Flights from Seattle (SEA) to Sun Valley (SUN) on Alaska Airlines

Lowest fares from Seattle to Sun Valley

Nov 2026
From$314*
Seen: 4 hours ago
Flight Type One Way|Saver
Dec 2026
From$159*
Seen: 4 hours ago
Flight Type One Way|Saver
Jan 2027
From$159*
Seen: 4 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 $564
Displaying fares for November-2026
  • SEA–SUN, Nov 13, 2026: From $564
    13

    Fr

    NOV

  • SEA–SUN, Nov 14, 2026: From $564
    14

    Sa

  • SEA–SUN, Nov 15, 2026: From $564
    15

    Su

  • SEA–SUN, Nov 16, 2026: From $564
    16

    Mo

  • SEA–SUN, Nov 17, 2026: From $564
    17

    Tu

  • SEA–SUN, Nov 18, 2026: From $564
    18

    We

  • SEA–SUN, Nov 19, 2026: From $459
    19

    Th

  • SEA–SUN, Nov 20, 2026: From $459
    20

    Fr

  • SEA–SUN, Nov 21, 2026: From $459
    21

    Sa

  • SEA–SUN, Nov 22, 2026: From $459
    22

    Su

  • SEA–SUN, Nov 23, 2026: From $459
    23

    Mo

  • SEA–SUN, Nov 24, 2026: From $459
    24

    Tu

  • SEA–SUN, Nov 25, 2026: From $459
    25

    We

  • SEA–SUN: cmp-view-offers-disclaimer. Find Offers
    26

    Th

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

    Fr

  • SEA–SUN, Nov 28, 2026: From $459
    28

    Sa

  • SEA–SUN, Nov 29, 2026: From $564
    29

    Su

  • SEA–SUN, Nov 30, 2026: From $314
    30

    Mo

  • SEA–SUN, Dec 1, 2026: From $314
    01

    Tu

    DEC

  • SEA–SUN, Dec 2, 2026: From $314
    02

    We

  • SEA–SUN, Dec 3, 2026: From $264
    03

    Th

  • SEA–SUN, Dec 4, 2026: From $264
    04

    Fr

  • SEA–SUN, Dec 5, 2026: From $264
    05

    Sa

  • SEA–SUN, Dec 6, 2026: From $264
    06

    Su

  • SEA–SUN, Dec 7, 2026: From $264
    07

    Mo

  • SEA–SUN, Dec 8, 2026: From $264
    08

    Tu

  • SEA–SUN, Dec 9, 2026: From $264
    09

    We

  • SEA–SUN, Dec 10, 2026: From $264
    10

    Th

  • SEA–SUN, Dec 11, 2026: From $264
    11

    Fr

  • SEA–SUN, Dec 12, 2026: From $159
    12

    Sa

    • Range$159-$564

    *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: Dec 22, 2026

    From

    $159

    Seen: 4 hours ago

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

    From

    $159

    Seen: 4 hours ago

    Seattle (SEA)Sun Valley (SUN)One-way
    |
    Saver    		Depart: Dec 29, 2026

    From

    $159

    Seen: 4 hours ago

    Seattle (SEA)Sun Valley (SUN)One-way
    |
    Saver    		Depart: Jan 5, 2027

    From

    $159

    Seen: 4 hours ago

    Seattle (SEA)Sun Valley (SUN)One-way
    |
    Saver    		Depart: Feb 2, 2027

    From

    $159

    Seen: 4 hours ago

    Seattle (SEA)Sun Valley (SUN)One-way
    |
    Saver    		Depart: Mar 10, 2027

    From

    $159

    Seen: 4 hours ago

    Seattle (SEA)Sun Valley (SUN)One-way
    |
    Saver    		Depart: Dec 16, 2026

    From

    $159

    Seen: 4 hours ago

    Seattle (SEA)Sun Valley (SUN)One-way
    |
    Saver    		Depart: Jan 12, 2027

    From

    $159

    Seen: 4 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.

    Frequently Asked Questions on flights from Seattle (SEA) to Sun Valley (SUN)

    When is the best time to book a flight from Seattle to Sun Valley?

    Want to find the lowest fares by day and time flying from Seattle to Sun Valley on Alaska Airlines or Hawaiian Airlines? Check out our flight search widget.

    Can I earn points on my flight to Sun Valley?

    Yes, with Atmosâ„¢ Rewards you can earn points on flights to 1000+ destinations worldwide through the growing network of Alaska and Hawaiian Airlines. Not an Atmosâ„¢ Rewards member yet? Learn more and join today.

    Can I rent a car when I arrive at Friedman Memorial Airport?

    Yes, you can rent a car at Friedman Memorial Airport. Check availability and book now

    Where can I find the status of my flight to Sun Valley?

    You can check the status of your upcoming Alaska Airlines flight on our flight schedule page.

    Where can I find answers to questions about flying with Alaska Airlines?

    Visit the Alaska Airlines Help Center to quickly browse our help pages by category to find the information you need.

    Can I change or cancel my Alaska Airlines flight to Sun Valley?

    Yes, you can review, modify, or cancel a reservation from our Manage Your Reservation tool. You can learn more about our policy for changing or cancelling a reservation here. 

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