haha,
I took a Half in my pocket, back east, on an airplane over the X-mas holiday.
No problem... except I started getting paranoid, because I could damm sure smell it. But I don't think anyone else could. I had it in a small plastic baggie, twice.
I would say, just don't fly in a plane!
Peace -

P.S. - Once you get across the border, it is just a misdemeanor for less than an ounce for anyone over 21, I think they just give you a ticket.