[Ozarkian]

You missed the parent's point, which is that a significant fraction of people flying to London because they have business to do in London, and the value of their time is not zero. If their time is wasted, that has a real cost in terms of lost productivity.

[bee_rider]

I don’t think I did miss their point. The loss is not the deletion of their productivity, it is the cost of shifting that productivity back by a day or so.