Sachin Walls
Liquids, gels, and aerosols are restricted items at airport security. The restrictions were introduced in 2006 after security officials intercepted a plot to bomb an aircraft with liquid explosives. The restrictions vary depending on the country and the airport, but generally, liquids must be in containers of no more than 100ml and must fit into a clear, resealable, 1-litre bag. Some items are exempt from the 100ml rule, such as baby food and breast milk, and medication. Liquids purchased from duty-free shops may also be allowed on board if they are sealed in a secure, tamper-evident bag.
| Characteristics | Values |
|---|---|
| Volume limit | 3.4 ounces or 100 milliliters or 100 grams |
| Container type | Clear, resealable plastic bag |
| Container volume | 1 quart or 1 liter |
| Number of containers | 7-9 |
| Exemptions | Medication, baby food, breast milk, duty-free liquids, inbound international flights |
| Prohibited items | Gasoline, flammable liquids |
| Additional information | All liquids must fit in one bag. Any liquid that alarms during screening will require additional screening. |
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What You'll Learn
Liquids, gels and aerosols must be 100ml or less
Liquids, gels, and aerosols are restricted to containers of 100ml or less when passing through airport security. This rule applies to carry-on luggage and is known as the 3-1-1 rule. Each liquid container must be 3.4 ounces (100ml) or smaller and fit into a single, clear, resealable, quart-sized bag. Typically, seven or eight 3-ounce bottles will fit into this bag. This restriction is in place to help safeguard travellers and was implemented after a plot to bomb an aircraft with liquid explosives was intercepted in 2006.
While this rule covers the majority of liquids, there are some exceptions. Medically necessary liquids, gels, and aerosols are allowed through security and include items such as prescription medication, gel-based nutritional supplements, saline solution, and eye care products. Baby formula, breast milk, and gel-filled teethers are also permitted, and freezer packs are allowed to keep these items cool. Duty-free liquids are also exempt from the 100ml rule, but they must be sealed in a secure, tamper-evident bag.
Foods that are considered liquids or gels, such as yogurt, pudding, and peanut butter, are also subject to the 100ml restriction. However, foods that are normally liquid or gel but have been frozen solid are not permitted through security, even if they are frozen. For a food to be considered a solid, it must be solid at room temperature.
It is important to note that some liquids, such as gasoline or other flammable substances, are prohibited in both carry-on and checked bags. If you are unsure about a specific item, it is recommended to check the TSA's website, which provides a list of prohibited and allowed items.
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Medication is allowed in liquid form
There are strict limits on the amount of liquid that can be taken through airport security. Liquids, in this case, include aerosols, gels, creams, and pastes. In most cases, containers with liquids must be 100ml or less. However, medication is allowed in liquid form and is exempt from the typical liquid volume rules.
The Transportation Security Administration (TSA) allows larger amounts of medically necessary liquids, gels, and aerosols in reasonable quantities. These must be declared to TSA officers at the checkpoint for inspection. Medication that has been prescribed to you is a common item that qualifies as an exception. It is recommended that medication is clearly labelled so that officers can see what is inside. Depending on the situation, medication may be screened visually, with an x-ray machine, or with a vapor analysis. Medication may also be tested for traces of explosives.
If your medically necessary liquids cannot be opened or x-rayed, you will still be able to bring them on board, but you will likely be subjected to a pat-down screening. It is recommended that you get to the airport early if this is the case. You will also need to remove your shoes during the screening process unless you have a medical condition or disability that prevents you from doing so, you wear a prosthetic device, are over 75 years old, or have TSA Pre-check. If you cannot remove your shoes, they will be inspected and tested for explosives while you are wearing them.
You can also bring ice packs to keep medications and liquid medical supplies cold, as long as you declare them to the screening officer. It is also possible to bring duty-free liquids on board in secure, tamper-evident bags, as long as they remain sealed.
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Baby food and milk are exempt from liquid rules
For most liquids, gels, and aerosols, the general rule is that they must be in containers of no more than 100ml or 3.4 ounces. These containers must fit inside a single, clear, resealable plastic bag with a capacity of no more than 1 litre. Any liquids that exceed this limit should be packed in your checked luggage.
