Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2024	Nov. 01, 2024
Document and Entity Information
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2024
Document Transition Report	false
Securities Act File Number	001-41090
Entity Registrant Name	Southland Holdings, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	87-1783910
Entity Address, Address Line One	1100 Kubota Dr.
Entity Address, City or Town	Grapevine
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	76051
City Area Code	817
Local Phone Number	293-4263
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		48,105,512
Entity Central Index Key	0001883814
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q3
Amendment Flag	false
Common Stock
Document and Entity Information
Title of 12(b) Security	Common Stock, par value $0.0001 per share
Trading Symbol	SLND
Security Exchange Name	NYSEAMER
Redeemable warrants
Document and Entity Information
Title of 12(b) Security	Redeemable warrants, exercisable for shares of common stock at an exercise price of $11.50 per share
Trading Symbol	SLND WS
Security Exchange Name	NYSEAMER