
Airport security can be a confusing and stressful part of air travel. The Transportation Security Administration (TSA) has specific rules about what is and isn't allowed on flights, and these rules vary depending on your destination and point of departure. Knowing these rules can help expedite the security process. In general, only two pieces of hand luggage are allowed through security control, and they must be under a certain size. Liquids, gels, creams, and aerosols are restricted to containers of 100ml or less, with some exceptions for medicines and baby products. Electronic devices must be powered up and may need to be removed from bags for scanning. Other restricted items include powders, flammable substances, and hazardous materials.
| Characteristics | Values |
|---|---|
| Number of hand baggage items | 2 |
| Hand baggage dimensions | 56cm x 45cm x 25cm (22in x 18in x 10in) |
| Liquids container size | 100ml or less |
| Liquids container type | Plastic bag |
| Liquids purchased after security control | Allowed |
| Liquids purchased duty-free | Allowed if in a security tamper-evident bag |
| Powder quantity | 350ml or 350g |
| Electronic devices | Must be powered up |
| Lighters | Allowed with or without fuel |
| Tobacco | Allowed, but with customs limits |
| TSA PreCheck | Allows bypassing certain security steps |
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What You'll Learn

Liquids, including drinks, must be under 100ml
Liquids, gels, creams, and aerosols are allowed through airport security and in your carry-on bag, but only in small quantities. Containers must be 3.4 ounces (100ml) or less per item. These items must be placed in a small, separate, transparent, resealable plastic bag, which holds no more than a litre and measures approximately 20cm x 20cm. This bag should be removed from your carry-on baggage and screened separately.
Any liquid containers larger than 100ml must be packed in checked baggage. This includes drinks and other liquid products such as toothpaste. Even if a container is only partially full, it will not be allowed through security if the capacity is over 100ml. This rule also applies to duty-free liquids, which must be placed in checked baggage unless they were purchased internationally and you are travelling to the United States with a connecting flight. In this case, duty-free liquids can be carried onto the plane in a secure, tamper-evident bag.
It is important to note that the container itself must be 100ml or less. A larger container that is only partially filled with less than 100ml of liquid will not be allowed through security. This is because security officers do not have the time or equipment to measure the quantity of liquid in a container. Therefore, it is recommended to use travel-sized containers for liquids.
Some airports may have different rules regarding the amount of liquid allowed, with certain airports permitting containers that hold up to 2 litres of liquid. Additionally, there may be exemptions for certain liquids such as baby milk, food, medicines, and liquids for special dietary requirements. It is always best to check with the specific airport or airline for their guidelines and restrictions.
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Medication liquids are exempt from the above
When it comes to airport security, travellers are often unsure about what they can carry in their luggage. The Transportation Security Administration (TSA) in the United States has strict guidelines on what is allowed in carry-on and checked baggage. While liquids, gels, and aerosols are typically restricted to travel-sized containers of 3.4 ounces (100 millilitres) or less, medication liquids are exempt from this rule.
TSA regulations allow travellers to carry larger amounts of medically necessary liquids, gels, and aerosols in reasonable quantities. However, it is important to declare these items to TSA officers at the security checkpoint for inspection. Medication liquids that are required for your trip can be brought in containers larger than 3.4 ounces, but they must be properly declared and inspected. This exemption is in place to accommodate travellers who rely on specific medications, ensuring they have access to their necessary supplies during their journey.
It is important to note that medication liquids may be subject to additional screening, especially if they trigger an alarm during the initial screening process. TSA officers may need to inspect the liquids further to ensure they meet the necessary safety requirements. Medication liquids that appear to have been tampered with or pose security concerns may not be permitted through the checkpoint, even if they are medically necessary.
To facilitate a smooth screening process, travellers are advised to properly declare any medication liquids and provide clear information about their contents. Keeping the liquids in a separate bag from your other carry-on items can also help expedite the screening process. Additionally, travellers can consider enrolling in the TSA PreCheck program, which allows low-risk travellers to bypass certain steps during security checks, making the overall process faster and more convenient.
By understanding the TSA guidelines and properly preparing their medication liquids, travellers can ensure a hassle-free experience when passing through airport security. It is always advisable to check the latest TSA regulations and stay informed about any updates or changes to the allowed items list before embarking on your journey.
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Electronic devices must be charged and may need to be powered up
To ensure a smooth security screening process at the airport, it is important to prepare your electronic devices for inspection. This includes ensuring that all devices are charged and functional. While charging stations and portable chargers are available at most airports, it is advisable to arrive with fully charged devices to avoid any delays.
