Alaska Airlines Flights from Seattle to Sun Valley

Lowest fares from Seattle to Sun Valley

Aug 2026
From$234*
Seen: 8 hours ago
Flight Type One Way|Saver
Sep 2026
From$139*
Seen: 8 hours ago
Flight Type One Way|Saver
Oct 2026
From$139*
Seen: 8 hours ago
Flight Type One Way|Saver
cmp-daily-histogram-bars-legend-min-price-aria-label $159
cmp-daily-histogram-bars-legend-max-price-aria-label $614
Displaying fares for August-2026
  • SEA–SUN, Aug 8, 2026: From $514
    08

    Sa

    AUG

  • SEA–SUN, Aug 9, 2026: From $514
    09

    Su

  • SEA–SUN, Aug 10, 2026: From $514
    10

    Mo

  • SEA–SUN, Aug 11, 2026: From $514
    11

    Tu

  • SEA–SUN, Aug 12, 2026: From $514
    12

    We

  • SEA–SUN, Aug 13, 2026: From $614
    13

    Th

  • SEA–SUN, Aug 14, 2026: From $354
    14

    Fr

  • SEA–SUN, Aug 15, 2026: From $354
    15

    Sa

  • SEA–SUN, Aug 16, 2026: From $354
    16

    Su

  • SEA–SUN, Aug 17, 2026: From $354
    17

    Mo

  • SEA–SUN, Aug 18, 2026: From $354
    18

    Tu

  • SEA–SUN, Aug 19, 2026: From $354
    19

    We

  • SEA–SUN, Aug 20, 2026: From $354
    20

    Th

  • SEA–SUN, Aug 21, 2026: From $314
    21

    Fr

  • SEA–SUN, Aug 22, 2026: From $314
    22

    Sa

  • SEA–SUN, Aug 23, 2026: From $314
    23

    Su

  • SEA–SUN, Aug 24, 2026: From $314
    24

    Mo

  • SEA–SUN, Aug 25, 2026: From $314
    25

    Tu

  • SEA–SUN, Aug 26, 2026: From $314
    26

    We

  • SEA–SUN, Aug 27, 2026: From $314
    27

    Th

  • SEA–SUN, Aug 28, 2026: From $314
    28

    Fr

  • SEA–SUN, Aug 29, 2026: From $234
    29

    Sa

  • SEA–SUN, Aug 30, 2026: From $234
    30

    Su

  • SEA–SUN, Aug 31, 2026: From $234
    31

    Mo

  • SEA–SUN, Sep 1, 2026: From $234
    01

    Tu

    SEP

  • SEA–SUN, Sep 2, 2026: From $234
    02

    We

  • SEA–SUN, Sep 3, 2026: From $234
    03

    Th

  • SEA–SUN, Sep 4, 2026: From $234
    04

    Fr

  • SEA–SUN, Sep 5, 2026: From $234
    05

    Sa

  • SEA–SUN, Sep 6, 2026: From $159
    06

    Su

  • SEA–SUN, Sep 7, 2026: From $234
    07

    Mo

    • Range$159-$614

    *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 Sun Valley.*

    $
    keyboard_arrow_down
    One-way low-fare flights Seattle to Sun Valley.*
    From
    To
    Fare Type
    Dates
    Price
    Seattle (SEA)Sun Valley (SUN)One-way
    |
    Saver    		Depart: Nov 18, 2026

    From

    $139

    Seen: 8 hours ago

    Seattle (SEA)Sun Valley (SUN)One-way
    |
    Saver    		Depart: Dec 8, 2026

    From

    $139

    Seen: 8 hours ago

    Seattle (SEA)Sun Valley (SUN)One-way
    |
    Saver    		Depart: Dec 15, 2026

    From

    $139

    Seen: 8 hours ago

    Seattle (SEA)Sun Valley (SUN)One-way
    |
    Saver    		Depart: Nov 10, 2026

    From

    $139

    Seen: 8 hours ago

    Seattle (SEA)Sun Valley (SUN)One-way
    |
    Saver    		Depart: Nov 11, 2026

    From

    $139

    Seen: 8 hours ago

    Seattle (SEA)Sun Valley (SUN)One-way
    |
    Saver    		Depart: Nov 14, 2026

    From

    $139

    Seen: 8 hours ago

    Seattle (SEA)Sun Valley (SUN)One-way
    |
    Saver    		Depart: Sep 15, 2026

    From

    $139

    Seen: 8 hours ago

    Seattle (SEA)Sun Valley (SUN)One-way
    |
    Saver    		Depart: Sep 23, 2026

    From

    $139

    Seen: 8 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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