nonscheduled

[non-skej-oold, -oo ld, -oo-uh ld; British non-shed-yoold, -shej-oold] /nɒnˈskɛdʒ uld, -ʊld, -u əld; British nɒnˈʃɛd yuld, -ˈʃɛdʒ uld/
adjective
1.
not scheduled; not entered on or having a schedule; unscheduled:
nonscheduled activities.
2.
(of an airline) authorized to carry passengers or freight between specified points as demand warrants, rather than on a regular schedule.
Origin
1945-50, Americanism; non- + scheduled
Examples from the web for nonscheduled
  • The subsector distinguishes scheduled from nonscheduled air transportation.
  • Activities that do not occur routinely are not covered by the provisions governing individual, nonscheduled operations.
British Dictionary definitions for nonscheduled

nonscheduled

/nɒnˈʃɛdjuːld; esp US nɒnˈskɛdʒʊəld/
adjective
1.
not according to a schedule or plan; unscheduled
2.
(of an airline) operating without published flight schedules