What is the TSA's 3-1-1 Rule for Carry-On Liquids?

Learn about the TSA's clear plastic bag rules for carrying liquids on a plane and how to comply with the 3-1-1 rule.

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For a plane trip, you are typically allowed one quart-sized clear plastic bag for liquids, gels, and aerosols. Each container inside the bag must be 3.4 ounces (100 milliliters) or less. This aligns with the TSA's 3-1-1 rule: 3.4-ounce containers, 1 quart-sized bag, 1 bag per passenger.

FAQs & Answers

  1. What liquids are allowed in the clear plastic bag? You can bring liquids, gels, and aerosols that are 3.4 ounces (100 milliliters) or less in your quart-sized clear plastic bag.
  2. Can I bring more than one clear plastic bag on a plane? No, each passenger is allowed only one quart-sized clear plastic bag for carry-on liquids.
  3. What happens if my liquids exceed the limits? If your liquids exceed the allowed volume, they will not be permitted through security, and you may need to dispose of them.
  4. Are there exceptions to the 3-1-1 rule? Certain exceptions apply, such as medications and baby formula, which may not need to fit in the quart-sized bag.