I like fresh ideas to reduce flights. This seems onerous to implement.<p>You need a central EU database on who is flying where and in which class.<p>In their paper they mention that the carrier needs your tax status to calculate the full fare. This will enable all kinds of shenanigans for quoting you a different price because they can estimate how price-sensitive you are.<p>It would be fun for HR departments. By the time I make my first non-business flight, half a year is already over and this a couple flights for the job. Who pays the tax for that?<p><a href="https://stay-grounded.org/wp-content/uploads/2022/04/Frequent-flying-levy-Europe.pdf" rel="nofollow">https://stay-grounded.org/wp-content/uploads/2022/04/Frequen...</a>