Originally Posted by
chornedsnorkack
.....but cannot carry passengers inside USA.
I am pretty sure they don't fly empty between LAX and JFK....
The issue with such long flights is not only fuel but also the passengers and crew. It is quite something to be in an aircraft for more than 15 hours at a time.
SIN-EWR as one of the longer scheduled flights at the moment would still be a bit shorter than SYD-JFK.
AKL-JFK on the other hand is quite a bit shorter than SIN-EWR.