i bet you could eat them while walking thru security and not have any problems... I've never tried them, I'm going to make some later today, but my understanding is that they dont smell, and you cant see any weed... so you should be fine no matter when you eat them. I say take them in your carry on, eat them a half hour before your flight leaves, and have a good time... make sure you laugh when the flight crew tells you to "enjoy your flight"