v3.26.1
Document and Entity Information
12 Months Ended
Dec. 31, 2025
Entity Information [Line Items]  
Document Type 11-K
Document Period End Date Dec. 31, 2025
Entity Registrant Name SKYWEST, INC.
Entity Central Index Key 0000793733
Amendment Flag false
SKYWEST, INC. EMPLOYEES' RETIREMENT PLAN  
Entity Information [Line Items]  
Document Period End Date Dec. 31, 2025
Entity Tax Identification Number 87-0292166
Amendment Flag false