You can fly with cans of food, but whether they go in your carry-on or checked luggage depends on the consistency of the contents. The TSA and most global security agencies apply the "3-1-1 liquids rule" to canned goods; if the food contains liquid, gel, or a "spreadable" substance (like soup, sauce, beans in brine, or canned tuna in oil), the can must be 3.4 ounces (100ml) or less to stay in your carry-on. Since most standard food cans are much larger than this, they will likely be confiscated at security. However, you can pack an unlimited amount of canned food in your checked baggage, provided you stay within your airline's weight limits. A practical tip for 2026 travelers: canned goods are heavy and can appear "opaque" on X-ray machines, often triggering a manual bag search. It is also wise to wrap cans in plastic bags or clothing to prevent a "pressure-pop" or leak that could ruin your belongings. For international flights, always check customs regulations, as many countries prohibit the import of canned meats or vegetables to prevent agricultural pests.