How high can bugs that have wings fly up to without gravity pulling them down?

Question: How high can bugs that have wings fly up to without gravity pulling them down?
- Keywords:
  biology,
  fly,
  gravity,
  insect,
  wing
Asked by anon-226532 to Freya on 21 Nov 2019.
- Freya Addison answered on 21 Nov 2019:
  
  It is not just winged insects we can find at high altitudes. Insects are really small so winds can lift them further and further up in the atmosphere. The highest might be from 3.5-5km. I think the record is a termite at 5.7km!

Question: How high can bugs that have wings fly up to without gravity pulling them down?