i carry mine on - traveling domestically, to europe and to asia.
i checked mine once and it was lost (got it a few days later). forget it.
you have to be stern, persistent and determined, but you can check yours on.
i pack mine in a 4 wheeled suitcase like this one <a target=_blank class=ftalternatingbarlinklarge href="http://shop.samsonite.com/storefront/suitcases/21-quot-expandable-spinner/prod18571XXXX-cC05-.html">http://shop.samsonite.com/stor...od18571XXXX-cC05-.html</a> (not sure if that's the exact size)
it's your health. your lungs. and doing meds now will ensure you have a longer life. even for one week.