These are the real reasons behind corporate flight departments. Dollar to dollar comparisons always fall short. The subjective costs (time, length of trip, locations etc.) are what one cannot see from the outside.

After 9 / 11, government discouraged high vis corporate execs from using public modes of transportation for security reasons (same reason our important elected reps use corporate air on "Fact finding" jaunts). It is very hypocritical of them to bash the execs use of corp. jets.

Now, if I am going to DC to beg for money, I may have to think about my mode of transport and maybe even my choice of lodging and restaurants.