You can get wine shipping boxes almost anywhere. In SA, we got them in wine stores. In Australia they sell them at the post office. We also buy wine online and it comes in sturdy packing boxes. When we are traveling to buy wine, we take strong empty ones with us so we don't have to keep buying new ones. They are sturdy enough to check the wine without issue. A case of wine is below the weight limit of almost all airlines for checked bags.