[throwaway894345]

Air travel will get more carbon efficient. The whole idea behind a carbon tax is that we start low and hike gradually, giving the market time to respond (rather than flipping a switch and raising ticket prices 7% overnight). Of course, the longer we wait the faster we have to hike prices (the timeline compresses), so it's hard to feel bad for industries that have resisted carbon taxes for the last decades. Moreover, if climate science is correct, the consequences of doing nothing far outweigh the loss of cheap air travel (of course, that's just a worst-case scenario; we absolutely don't have to choose between those two outcomes).