The 16+ hour flight from Dallas to Sydney was on a Qantas airbus. This flight included many firsts for us: first flight over 10.5 hours, first time on Qantas, first crossing of the International Date Line, first time on a double-decker plane, and first time having a vacant seat between us -which meant this was the first time I actually slept a few hours on a plane.
At one point, I checked the monitor to observe our flight path and stats: