I travel for business a lot.....
...and I carry one bag and one bag only for flight travel up to two weeks long.
Go here: http://www.onebag.com/
This site will give you the philosophy on how and what to pack for light weight air travel.
Then go here and buy this: http://www.redoxx.com/air-boss/91018/product
or buy this: http://www.redoxx.com/sky-train/91019/product
Thank me after your first trip.
1997 Ducati Monster 750
2004 Suzuki V-Strom 650
2004 Honda RC51