Originally Posted by
FullWings
I wonder what the ticket prices will be? One 20-hr flight uses considerably more fuel than two 10hr ones.
This is only one side of the cost equation. More fuel, but less airframe hours, less cycles for any cycle-related maintenance, etc. I'm sure the long haul carriers know the numbers, but traditionally nonstops have always expanded with the capability of aircraft to overfly previous intermediate stops.
Furthermore, as I have described many times, cost and revenue are not directly connected. Revenue is driven by what passengers will pay you, not by how much it costs you to provide it.