What size plastic bag for liquids on plane?

You are allowed to bring a quart-sized bag of liquids, aerosols, gels, creams and pastes in your carry-on bag and through the checkpoint. These are limited to travel-sized containers that are 3.4 ounces (100 milliliters) or less per item.



According to the TSA's "3-1-1" rule and similar international aviation security standards, you must place your travel-sized liquids in a single, clear, quart-sized, resealable plastic bag. A quart-sized bag roughly measures 6 inches by 9 inches (15.24 cm by 22.86 cm). In countries using the metric system, such as the UK and much of Europe, the requirement is often specified as a transparent bag with a capacity not exceeding one liter. It is essential that the bag is truly resealable (typically a zip-top style) and that all your liquid containers—each of which must be 3.4 ounces (100ml) or less—fit comfortably inside so the bag can close completely. Each passenger is strictly limited to one such bag. While some modern airports in 2026 are installing advanced CT scanners that allow liquids to stay inside your luggage, the quart-sized bag remains the global baseline for security compliance. If your bag is significantly larger than a quart, security officers may require you to discard the excess or move items into a compliant bag provided at the checkpoint. This rule is designed to limit the total volume of potentially hazardous liquids brought into the cabin.

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In short, the 3-1-1 rule is: Each liquid you bring through the TSA checkpoint must be in a 3.4-ounce or smaller container (3), all containers must be placed inside one clear quart-size plastic bag (1) and each passenger is only allowed one plastic bag (1).

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What TSA wants is a bag that is the approximate dimension of a quart-size bag and is clear. That means that a ziploc bag from the grocery store works just fine as long as it is not larger than one quart.

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Current TSA regulations allow liquids, aerosols, gels, creams and pastes that are under 3.4 oz. and 100 ml to be carried through TSA security checkpoints. These items must be packed in 1 quart-sized, resealable bag and each passenger is limited to 1 bag.

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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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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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It can be as simple as a clear plastic sandwich bag. If you plan to carry liquids on a plane, they do need to be in a clear plastic bag that is quart size at it's biggest.

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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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Can you bring more than one ziplock bag on a plane? According to the TSA Liquids Rule, you are allowed only 1 clear bag that has 1-quart capacity.

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London City Airport has scrapped the 100ml liquid limit by using high-tech scanners which also allow electronics to be kept in hand luggage at security.

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TSA food rules. According to the TSA website, travelers are able to bring solid food items onto a plane in either carry-on or checked baggage.

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Solid food items (not liquids or gels) can be transported in either your carry-on or checked bags. Liquid or gel food items larger than 3.4 oz are not allowed in carry-on bags and should be placed in your checked bags if possible.

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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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The TSA rules allow for lipstick to be considered a solid, not a liquid or gel, which means that you do not have to take it out of your carry-on during the security check.

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TSA Rules for Makeup
Are gels, creams, and other semi-fluid liquids counted, or are they exempt? The bottom line is that basically anything with moisture is considered a liquid and must abide by the 3-1-1 rule. Aerosol containers, like certain setting sprays, are also covered by this rule.

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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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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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TSA considers tweezers to be completely safe, so they're allowed on planes. You can pack tweezers in hand or checked baggage without any packing restrictions. But TSA doesn't allow packing sharp objects in hand baggage because some of them could be used as potential weapons.

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