Sadly – this is not a good idea. As this is a dry powder – it does not freeze solid, and it returns to a higher active temperature very fast. This activates the Pre-biotics, Probiotics (which feed off the Pre-biotics) and the Digestive Enzymes (which feed off all the wonderful plant nutrients in the tub). Rather buy a box of travel sachets – made for exactly this purpose. They do not need to be kept cold or in the freezer at all – and are in a triple foil packet to protect them from all security scanners and airport x-rays.