Airlines?

Is this a good time to get back into airlines' investment? Most of them have cut down on labor cost, and the air traffic becomes more and more intense. It has been over 3 years since 9/11 and majority of people are not afraid to flight again.
If airlines can curb down the cost of the enhanced security that they are reequired to provide now and also minimize fuel expenses, they can become a lucritive invetment once more. Because they were such when thew Twin Toweres still stood. Is the situation with the international terrorism favourable? Holiday season is coming up and more people will choose airlines to travel, but till we still hear about airlines going bankrupt, few people will invest in them.