jet off verb2 •To go by airplane to a destination.By then the summer surge was already dwindling, as travellers switched to the roads or jetted off to beach resorts abroad. — 2025 •To depart hurriedly.“Clown Without Pity,” as the segment is called, opens with Homer forgetting Bart’s birthday and jetting off at the last minute (or rather considerably after the last minute) to pick him up a present. — 2012 formsjetted off · jetting off · jets off