
When travelling through airports, it's important to be aware of the restrictions on the types and sizes of bags you can carry. Most airports have strict security measures in place, and failure to comply with their guidelines can result in delays or even confiscation of your belongings. One of the most common requirements is the use of clear bags for carrying liquids, gels, and aerosols. But how big can these clear bags be?
| Characteristics | Values |
|---|---|
| Bag type | Clear, resealable plastic bag |
| Bag size | Quart-sized, 7 x 8 x 1 inches or 18 x 20 x 2.5 cm, no more than 20 cm x 20 cm |
| Bag volume | 1 litre |
| Container size | 3.4 ounces or 100 ml |
| Container type | Travel-sized |
| Number of bags allowed | 1 per person |
| Exemptions | Liquids for essential medical purposes with a prescription, baby food, duty-free liquids in secure, tamper-evident bags |
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What You'll Learn

Clear bags must be a maximum of 20cm x 20cm
For those travelling through Manchester Airport, any liquids, gels, and aerosols must be under 100ml and must be packed in a clear, resealable plastic bag no larger than 20cm x 20cm. This is to facilitate the screening process and ensure that security can clearly see the contents of the bag.
Passengers are limited to one of these clear bags of products in their hand luggage, and the bag must hold a maximum volume of one litre. It is important to ensure that the bag is not overstuffed and that its contents fit comfortably inside so that it can be easily sealed. This means that the bag is not so full that you cannot close it.
If you are travelling with medicines, baby food, or duty-free liquids, different rules may apply. Medicines are usually exempt from the plastic bag rule, as are baby foods, but check with your airline and airport before travelling to ensure you comply with their specific regulations.
For duty-free liquids, you can take volumes of more than 100ml in your carry-on bag if they were purchased at the airport and are sealed inside a security bag with the receipt visible. However, this may vary depending on the country you are travelling to or from, so always check before you fly.
It is also worth noting that some items are prohibited from being carried onto an aircraft, even if they are normally allowed in hand luggage. This includes certain electronic items over the size of A5 (20cm x 20cm), which should be placed in a separate tray to be screened individually.
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Only one clear bag of liquids per passenger
When travelling with hand luggage, it's important to remember that only one clear bag of liquids is permitted per passenger. This is a security measure that has been in place since 2006, when a terrorist plot involving liquid explosives was foiled. The rules for liquids apply to liquids, gels, creams, pastes, aerosols, and similar substances. This includes items such as toothpaste, hair gel, jam, marmite, and butter.
The permitted amount of liquids per container is 3.4 ounces (100ml), and all containers must fit into a single, clear, quart-sized bag. This bag should be separate from your carry-on baggage and easily accessible for screening. Any liquid that exceeds the permitted amount must be packed into your checked baggage. Some airports provide zip-lock bags for liquids pre-security, but it is recommended to prepare your liquids bag in advance.
There are some exemptions to the rules regarding liquids. Baby food and milk are allowed when travelling with a baby, and medical prescriptions in liquid form are also permitted with an accompanying prescription. Duty-free liquids purchased internationally may be carried in secure, tamper-evident bags, but must be screened and cleared. Medicines are also exempt from the clear bag rule.
To maximise space in your liquids bag, it is recommended to use solid alternatives, such as shampoo bars, sunscreen sticks, and solid perfumes. It is also important to remember that any liquid item that is not essential for your journey should be packed into your checked luggage. This includes full-size toiletries such as shampoo and face wash. By following these guidelines, you can ensure that you comply with the regulations and have a smooth travel experience.
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Liquids must be in containers of 100ml or less
When travelling with hand luggage, it is important to follow the rules regarding the size and contents of your bags. One of the most commonly known rules is that any liquids must be in containers with a capacity of 100ml or less. This rule applies to all gels, liquids and creams, including toothpaste, hair gel, and lip balm. It is worth noting that lip balm sticks and deodorant sticks are not considered liquids and are therefore exempt from this rule.
The restriction on liquid volume is in place for security reasons, and it applies to all passengers travelling through airports. It is important to remember that the 100ml limit refers to the capacity of the container itself, rather than the amount of liquid inside. Even if a container is only partially filled, it will not be permitted if its total capacity exceeds 100ml. This rule is consistently applied, and there is no room for discretion by security officers.
