What I have always wondered (and this is where an actual dispatcher could help) is whether under such circumstances, significant $ could be saved by knowing that the flight will have to stop midway (e.g. KEF) from the beginning, and only loading that much fuel + reserve? I.e. they would save weight or increase loading capacity.
Because as it is, my impression is that they're loading almost all the fuel, and still don't get there in one stop...
And shouldn't this story cover Jetblue's A320s going west across the US in the same way?
When these fuel stops occur they are generally planned. So the fuel loaded is for the trip to the destination airport, which is the fuel stop point in that case. They don't fill it up to the top and hope they make it across the Atlantic.