Yes, you can pack cans—such as soda, beer, or canned food—in your checked luggage, as they are not prohibited by the TSA or international aviation authorities. However, there are significant practical risks to consider: the pressure and temperature changes in the cargo hold, combined with the rough handling of suitcases, can cause cans to burst or leak, potentially ruining your clothing and luggage. If you must pack cans, it is vital to wrap each one individually in a sealed plastic "Ziploc" bag and then cushion them heavily within your soft items to prevent them from hitting each other or the sides of the suitcase. For alcoholic beverages, there is no limit on cans with less than 24% alcohol (like beer), but those between 24% and 70% are limited to 5 liters per person. Always remember that cans are heavy and can quickly push your suitcase over the standard 50lb weight limit, leading to expensive "oversize" fees at the check-in counter.