Why this matters

Food is one of the most common things travelers carry, and the rules are simpler than most people expect: airport security cares about the form of the food, not the food itself. If it is solid, it flies. If it pours, spreads, or sloshes, it is a liquid and falls under the 3-1-1 rule.

The bigger trap is international travel. Security screening and customs are two different checkpoints with two different rulebooks — a sealed pack of beef jerky sails through TSA and then gets confiscated (or fined) at the border in Australia or New Zealand.

Restrictions

  • Solid food: allowed in carry-on and checked bags without quantity limits. Sandwiches, chips, candy, baked goods, hard cheese, and dried fruit are all fine.
  • Liquid and gel foods: soup, salsa, yogurt, honey, jam, oils, and spreads must be in containers of 3.4oz (100ml) or less in carry-on, all fitting in one quart-size bag. Larger amounts go in checked baggage.
  • Frozen items: ice packs and frozen food are allowed if completely frozen solid at screening; partially melted means liquid rules apply.
  • Powders over 12oz (350ml), like protein or baking powder, may need separate screening on flights to the US.

What the official guidance says

TSA's "What Can I Bring" database lists most foods as allowed in both bag types, with liquid-form foods limited by the standard 3-1-1 liquids rule. Officers may ask you to separate food from your carry-on so it can be X-rayed clearly. TSA also notes that whether food is allowed into another country is up to that country's customs authority — security clearance is not customs clearance.