Panic is not a good advisor.
Read this extract from a Ryanair CEO interview:
``The only way to defeat terrorism here is not to be standing there whingeing with your aircraft on the ground looking for subsidies. It's to get out there, with lower fares, and persuade people to travel more often.''
to read the full article:
If airlines CEO do what they have to do, no airline should disapear for this reason. If airlines go bankrupt, of course they will blame the attack instead of their mistakes.
But remember. Airlines have been grounded for 4 days. In one year, you have 365 days. Then, even if I agree that the amounts (loss of revenue + costs) are huge, it is only 1.1 % of the yearly activity !!!!
If airlines do what O'Leary says, to retrieve passengers confidence, YES, they will loose money. But NO, they will NOT be bankrupt !!!!!