Air fight is very damaging to the environment, that is not in dispute. Air flight also provides a lot of people with the chance to relax, do business, see family, experience other cultures etc.
I think we are all taxed far too much but I do also believe that tax can be a good way to influence behaviour, increasing taxes on behaviour that you want to reduce matched by decreasing taxes on behaviour you want to encourage. If this plan works and “damaging” behaviour reduces then so does the tax take. This is a good way to reduce the overall tax burden, increase green behaviour and cut the tax burden. Green and Conservative.
Convincing the British people of this, however, will not be easy. I am confident that these plans will form part of a changing of taxes rather than an increase in overall taxation rates but it will be a minefield none the less.