Best time to ski Sun Valley
From Ketchum / Boise via ID 75. Status: Opening day Nov 26 (announced by the resort).
Quietest: Tuesdays and Wednesdays, especially in March. Busiest: Saturdays, plus Thanksgiving weekend, Christmas to New Year's, New Year's weekend, MLK weekend.
This week at Sun Valley
Crowds by day of the week
Typical non-holiday weeks this season, from the SkiWhen crowd model.
Holidays and school breaks to know
| Period | Dates | Expect |
|---|---|---|
| Thanksgiving weekend | Nov 26–29 | Packed |
| Winter break (ID) | Dec 21–25 | Busy |
| Christmas to New Year's | Dec 26–Jan 1 | Packed |
| New Year's weekend | Jan 2–3 | Packed |
| MLK weekend | Jan 16–18 | Packed |
| Presidents' Day weekend | Feb 13–15 | Packed |
| Spring break (est.) (ID) | Mar 22–26 | Busy |
School break dates marked (est.) are estimates.
Month by month
| Month | Quiet days | Packed days |
|---|---|---|
| December 2026 | 18 | 2 |
| January 2027 | 19 | 5 |
| February 2027 | 19 | 2 |
| March 2027 | 22 | 0 |
| April 2027 | 12 | 0 |
Calmer mountains nearby
Brundage Mountain, Schweitzer usually draw smaller crowds than Sun Valley on the same day.
Questions skiers ask
When is Sun Valley least busy?
Tuesdays and Wednesdays outside holidays and school breaks, especially in March.
Is Sun Valley busy on weekends?
Yes. Saturday is usually the busiest day of the week at Sun Valley. Arrive before the lifts open or go on a weekday.
When is Sun Valley busiest?
Saturdays, plus thanksgiving weekend, christmas to new year's, new year's weekend, mlk weekend.
Will Sun Valley be busy this weekend?
Check the live 7-day crowd forecast for Sun Valley on SkiWhen. It updates every morning with snow and weather.