Each passenger may carry liquids, gels and aerosols in travel-size containers that are 3.4 ounces or100 milliliters. Each passenger is limited to one quart-size bag of liquids, gels and aerosols.

For carry-on luggage, you must adhere to the 3-1-1 liquids rule: each liquid, gel, or aerosol container must be 3.4 ounces (100 milliliters) or less. All these containers must fit into a single one-quart, clear, resealable plastic bag, and you are limited to one bag per passenger. This includes common items like toothpaste, shampoo, and perfume. However, there are notable exceptions: medically necessary liquids, baby formula, and breast milk are allowed in reasonable quantities exceeding 3.4 oz, though they must be declared to security for separate screening. If you need to bring more liquids, there is essentially no ounce limit for checked baggage, provided the total weight of the suitcase stays within your airline's limit (usually 50 lbs). In 2026, advanced CT scanners at many airports may allow you to leave these liquids inside your bag, but the 3.4 oz volume limit still strictly applies.

The amount of liquid you can bring on a flight is regulated by the Transportation Security Administration (TSA) in the United States and similar agencies in other countries. Here are the general guidelines:

TSA Liquid Rules (U.S.):

• 3-1-1 Rule: You can carry liquids, gels, aerosols, creams, and pastes in containers that are 3.4 ounces (100 milliliters) or less per item.
• All containers must fit in a single, quart-sized, clear plastic, zip-top bag.
• One bag per passenger is allowed.

Exceptions:

• Medications, baby formula/food, and breast milk are allowed in reasonable quantities exceeding 3.4 ounces. They do not need to fit in the quart-sized bag but may require additional screening.
• Duty-free liquids purchased after security screening are allowed but must be in a secure, tamper-evident bag with the receipt visible.

International Flights:

Rules may vary by country, but most follow similar guidelines (e.g., 100 ml per container, 1 liter total in a clear bag). Check with your airline or the local aviation authority for specifics.

Carry-On vs. Checked Bags:

• Checked luggage: You can typically pack larger quantities of liquids, but check with your airline for weight and size restrictions.

Always verify with your airline and the relevant security authority before your flight, as rules can change. Safe travels! ✈️