What is the 3 1 1 rule on Delta Airlines?

You are allowed to bring a quart-sized bag of liquids, aerosols, gels, creams and pastes through the checkpoint. These are limited to 3.4 ounces (100 milliliters) or less per item. This is also known as the 3-1-1 liquids rule.



The "3-1-1 Rule" on Delta Airlines (and all US-based carriers) is the TSA-mandated standard for carrying liquids, gels, and aerosols through security in 2026. The rule breaks down as follows: 3 refers to the maximum size of each container, which is 3.4 ounces (100 milliliters); 1 refers to the requirement that all these containers must fit into one clear, quart-sized, zip-top plastic bag; and the final 1 indicates that each passenger is limited to one bag. This includes items like toothpaste, shampoo, lip gloss, and even "spreadable" foods like peanut butter. On Delta, if you are caught with containers larger than 3.4 oz at the checkpoint, they will be confiscated, even if they are only partially full. Exceptions are made for "essential" liquids, such as prescribed medications, baby formula, and breast milk, which must be declared to security officers for separate screening. In 2026, many airports are installing CT scanners that allow you to keep your 3-1-1 bag inside your luggage, but the volume and quantity limits still apply.

People Also Ask

Is toothpaste considered a liquid by the TSA? Yes, toothpaste must adhere to the 3-1-1 rule for liquids and gels. Toothpaste can be brought through TSA security in your carry-on as long as it is 3.4 ounces (100 milliliters) or less and placed in a 1-quart bag.

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Back here in the U.S., though, 3-1-1 remains the prevailing order, for the foreseeable future, when it comes to liquids, gels, aerosols, creams, and pastes. And those rules remain: No single bottles of more than 3.4 ounces, all bottles in one clear plastic bag, with no more than one such bag per passenger.

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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.

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All carry-on items must meet Federal Aviation Administration (FAA) regulations and may not exceed 22 x 14 x 9. The FAA mandates that all carry-on items fit under a seat or in an enclosed storage compartment.

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But what are they, and is deodorant considered a liquid when flying? Deodorant can be considered a liquid when flying if it is in a gel or aerosol form. If your deodorant is solid, though, the TSA will let you bring a standard stick of solid deodorant with you in your carry-on luggage.

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TSA counts mascara as a liquid, so the 3-1-1 rule for packing it in hand luggage applies. It states that all liquids have to be in 3.4 oz (100 ml) bottles or smaller and packed in a 1-quart bag. Mascara usually isn't above 3.4 oz, so you're free to pack it in your hand luggage.

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Safety Razors: Because the razor blades are so easy to remove, safety razors are not permitted in your carry-on luggage with the blade. They're fine to pack in your carry-on without the blade. The blades must be stored in your checked luggage. The same applies for straight razors.

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Firearms, ammunition, and fireworks are prohibited, as are all knives and safety razors (including pocket knives and Swiss Army knives). Straight razors and replacement blades for straight razors are also not allowed. Most tools also cannot be packed in carry-on luggage, as they have the potential to cause harm.

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Yes, you can take tweezers on a plane and pack them in your carry-on and/or checked bag. It's beneficial to pack them properly to avoid any inconvenience.

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As stated in the TSA liquid regulation, it is the size of the container that counts, not the actual contents. A 125 ml tube of toothpaste that has been half used up is not permitted, but a full 100 ml tube is.

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You are allowed to bring a quart-sized bag of liquids, aerosols, gels, creams and pastes through the checkpoint. These are limited to 3.4 ounces (100 milliliters) or less per item. This is also known as the 3-1-1 liquids rule.

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Basic Economy, Main Cabin, and Delta Comfort: 2 free bags (50 pounds (23 kg) each) Delta Premium Select: 3 free bags (50 pounds (23 kg) each) First Class and Delta One: 3 free bags (70 pounds (32 kg) each) Your bags can be 62 inches (total length + width + height)

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The Bottom Line. Chapstick, lipstick, and solid lip balms are not considered liquids by the TSA and can be thrown into your handbag or carry-on without any issues. Liquid lip gloss, jars of petroleum lip balm, and other lip care liquids must be placed in your clear liquids bag for security checkpoint screening.

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Carry it – wipes are not liquids, so load up on what you need. Carry it – Mascara is small enough to fit easily in your quart-sized bag. If you plan to travel with other personal hygiene tools, check out this chart for what you can and cannot bring with you in your carry-on.

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Your bag will have to fit into the sizer for it to be approved as a carry-on. Having a flexible fabric bag is advantageous in this situation because you'll be able to squeeze it in even if it's slightly oversized. Usually, many airlines won't check every carry-on but will instead go for ones that look oversized.

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Solid food items (not liquids or gels) can be transported in either your carry-on or checked baggage. TSA officers may instruct travelers to separate items from carry-on bags such as foods, powders, and any materials that can clutter bags and obstruct clear images on the X-ray machine.

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