As part of the security screening process, Transportation Security Administration (TSA) officers may request that you power up your electronic devices, including smartphones, tablets, laptops, cameras, and e-readers. This measure is in place to verify that the devices are functional and do not pose a security threat. If a device cannot be powered on, it may not be permitted onboard the aircraft.
The requirement to power up electronic devices during security checks is particularly relevant for travellers with Apple or Samsung Galaxy devices and those flying to the United States from Africa, Europe, or the Middle East. These travellers can expect more stringent scrutiny of their electronic devices at security checkpoints.
To expedite the screening process, it is recommended to remove personal electronic devices larger than a cell phone from your carry-on bag and place them in a separate bin for X-ray screening. This includes devices such as laptops, tablets, and cameras. By following these guidelines, you can ensure a smoother security experience and avoid any inconvenience during your travel journey.
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Tobacco and lighters are allowed, but usage restrictions apply
Tobacco products are allowed to be carried through airport security, but usage restrictions apply. While tobacco products are generally permitted, they may be subject to additional screening and must not trigger any alarms during the screening process. If the product appears tampered with or poses security concerns, it may not be allowed.
Lighters, including disposable and Zippo lighters, are allowed in checked bags as long as they are without fuel. Lighters with fuel are prohibited in checked bags unless they adhere to the Department of Transportation exemption, which permits up to two fuelled lighters if they are properly enclosed in a DOT-approved case. If you are travelling to or from Japan, you are allowed to carry one lighter per person.
It is important to note that the final decision on whether an item is allowed through the checkpoint rests with the TSA officer. To ensure a smooth travel experience, it is advisable to plan ahead, pack properly, and be aware of any specific restrictions or guidelines provided by the airport, airline, and TSA regulations.
Additionally, restrictions on liquids, powders, and dangerous goods may impact what you can carry. For example, liquids are typically restricted to containers of 100ml or less, and powders and hazardous materials may be subject to further checks or prohibited altogether.
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Only two pieces of hand luggage are permitted
When travelling, it's important to be aware of the restrictions on what you can carry through airport security. Most airports have a limit on the number of hand luggage items you can take through security control. For example, Heathrow Airport operates a two-bag policy, meaning only two items of hand luggage are permitted through security. This includes handbags and laptop bags, which count as one piece of hand luggage each. To avoid any delays, make sure your hand luggage adheres to the size restrictions outlined by the airport. Anything larger than the specified dimensions must be checked in as hold luggage.
In addition to the number and size of your hand luggage, you should also be mindful of the items you pack. Liquids, creams, gels, pastes, and aerosols are typically restricted and must adhere to specific guidelines. As per the TSA's 3-1-1 liquids rule, liquids must be in containers no larger than 100ml or 3.4 ounces. These containers must then be placed inside a single, separate bag. This rule applies to various liquids, including drinks, suntan lotion, fragrances, cosmetics, and toiletries.
Some items are prohibited from being carried in hand luggage, such as harmful substances like gases, oxidisers, poisons, and corrosives. Flammable items like lighter fluid and non-safety matches are also restricted. If you need to carry liquid medication, you may be permitted to carry quantities exceeding the personal liquid allowance, provided it is essential during your flight. It is recommended to keep such medication in its original packaging, and you may be asked to provide proof of authenticity, such as a prescription.
Electronic devices are another area of consideration. Ensure your devices are charged before reaching the airport, as officers may request that you power them up during security checks. Additionally, consider investing in a travel backpack with a separate pocket for electronics, making it easier to access and scan these items during security.
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Frequently asked questions
Liquids are only allowed in containers holding 100ml or less. They must be carried separately in a clear bag. This includes drinks, suntan lotion, fragrances, cosmetics, toiletries, and frozen liquids.
Yes, you should assume that you will need to take out your electronics at the checkpoint. Officers may ask you to power up your devices, so make sure they are charged.
Yes, it is recommended to wear easy-to-remove shoes to speed up the security process.
Cigarettes, cigars, and tobacco are permitted without restriction. However, many countries have customs limits on the volume of tobacco you can bring in. For the US, it is 200 cigarettes or 100 cigars.
If any part of the screening process gets flagged, agents may ask you to step aside for further inspection. Even if an item is generally permitted, it may be subject to additional screening or not allowed through the checkpoint if it triggers an alarm or poses security concerns.




































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