Sachin Walls
When it comes to travelling by air, airport security has strict guidelines regarding what constitutes a liquid. According to the TSA and international airport security, liquids include substances that are typically considered solids or gases, such as aerosols, gels, creams, and pastes. This is commonly referred to as the 3-1-1 rule, which allows travellers to carry containers of up to 3.4 ounces (100 ml) that must fit into a single quart-sized 1-litre clear bag. Any containers exceeding this limit should be placed in checked baggage. However, there are exceptions for medical necessities and duty-free liquids, which may be allowed in larger quantities under certain conditions. The definition of liquids can vary, and items such as mascara, deodorant, and even eyeliner are sometimes considered liquids due to their spreadable or liquid-like consistency.
| Characteristics | Values |
|---|---|
| Container size | 3.4 ounces or 100 ml |
| Container type | Must be travel-sized |
| Container material | Plastic |
| Container seal | Must be sealed |
| Container transparency | Must be clear |
| Container capacity | All containers must fit in a one-quart bag |
| Number of bags allowed | One bag per passenger |
| Bag capacity | One-liter bag |
| Bag dimensions | 15.24 cm by 22.86 cm (6 in. by 9 in.) or 20 cm by 17.5 cm (8 in. by 7 in.) |
| Exemptions | Medically necessary liquids, baby formula, live fish, prescription medication |
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What You'll Learn
- Liquids, gels, and aerosols are restricted to 3.4 oz or 100 ml containers
- Medically necessary liquids are exempt from restrictions
- Baby formula and live fish are allowed in carry-ons
- Frozen solids are exempt from liquid restrictions
- Liquids purchased at duty-free can be carried in secure, tamper-evident bags
Liquids, gels, and aerosols are restricted to 3.4 oz or 100 ml containers
Liquids, gels, and aerosols are restricted to containers that are no larger than 3.4 oz or 100 ml. This restriction applies to items such as toothpaste, shampoo, face wash, and sunscreen, as well as beverages, water, wine, beer, soup, maple syrup, perfume, and lotion. These items must be packed in checked baggage if the container is larger than the specified limit.
There are some exemptions to the 3.4 oz or 100 ml restriction. Duty-free liquids purchased internationally and transported in a secure, tamper-evident bag can be carried in quantities exceeding the limit. Additionally, certain medical necessities, such as distilled water for CPAP devices and diabetic supplies, are allowed in larger quantities. Baby food, milk, liquid formula, water, juice, and breast milk are also exempt from the restriction when travelling with an infant.
It is important to note that any liquid, gel, or aerosol that alarms during the screening process will require additional screening. To facilitate the screening process, it is recommended to separate these items from your carry-on baggage and place them in a clear, resealable plastic bag with a maximum capacity of 1 litre. This bag should be removed from your carry-on and placed in a bin at the screening point.
Food items that are normally liquids or gels but have been frozen solid and are solid at room temperature are not permitted in carry-on baggage. Solid foods with less than 100 ml of liquid, such as canned tuna, are allowed and must be placed in the same clear plastic bag as other liquid containers. Alcoholic beverages can be packed in checked baggage if the alcohol percentage by volume is 70% or less.
By following these guidelines, passengers can ensure a smoother security screening experience when travelling with liquids, gels, and aerosols.
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Medically necessary liquids are exempt from restrictions
Liquids, gels, and aerosols are restricted to containers of 3.4 ounces (100 ml) or less in carry-on luggage. Any larger containers must be packed in checked baggage. However, medically necessary liquids are exempt from these restrictions and can be transported in larger containers. This exemption applies to prescription drugs, liquid medications, and other medically required liquids such as water, juice, or "liquid nutrition" for passengers with medical conditions or disabilities.
Passengers are allowed to carry larger amounts of medically necessary liquids, gels, and aerosols in reasonable quantities for their trip. These items must be declared to TSA officers at the checkpoint for inspection. It is recommended to carry only the medically necessary liquids needed during the flight in your carry-on bag. However, travel experts suggest bringing all doses of medications and medical supplies needed for the trip in carry-on luggage if possible.
To transport medically necessary liquids in larger containers, inform the security officer of the items before the screening process and place them in a separate bin. Passengers have the option to request a visual inspection if they do not want their medications screened by X-ray. This request must be made before any items are sent through the X-ray machine. Additionally, ice packs are permitted to keep medications and liquid medical supplies cold, but they must be declared to the screening officer.
In some cases, proof may be required for liquid medications. For example, when traveling to the United Kingdom, passengers must carry a letter from a doctor or a copy of a prescription for liquid medications over 100 ml. No proof is needed for medicines in tablet form or liquids in containers of 100 ml or less. Regulations for controlled substances, such as cannabis, codeine, fentanyl, and testosterone, may also vary as they are under strict government control.
