Wow, BOS-NWA, this must be some kind of a record for a bump--5+ years between posts.

As a consultant, I've been told that my client will not pay me for hours spent flying, unless I am also doing work. I save up presentations, white papers, etc. to read on the plane , but I still travel nights and weekends most of the time. Meanwhile, the client's employees pretty much always travel during business hours, to the point where it can be difficult to schedule around them. ("Sorry, I'm traveling all day Friday. Did I forget to update my Outlook?")