Cigars are allowed in both checked & carry on bags, I always travel with mine and have done both depending where I'm going. I always put my accessories in my checked bags, TSA will confiscate cutters & lighters tho if the lighter is empty (no butane) they may let you keep it.
I have different size hard cases and travel with those, that way I don't have to worry about the cigars being damaged. If you don't have a case, I'd say use a zip lock bag & wrap them in clothing to pad them.
