In message , at 20:22:32 on Mon, 11 Jun
2018, Graeme Wall remarked:
It's a marginal problem. Some destinations aren't worth flying to with
either the transfer passengers or the local passengers as the sole load.
Add the two together, and you have a full plane which makes a profit, as
against two part full ones, neither of which is profitable. It costs
almost the same to fly empty as full.

So currently no actual examples from either roland or you.
I remember when flights to Seattle from Heathrow were only four
times a week. Picking up transfer passengers from Europe meant they
could go to daily.
Although I quite liked being "stranded" in Seattle for a day after
my meeting ended - I could play tourist. Not every businessman would
think the same.

As long as you weren't sleepless

I was there almost a decade before the film. On the other hand, in
between then and the film, I did arrange to meet someone on that same
viewing deck of the Empire State Building. Art imitating life.
--
Roland Perry