Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2025	Nov. 14, 2025
Document Information [Line Items]
Entity Central Index Key	0000946486
Entity Registrant Name	WINDTREE THERAPEUTICS INC /DE/
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2025
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2025
Document Transition Report	false
Entity File Number	001-39290
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	94-3171943
Entity Address, Address Line One	2600 Kelly Road, Suite 100
Entity Address, City or Town	Warrington
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	18976-3622
City Area Code	215
Local Phone Number	488-9300
Title of 12(b) Security	Common Stock, $0.001 par value
Trading Symbol	WINT
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		33,708,784