If you have 'dried' buds with branches that snap when you bend them, they will moisten up when you put them in jars. In my experience, you better be checking those jars 2 - 3 times a day for the first week, then daily for the next 2 weeks. If you're going to be gone for days and the bud in the jars is not holding steady at 63% RH or less, do NOT put them in jars with the lids on. You will return to jars of mold.
I would do what Budzbuddha said, put them in a paper bag and fold over the top while you're gone. Several guys here have mentioned that they have accidentally left buds in paper bags for months and the bud turned out fine. It's not ideal, but it's much better than coming home to moldy, unsmokeable product.