We have /c/fuckcars but no /c/fuckplanes. Yet a lot of the same arguments apply. They cause air pollution (roughly double the amount per km traveled), noise pollution and they (airports) take up a lot of space near dense living areas. Sure, some places can practically only be visited by plane, just like some places can practically only be visited by car. But people don’t consider not having your holiday that far away or giving pushback on a busines trip that should have been an online meeting. Besides work-from-home being encouraged, work-from-home-country should be too.
Cars need to be discouraged in favor of busses, trams and trains. Planes nees to be discouraged in favor of high-speed trains, staycations and hopefully new alternatives like modern sailboats or electric planes.
Relative to what?
Relative to how busses are more efficient to cars and how in general public modes of transport are much more effective than riding a massive tin can all by yourself.
If you drive an average car on your own, you emit only slightly more (10%) CO2 per km, compared to an average plane with average occupancy. Not that efficient tbh.