While the TSA allows some canned goods through airport security, many are restricted due to size and liquid content regulations. Canned foods containing liquids must be in containers of 3.4 ounces or less, which complicates what can be taken onboard. Canned goods resembling prohibited items may also be rejected at the checkpoint. Canned bread, coffee, and nuts are generally acceptable, while canned baby formula concentrate is an exception under medically necessary items, despite its larger size.
If your can resembles a prohibited item or looks unusual on the X-ray, you probably won't be able to take it through the checkpoint, even if it's smaller than 3.4 ounces.
According to TSA regulations, canned food containing liquids must adhere to the 3-1-1 rule, meaning the entire can must hold no more than 3.4 ounces.
Canned bread can go through the checkpoint as it’s classified as a solid, while canned baby formula concentrate is exempt due to its medical necessity.
The TSA does not outright ban all canned goods; however, various regulations can restrict which items may pass through security checkpoints.
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