how many oz can you carry on a plane

The standard rule for carrying liquids on a plane in carry-on luggage is the TSA 3-1-1 rule: Each liquid container can be no larger than 3.4 ounces (100 milliliters), and all containers must fit into a single quart-sized transparent, resealable bag. Only one such bag is allowed per passenger. This means you can typically carry about 7-8 containers of 3.4 ounces each, approximately 25 liquid ounces total, as long as they fit into the quart bag. However, this rule is specific to many airports, including the U.S. In some regions like parts of the European Union and select airports in the UK with advanced 3D CT scanners, containers up to 2 liters are now allowed, but this is not yet universal. The U.S. TSA is still enforcing the 3.4-ounce limit nationwide with no official timeline for change, although changes may come in the future. Checked baggage can typically carry larger quantities and sizes of liquids, with certain exceptions for hazardous materials or specific regulations.