Sun Country Airlines (SNCY) 10-K/A 22 Feb 22 2021 FY Annual report (amended) Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Jun. 30, 2021
Document and Entity Information [Abstract]
Document Type	10-K/A
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2021
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 Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Amendment Flag	false
Entity Central Index Key	0001743907
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
ICFR Auditor Attestation Flag	false
Entity Shell Company	false
Entity Public Float		$ 861
Entity Common Stock, Shares Outstanding	57,872,452
Auditor Name	KPMG LLP
Auditor Firm ID	185
Auditor Location	Minneapolis, Minnesota
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY