Can You Bring a Metal Flask on a Plane? TSA Rules Explained

Learn if you can take a metal flask on a plane and what TSA rules apply to liquids in carry-on luggage.

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Yes, you can take a metal flask on a plane, but it must be empty when you pass through airport security. TSA rules restrict liquids over 3.4 ounces (100 milliliters) in carry-on luggage. Once past security, you can fill it up. In checked luggage, it can be full.

FAQs & Answers

  1. What liquids can I carry on a plane? You can carry liquids in containers of 3.4 ounces (100 milliliters) or less in your carry-on baggage.
  2. Can I take filled bottles through airport security? No, filled bottles are not allowed through security; only empty containers are permitted.
  3. What items are prohibited in carry-on luggage? Prohibited items include sharp objects, flammable liquids, and weapon-like items.
  4. Can I take a flask in checked luggage? Yes, you can take a filled flask in your checked luggage without restrictions.