The current TSA liquid limit for carry-on bags is that travelers may bring liquids, aerosols, gels, creams, and pastes in containers of 3.4 ounces (100 milliliters) or less per item. These containers must fit within one quart- sized clear bag, and only one such bag is allowed per passenger. This is commonly referred to as the "3-1-1 rule" (3.4 ounces, 1 quart-sized bag, 1 bag per passenger). Larger liquid items must be packed in checked baggage, with exceptions for medications, baby formula, and certain other items. This rule has been in place since 2006 as a security measure to prevent liquid explosives on planes. However, TSA is currently reviewing this rule, and Homeland Security Secretary Kristi Noem has indicated that changes to the liquid size limit might be announced in the future, though no specifics or timelines have been given yet. Additionally, there are exemptions that allow travelers to carry more than 3.4 ounces of certain liquids, such as prescription medications, baby formula, breast milk, and some other items. So to summarize:

• TSA liquid limit: 3.4 ounces (100 ml) or less per container
• Containers must fit in a single quart-sized clear bag
• Only one quart-sized bag per traveler
• Exceptions exist for medications, baby food, breast milk, etc.
• Potential rule changes under consideration but not yet implemented

This is the current standard as of 2025, with possible changes in the future depending on TSA policy updates. The 3.4-ounce carry-on liquid limit is still in effect for now.