1) Aviated 2) Disappeared 3) Gone 4) Gone by air 5) Gone by plane 6) Gotten off the ground 7) Left the coop 8) Moved like a bird 9) Moved through the air 10) Sent by plane 11) Taken off 12) Taken wing 13) Traveled by plane 14) Travelled by air Found on https://www.crosswordclues.com/clue/flown
Flown adjective Flushed, inflated. [ Supposed by some to be a mistake for blown or swoln .] Pope. « Then wander forth the sons Of Belial, flown with insolence and wine.» Milton. Found on http://www.encyclo.co.uk/webster/F/48