To comply with this regulation, it is recommended to purchase travel-sized containers specifically designed for carrying small volumes of liquids. These containers are readily available at pharmacies and stores such as Walmart and Dollar Tree. By using these containers, you can ensure that your liquids adhere to the 100ml limit. Additionally, it is important to keep these items separate from your other carry-on baggage to facilitate a smoother screening process at the airport.
While the 100ml restriction is strictly enforced, there are some exemptions. Medicines are generally exempt from the rule, and passengers are allowed to carry prescription liquids in any quantity. However, it is important to have a valid prescription or a recent letter from your doctor to present to the security officers. Similarly, baby food and milk are exempt, but only when travelling with an infant under the age of two. Duty-free liquids purchased internationally may also be allowed in larger quantities, provided they are securely packaged and do not show signs of tampering.
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Medicines are exempt from the clear bag rule
While there are strict rules regarding the size and contents of carry-on luggage at airports, medicines are exempt from the clear bag rule. This means that you can carry liquid medicines of more than 100ml in your hand luggage, even if they are not in a clear bag. However, you must have a valid prescription for the medicine, and the name on the prescription must match the name on your passport.
The rules for liquids carried in hand luggage can vary depending on the country and airport. In the UK, for example, the rule is that liquids carried in hand luggage must be in containers with a maximum capacity of 100ml and placed in a single, transparent, resealable bag. This bag must be taken out of your hand luggage and screened separately. The bag itself cannot be larger than 20cm by 20cm.
However, as mentioned, medicines are exempt from this rule. This means that you can carry liquid medicines of more than 100ml in your hand luggage without having to put them in a clear bag. It is important to note that the medicine must be accompanied by a valid prescription, and the name on the prescription must match your passport or other identification.
Additionally, medical equipment is screened separately from other hand luggage. Airport staff may need to open containers of liquid medicine to screen the contents, but this does not mean that the medicine needs to be placed in a clear bag. As long as you have a valid prescription and the medicine is screened successfully, you can carry it in your hand luggage without placing it in a clear bag.
It is always a good idea to check the specific rules and regulations of the airport and country you are travelling to or from, as these can vary. Some countries may have different rules regarding the screening of medicines, and it is important to be aware of any potential delays or additional screening processes that may be required.
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Liquids include gels, creams, pastes and sprays
Liquids, gels, creams, pastes, and sprays are subject to strict regulations at airport security. These items are typically defined as substances that can be spread, poured, or sprayed and include common products such as butter, jam, marmite, hair gel, shaving foam, hairspray, spray deodorants, toothpaste, and shower gel.
When travelling with these items, it is important to adhere to the regulations for carry-on baggage. Most airports restrict liquids to containers no larger than 100ml, and this rule applies even if the container is only partially full. These liquids must be placed in a separate, transparent, resealable plastic bag, which is approximately 20cm x 20cm in size and holds no more than a litre. All liquids must fit comfortably inside the bag so that it can be sealed.
It is recommended that any liquids, gels, or aerosols over 100ml or 3.4 ounces be packed in your checked baggage. This facilitates the screening process and helps to avoid delays. Some airports may allow containers holding up to 2 litres of liquid, but it is crucial to check the specific rules of the airport and airline before travelling.
There are exemptions for certain items, such as baby food and milk, medicines, and special dietary foods. These items may be allowed in larger quantities, but it is important to declare them and ensure they are easily accessible for inspection. Duty-free liquids purchased internationally may also be allowed in larger quantities if they are securely packaged and do not show signs of tampering.
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Frequently asked questions
The bag should be no larger than 20cm x 20cm and hold a maximum of one litre.
Any liquids over 100ml must be checked in with your hold luggage.
You can pick up a clear plastic bag at the airport, but it is recommended that you prepare your liquid bag before arriving to speed up the security process.
Yes, liquid containers larger than 100ml are allowed through security if they are for essential medical purposes and accompanied by a prescription or doctor's note. Baby food/milk is also exempt from the 100ml rule, but only if you are travelling with a baby.
Lipsticks, lip balms, and stick deodorants are not classed as liquids, so you don't need to include them in your clear plastic bag.











































