Cover Page - shares	6 Months Ended
	Jun. 30, 2020	Aug. 01, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2020
Document Transition Report	false
Entity File Number	001-32959
Entity Registrant Name	AIRCASTLE LIMITED
Entity Incorporation, State or Country Code	D0
Entity Tax Identification Number	98-0444035
Entity Address, Address Line One	c/o Aircastle Advisor LLC
Entity Address, Address Line Two	201 Tresser Boulevard, Suite 400
Entity Address, City or Town	Stamford
Entity Address, State or Province	CT
City Area Code	203
Local Phone Number	504-1020
Title of 12(b) Security	Common Shares, par value $0.01 per share
Trading Symbol	N/A
Security Exchange Name	NONE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		14,048
Entity Central Index Key	0001362988
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--12-31
Entity Address, Postal Zip Code	06901