It is a problem for all forms of overseas travel as well, we have a motorhome and it is noticeable how many others chatting on related forums say they will be staying in the UK this year and not travelling in France and the rest of Europe. On the plus side there was a picture taken by NASA in the last 48 hours which shows a significant drop in pollution levels over China!
Sadly the airline industry is not the place to be if you want long term job security, been there and got that T shirt.