1) Airman 2) Aviator 3) Ballon pilot 4) Balloon man 5) Balloon operator 6) Balloon rider 7) Balloonist 8) Blimp navigator 9) Blimp pilot 10) Dirigible pilot 11) Flier 12) Flyer 13) Her career is up in the air 14) One in a balloon 15) Pilot of aerostat 16) Skilled worker 17) Trained worker 18) Zeppelin pilot Found on https://www.crosswordclues.com/clue/aeronaut
A'ër·o·naut noun [ French aéronaute , from Greek ... air + ... sailor. See Nautical .] An aërial navigator; a balloonist. Found on http://www.encyclo.co.uk/webster/A/37
aeronaut 1. The pilot of a balloon or other lighter-than-air aircraft. 2. A traveler in an airship. 3. A pilot or navigator of a lighter-than-air craft; such as, a balloon. 4. Literally, an 'air sailor'. Found on http://www.wordinfo.info/words/index/info/view_unit/1373/