Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2023	Nov. 14, 2023
Document Information Line Items
Entity Registrant Name	PONO CAPITAL THREE, INC.
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Amendment Flag	false
Entity Central Index Key	0001930021
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Document Period End Date	Sep. 30, 2023
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Shell Company	true
Entity Ex Transition Period	false
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	001-41607
Entity Incorporation, State or Country Code	E9
Entity Tax Identification Number	00-0000000
Entity Address, Address Line One	643 Ilalo St.., #102
Entity Address, City or Town	Honolulu
Entity Address, State or Province	HI
Entity Address, Postal Zip Code	96813
City Area Code	(808)
Local Phone Number	892-6611
Entity Interactive Data Current	Yes
Units, each consisting of one Class A Ordinary Share and one Redeemable Warrant
Document Information Line Items
Trading Symbol	PTHRU
Title of 12(b) Security	Units, each consisting of one Class A Ordinary Share and one Redeemable Warrant
Security Exchange Name	NASDAQ
Class A Ordinary Share, $0.0001 par value per share
Document Information Line Items
Trading Symbol	PTHR
Title of 12(b) Security	Class A Ordinary Share, $0.0001 par value per share
Security Exchange Name	NASDAQ
Redeemable Warrants, each warrant exercisable for one Class A Ordinary Share at an exercise price of $11.50 per share
Document Information Line Items
Trading Symbol	PTHRW
Title of 12(b) Security	Redeemable Warrants, each warrant exercisable for one Class A Ordinary Share at an exercise price of $11.50 per share
Security Exchange Name	NASDAQ
Class A Ordinary Shares
Document Information Line Items
Entity Common Stock, Shares Outstanding		12,168,875
Class B Ordinary Shares
Document Information Line Items
Entity Common Stock, Shares Outstanding		4,935,622