TSA Liquid Limit
What Can I Bring?

TSA Liquid Limit: What You Can Bring in Your Carry-On

Understanding the Transportation Security Administration (TSA) liquid limit helps you move through airport security with confidence. The TSA regulates how liquids, gels, and aerosols are packed in carry-on luggage departing from U.S. airports. Here’s everything you need to know before you fly, along with practical tips from travel experts.

The 3-1-1 Rule Explained

he TSA liquid rule is commonly called the 3-1-1 rule. It applies to all carry-on bags.

3: Each liquid container must be 3.4 ounces or 100 milliliters or less. The size printed on the container determines eligibility, even if it is not full.

1: All liquid containers must fit inside one clear, quart-sized, resealable plastic bag.

1: Each passenger may bring one quart-sized bag of liquids in their carry-on.

This rule applies to carry-on luggage only. If a container is larger than 3.4 ounces, it must be packed in checked luggage (with exceptions for certain hazardous materials).

What Counts as a Liquid?

Many travelers are surprised by how broadly liquids are defined. If it can pour, spread, spray, or smear, it is usually treated as a liquid at security. Common examples include:

• Water, coffee, juice, and other beverages
• Shampoo, conditioner, and body wash
• Lotion and sunscreen
• Toothpaste
• Hair gel and styling creams
• Liquid makeup and foundation
• Perfume and cologne
• Peanut butter and soft cheeses
• Soups and sauces

Even peanut butter and mascara fall under this category. If it can pour, smear, or spread, it likely counts as a liquid. When in doubt, assume it falls under the 3-1-1 rule.

Medications and Special Exceptions

Certain liquids are allowed in quantities larger than 3.4 ounces but must be declared at the security checkpoint.

These may include:

• Medications: You can bring medically necessary liquids, gels, and aerosols in reasonable quantities exceeding 3.4 oz. Declare them at the checkpoint.
• Infant and child nourishment: Formula, breast milk, baby food and juice are permitted in larger quantities.

• Over-the-counter medically necessary liquids

Liquids in Checked Bags

The 3-1-1 rule applies only to carry-on luggage. Larger containers may be packed in checked baggage.

However, some items are restricted in checked luggage due to safety regulations, including certain flammable or pressurized products. Always review airline guidelines before packing.

Duty-Free Purchases

Liquids purchased in airport duty-free shops after security screening are typically permitted in carry-on bags. These items must remain sealed in tamper-evident packaging with proof of purchase.

If you have a connecting flight, additional screening rules may apply.

Tips for Packing Liquids

• Use travel-sized containers clearly labeled 3.4 ounces or smaller
• Place your quart-sized bag near the top of your carry-on
• Seal containers tightly to prevent leaks
• Declare larger medically necessary liquids at screening

Preparing in advance helps you move through security efficiently and protects your belongings.

Common Mistakes to Avoid

• Bringing full-size toiletries: A 6 oz bottle of shampoo isn’t allowed, even if it’s half-empty.

• Forgetting to separate your liquids: This can delay your screening and may lead to confiscation.

• Ignoring regional differences: While the TSA governs U.S. airports, other countries may have similar, but not exactly identical, rules.

Why It Matters

Understanding TSA liquid limits reduces stress on travel day. When you pack correctly, security screening is faster and more predictable. A few minutes of preparation ensures a smoother start to your journey. It's important to note that TSA regulations are subject to change, so it's always a good idea to check the TSA website or contact the airline directly for the most up-to-date information.