1
general::
Phrase(s): (I’ve) got to take off.
Fig. a phrase announcing one’s need to depart. (See also (I) have to shove off for other possible variations.) • Mary: Got to take off. Bye. Bob: Leaving so soon? Mary: Yes. Time to go. Bob: Bye. • "Look at the time. I’ve got to take off!" shrieked Alice.
McGrawhill's American Idioms And Phrasal Verbs