However, there are some exemptions to these rules. Baby food, milk, liquid formula, water, juice, and breast milk are all allowed in quantities exceeding 100ml. This applies if you are travelling with a child under the age of two, but also if you are flying without your child. These items are considered medically necessary liquids.
Additionally, gel and ice packs are allowed if they are being used to refrigerate baby food and milk. Breast milk cooling accessories, such as ice packs and freezer packs, are also permitted, regardless of the presence of breast milk.
It's important to note that even if an item is generally exempt from the liquid rules, it may still be subject to additional screening if it triggers an alarm during the screening process, appears to have been tampered with, or raises other security concerns.
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Duty-free liquids must be in a secure, tamper-evident bag
Liquids, gels, and aerosols are allowed through airport security in carry-on luggage only if they are in containers of 3.4 ounces (100 ml) or less. These containers must fit in a clear, resealable plastic bag with a capacity of no more than 1 liter. Any liquid, gel, or aerosol in a container larger than 3.4 ounces (100 ml) must be packed in checked baggage.
However, duty-free liquids are an exception to this rule. Passengers are allowed to carry duty-free liquids in containers larger than 3.4 ounces (100 ml) in their carry-on baggage, provided they are in a secure, tamper-evident bag. These bags are designed to prevent unauthorized access to restricted items and ensure compliance with security regulations. They are typically issued by duty-free shops at airports and international borders.
A secure, tamper-evident bag is a specially designed bag with a security seal that shows if the bag has been opened. It is a key feature of the duty-free shopping experience, ensuring that liquids purchased after security checkpoints remain secure. When passengers have a connecting flight, they must keep their secure, tamper-evident bag sealed. Breaking the seal may result in additional screening or confiscation of the liquids.
It is important to note that duty-free liquids in secure, tamper-evident bags must still be screened and cleared by security officers. Any item that alarms or cannot be properly screened will not be permitted in carry-on baggage, even if it is in a secure, tamper-evident bag. Therefore, it is recommended to pack all liquids, gels, and aerosols over 3.4 ounces (100 ml) in checked baggage, regardless of the bag type.
Additionally, the use of secure, tamper-evident bags for duty-free liquids is not accepted at all airports. For example, Japan does not use or accept these bags, so travelers with connecting flights in Japan should refrain from purchasing duty-free liquids in excess of 3.4 ounces (100 ml) before arriving in the country. It is always advisable to check the regulations of the specific airport and destination before purchasing duty-free liquids.
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Liquids include creams and pastes
Liquids, in this context, include creams, pastes, gels, aerosols, and non-solid foods. This means that items like toothpaste, hairspray, peanut butter, yoghurt, and even some foods like jam are considered liquids.
The rules for carrying liquids in hand luggage vary slightly depending on the country and airport. However, the general rule is that liquids must be in containers no larger than 100ml. This applies to each individual container, and all containers must fit into a single, clear, resealable plastic bag, which holds no more than a litre and measures approximately 20cm x 20cm.
Any liquids in containers larger than 100ml must be packed in checked baggage. There are some exemptions to this rule, including medication and baby food/drink for children under two years old, which can be carried in containers larger than 100ml.
Duty-free liquids can also be carried in hand luggage if they are sealed inside a security bag and have not been opened. This applies to duty-free liquids purchased internationally when travelling to the United States with a connecting flight.
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Frequently asked questions
The 3-1-1 rule for liquids, gels, and aerosols requires that all containers carrying these substances be 3.4 ounces (100 milliliters) or 100g (for Canada) or less. All liquids must fit into a single, resealable, clear, quart-sized bag.
Medically necessary liquids, aerosols, and gels are exempt from the 3-1-1 rule. This includes medication, breast milk, baby formula, gel or liquid-filled teethers, and canned or jarred baby food.
Any liquids, gels, and aerosols that are over 3.4 oz or 100 ml should be packed in your checked baggage.
Yes, you may carry duty-free liquids in secure, tamper-evident bags, more than 3.4 oz or 100 ml in your carry-on bag.
