First of all, I would like to work for this hypothetical employer.
My decision would based on length of flight vs. money I would receive. On a shorter flight, $200 would probably be enough to get me onto the low fare carrier. On longer trips, say ATL - PDX, it would take more. Maybe $4-500 would be the threshold where I would go on the cheap.
Interesting question.
[This message has been edited by bnaboy (edited 03-10-2002).]