Document and Entity Information - USD ($)	12 Months Ended
	Oct. 31, 2020	Dec. 31, 2020	Apr. 30, 2020
Text Block [Abstract]
Registrant CIK	0000225628
Fiscal Year End	--10-31
Registrant Name	PASSUR AEROSPACE, INC.
SEC Form	10-K
Period End date	Oct. 31, 2020
Tax Identification Number (TIN)	11-2208938
Number of common stock shares outstanding		7,712,091
Public Float			$ 2,086,021
Filer Category	Non-accelerated Filer
Current with reporting	Yes
Interactive Data Current	Yes
Voluntary filer	No
Well-known Seasoned Issuer	No
Shell Company	false
Small Business	true
Emerging Growth Company	false
Document Annual Report	true
Document Transition Report	false
Entity File Number	0-7642
Entity Incorporation, State or Country Code	NY
Entity Address, Address Line One	One Landmark Square
Entity Address, Address Line Two	Suite 1905
Entity Address, City or Town	Stamford
Entity Address, State or Province	CT
Entity Address, Postal Zip Code	06901
City Area Code	203
Local Phone Number	622-4086
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY