v3.25.2
Cover
6 Months Ended
Jun. 30, 2025
shares
Cover [Abstract]  
Document Type 10-Q
Document Quarterly Report true
Document Period End Date Jun. 30, 2025
Document Transition Report false
Entity File Number 001-40217
Entity Registrant Name Sun Country Airlines Holdings, Inc.
Entity Incorporation, State or Country Code DE
Entity Tax Identification Number 82-4092570
Entity Address, Address Line One 2005 Cargo Road
Entity Address, City or Town Minneapolis
Entity Address, State or Province MN
Entity Address, Postal Zip Code 55450
City Area Code 651
Local Phone Number 681-3900
Title of 12(b) Security Common Stock, par value $0.01 per share
Trading Symbol SNCY
Security Exchange Name NASDAQ
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Accelerated Filer
Entity Small Business false
Entity Emerging Growth Company false
Entity Shell Company false
Entity Common Stock, Shares Outstanding 53,316,378
Entity Central Index Key 0001743907
Current Fiscal Year End Date --12-31
Document Fiscal Year Focus 2025
Document Fiscal Period Focus Q2
Amendment Flag false