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Baby formula and live fish are allowed in carry-ons
Liquids, gels, and aerosols are typically restricted to containers of 3.4 ounces (100ml) or less in carry-on luggage. Any larger containers must be packed in checked baggage. This restriction was created by explosive experts to limit hazardous liquids. However, there are exceptions to this rule for certain items. Baby formula and breast milk are considered medically necessary liquids and are therefore exempt from the 3.4-ounce restriction. Passengers are allowed to carry formula, breast milk, toddler drinks, and baby/toddler food (including puree pouches) in quantities greater than 3.4 ounces in their carry-on baggage. These items do not need to fit within a quart-sized bag, and there is no requirement for the child to be present or travelling with the passenger.
Live fish are also allowed in carry-on baggage after inspection by a TSA officer. The fish must be transported in a clear, transparent container with water.
Other exceptions to the 3.4-ounce liquid restriction include duty-free liquids purchased internationally, medically necessary liquids, and liquids for diabetes. Additionally, passengers are allowed to carry a quart-sized bag of liquids, gels, creams, and pastes that are 3.4 ounces or less per item in their carry-on luggage. This bag facilitates the screening process and should be separated from carry-on baggage.
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Frozen solids are exempt from liquid restrictions
Liquids, gels, creams, and pastes are restricted to containers of 3.4 ounces (or 100ml) for carry-on luggage. This is known as the 3-1-1 rule, which was introduced in 2006 after a foiled terrorist attack involving liquid explosives. Any liquids larger than this must be packed in checked luggage. This rule also applies to non-solid foods. However, there are some exemptions to the liquid restrictions. Frozen solids, for example, are exempt from the liquid restrictions.
Frozen liquid items are allowed through the security checkpoint as long as they are completely frozen when presented for screening. If the frozen liquids are partially melted or slushy, they must follow the 3-1-1 rule. Any ice packs accompanying frozen foods must also be completely frozen. If they are partially melted, they will not be permitted unless they are being used to maintain a cool temperature for medically necessary products.
Solid foods are allowed to pass through security in both carry-on and checked bags. In order for a food item to be considered a solid, it must be solid at room temperature. Solid food with less than 100ml of liquid, such as canned goods, are allowed in carry-on luggage. These items must fit in the same clear, closed, resealable 1L plastic bag with all other containers of liquids, food, or personal items.
Some other exemptions to the liquid restrictions include distilled water for CPAP (Continuous Positive Airway Pressure) devices, juices or gels for diabetic or other medical conditions, and prescription medication. Medically necessary food items are also exempt from the 3-1-1 rule. Baby food, milk, liquid formula, water, and juice are allowed in quantities greater than 100ml for infants younger than two years of age.
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Liquids purchased at duty-free can be carried in secure, tamper-evident bags
Liquids, gels, and aerosols are typically restricted to containers of 3.4 ounces (100 ml) or less in carry-on luggage. Any larger liquids must be packed in checked baggage. However, there are certain exceptions to this rule, such as for medical necessities.
One notable exception to the 3.4-ounce restriction is for liquids purchased at duty-free shops. Liquids purchased at duty-free can indeed be carried in secure, tamper-evident bags. These bags are designed to allow an exemption to the liquid volume rules for items bought at duty-free airport retailers or on board an aircraft.
The use of tamper-evident bags is an additional security measure that aligns with international security protocols. These bags are typically transparent, sealed, and marked as "Security Tamper Evident Bag" (STEB). They are widely accepted in many countries, including member countries of the European Union, the United States for departing international flights, Iceland, Norway, Japan, Singapore, and Australia.
However, it is important to note that not all countries accept these bags. For example, Japan does not use or accept the ICAO tamper-evident duty-free bag. Additionally, even in countries that do accept them, there may be specific requirements that must be met. For instance, in the United States, duty-free liquids must be purchased post-TSA security and cannot be carried on connecting flights within the US.
To ensure compliance with regulations, it is recommended to check the relevant country-specific guidelines before travelling with duty-free liquids.
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Frequently asked questions
The 3-1-1 rule, also known as the international guideline, states that liquids must be inside containers that are 3.4 ounces or 100 ml or less that can fit into one quart-size (1-liter) bag. This rule was created by explosive experts to limit hazardous liquids on flights.
The TSA considers solids or gases such as aerosols, gels, creams, and pastes as liquids. This includes items like toothpaste, hair spray, peanut butter, shampoo, soup, mascara, and mouthwash. If you can squeeze, spray, or spread a substance, it is considered a liquid.
Yes, there are some exceptions to the liquid rules. Medically necessary liquids, baby formula, live fish, and distilled water for CPAP devices are allowed. Additionally, duty-free liquids purchased internationally and packed in secure, tamper-evident bags are permitted.
