Originally Posted by
Ldnn1
I do wonder if flight search engines could help with this. e.g. if you search for HKG-LHR on 20 Jan, it would display early morning departures on the 21st alongisde the late night departures on 20th, much like National Rail does. Many flight search engines have a +/-1 day function but that's not quite the same.
Just search by arrival date and not departure date.
(Oops, I said they almost all do but looking at some of the more popular ones which I rarely use, apparently they don't

)