

    Seen: 2 minutes 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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