A levy would keep flights cheap for occasional flyers while making multiple flights in a year much more expensive.
[...]
For the first and second flights taken in a year, a €50 surcharge would be applied to medium-haul and €100 to long-haul, business and first-class flights.
For the third and fourth flights, a €50 levy would be added to every ticket plus an additional €50 surcharge for medium-haul and €100 for longer distances and comfort classes.
For fifth and sixth flights, the levy would rise to €100 per flight, plus the additional surcharges. For seventh and eighth flights the levy would be €200, rising to €400 for every flight thereafter.
Would you reduce your flying habits if it becomes more expensive? As it is targeted at the rich, I'm not sure a 50—to 400 Euro increase will actually have the proclaimed impact other than making more money for the state.