You can bring liquids in containers of 3.4 ounces (100 milliliters) or less on a plane in your carry-on luggage. All these containers must fit within one clear, resealable quart-sized (approximately 32 ounces) plastic bag. This is commonly known as the TSA's 3-1-1 liquids rule. The total liquid volume you can carry is roughly the amount that fits into this quart-sized bag, approximately 25 to 32 ounces total depending on the bag size. Some airports, particularly certain UK airports, have started using advanced scanners that allow larger individual liquid container sizes, up to 2 liters per container, but these are exceptions and not yet widespread. The standard rule remains for most flights internationally. Checked luggage has more lenient restrictions regarding liquids, allowing larger volumes but still prohibiting flammable, toxic, or illegal liquids. In summary:
- Carry-on liquids: containers ≤ 3.4 oz (100 ml)
- All containers fit in one quart-sized bag (~32 oz capacity)
- Total carried liquid volume roughly 25-32 oz max in carry-on
- Checked bags have fewer restrictions on liquid quantities
This ensures a smooth passage through security checkpoints while maintaining safety standards.
