Originally Posted by
mattm199
One reason for burning less fuel could be a tail wind (or less than usual prevailing head winds). Was the flight arriving ahead of scheduled time?
See that's the weird thing.. according to flightaware.com the flight arrived within 2 mins of the other flights flying the same route that week.
The weather was really bad with moderate turbulence, so maybe they slowed down a bit and there were less headwinds, so the time was about the same but the energy expended by the jet less.