6 links have been added on this idea.
  1. While carbon offsetting initiatives are eco-friendly, they take a long time to kick in, by which time the damage to the environment has already been done.

  2. This organization sells carbon offsets, where you pay money for each flight you take, which is then invested in eco-friendly initiatives.
    https://www.cooleffect.org/travel-offset

  3. You can pay this company to plant trees for each flight you take!

  4. Planting trees is one of the popular ways of offestting the carbon footprint of air travel.