CTLawyer,
>> My flying time on business is working time. Coach class on a budget airline does not have the space and quiet conducive to my work.
yes, I do the same. Just in that case, it would involve staying overnight at the client’s expense and missing driving kids to school in the morning.
I once felt very guilty going on a redeye, while my wife was dealing with a newborn. I had to ask myself, do I really dare to enjoy several hours of sleep, and that made me feel even worse? Hashem took care of my guilt feeling. A Chinese father or grandfather was flying with a small baby and signing a very annoying “niggun” the whole flight again and again. I presume this was Eliahu, as I never saw anything like that again in my life.