As adjectives the difference between flighty and ditzy
is that flighty is given to unplanned and silly ideas or actions while ditzy is silly or scatterbrained, usually of a woman.
flighty
English
Adjective
(er)
Given to unplanned and silly ideas or actions.
ditzy
English
Alternative forms
* ditsy
Adjective
(er)
(informal) Silly or scatterbrained, usually of a woman.