This is what you want...
http://www.pelican.com/cases_detail.php?Case=1560LOC
Are you checking the luggage or carry on?
In either case I use this when I travel for business.
It is a little "oversize" for a carry on, but I have never been unable to take it on a plane and I fly 100+ flights a year.
You know that the Pelican case is water proof so no worries there...
I carry on 95% of the time and I also have a computer bag that I can hang on the roller luggage, so that is very convenient. Looks like the pelican will accomplish all that. Thanks