Tetchytyke
Veteran Member
The Newcastle-London and London-Spain legs are going to fly regardless. Newcastle-Spain is additional flights, which is always going to be more significant than relative efficiency.
Hub-and-spoke has its place, where lots of people connect through a hub into a long-haul network where they're scattered to the four winds.
But where there is strong demand between a destination pair, then direct flights make more sense. Yields and loads on Newcastle-Spain flights are high, so if you diverted everyone through hub-and-spoke you'd need bigger planes or even duplicates on each leg.