I was able to make almost 1/2 of my hat on the plane yesterday... and the night before... we flew from 8:45pm- 6:45 am.. (with one hour's time zone change in there for good measure) So, I was able to knit quite a bit... I can't sleep on planes and if I hadn't gotten so tired.. I probably could have finished it.
I'll work on it again when I fly out of here on June 15. No time right now.. unless everything gets done.