if you only have a bit, i'd stick it in that little change pocket in your jeans. they don't frisk you or anything (unless you set off the detector), and even if they randomly pull you aside, all they do is check your bags and maybe wave that wand thing over you. i'd make 100% sure i don't set off the detector (don't wear a belt, take all the change and metal stuff out of your pockets) and stick it in my pocket rather than try to stash it in my bag that goes through the x-ray. remember- they don't x-ray you, so its probably safer to have it on you.

-or-

you can do the ol' stick it up da poop chute!

i rarely see any dogs on domestic flights. a girl i know was flying back from jamaica and stashed it in her poonanny. i laughed my ass off when she told me that.

best of luck and let us know how you make out.