What does TSA allow and not allow on flights?

The Transportation Security Administration (TSA) has specific rules about what you can and cannot bring in your carry-on and checked bags. Here are a few key guidelines:
  • Liquids in carry-ons must follow the 3-1-1 rule: containers must be 3.4 oz (100 mL) or less, all must fit in one quart-sized clear bag, and each passenger is allowed one bag
  • Sharp objects, firearms, and tools are generally not allowed in carry-ons, but may be permitted in checked bags if properly packed
  • Food is usually allowed, but may need to be screened separately
  • Carry-on and checked bag rules differ, so always double-check based on how you plan to pack
If you’re unsure about a specific item, you can search for it directly using the TSA’s official site: Check what you can bring on the TSA website