
Travelling by plane often involves going through airport security, which can be a confusing and stressful experience for many. To ensure a smooth journey, it is important to be aware of the restrictions on what can be carried in hand luggage and checked baggage. While the specific rules may vary depending on the country and airline, there are some general guidelines to follow. For example, restrictions are often placed on liquids, with most airports limiting the volume to containers of 100ml or less. Additionally, electronic devices and medical equipment may be subject to special instructions, and dangerous items are typically prohibited. Understanding and adhering to these regulations will help facilitate the screening process and enhance your overall travel experience.
What to take through airport security
| Characteristics | Values |
|---|---|
| Liquids | Liquids in containers larger than 100ml are generally not allowed through security. Some airports may allow containers of up to 100ml. Check with the airport before travelling. Liquids bought at an airport or on a plane can be taken through security if they are sealed inside a security bag with the receipt visible. |
| Electronic devices | You can bring some electronic items in your hand luggage. Smaller items like mobile phones and iPods can be left in your bag, while larger items over the size of A5 should be placed in a tray to be screened separately. |
| Medical equipment | You can take medical equipment if it is essential for your journey. It will be screened separately, and you must show documentation from a qualified medical professional. |
| Lighters | You can only carry one lighter on board, which must be placed inside a resealable plastic bag and kept with you throughout the flight. |
| Food and powders | Food and powders can obstruct x-ray images. These items should be placed in hold luggage to minimise delays. |
| Frozen items | Frozen items, including liquid, food, or ice packs, are generally not allowed in hand luggage. |
| Dangerous items | Airport security staff will not allow any items they consider dangerous, even if they are typically permitted in hand luggage. |
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What You'll Learn

Liquids: Containers under 100ml
Liquids are subject to strict restrictions when passing through airport security. Containers of liquids that you plan to take in your hand luggage must be smaller than 100ml. This rule applies to the container itself, not just the amount of liquid inside. For example, a 150ml bottle that is only a quarter full is not allowed through security.
The 100ml rule applies to drinks and other consumables, as well as cosmetics, sprays, pastes, and gels. This includes items such as toothpaste, hair gel, and sun cream. However, lipsticks, lip balms, and stick deodorants are not classed as liquids and are therefore exempt from the 100ml rule.
Liquids that are purchased at the airport or on duty-free after the security check can be taken on board, even if they exceed 100ml. These items must be sealed inside a security bag with the receipt visible. Do not open the security bag until you reach your final destination, as airport staff may need to open the items to screen the liquid at the security point.
Some airports in the UK and EU have relaxed the 100ml rule, allowing passengers to carry up to two litres of liquid in their hand luggage. However, many airports still enforce the 100ml rule, so it is important to check the rules of the specific airport and any connecting airports before travelling.
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Medication: Must be essential, with a prescription
Medication is allowed at the airport, but it must be essential and accompanied by a prescription or a medical certificate from your healthcare provider. The prescription should include the generic names for medicines, and it is recommended to bring copies of all written prescriptions. You can also include a letter from your healthcare provider describing your condition and treatment plan, especially if your medication is not allowed at your destination. It is also helpful to check the International Narcotics Control Board website for information on narcotics and controlled substances in the countries you are travelling to.
Medication can be carried in both carry-on and checked baggage, but it is highly recommended to place them in your carry-on luggage in case of immediate access needs or lost checked baggage. If your medication includes needles or other sensitive equipment, inform the officers at the checkpoint about your medical device and any other equipment prior to screening. If you have a medical device attached to your body, such as an insulin pump or glucose monitor, inform the officers of its location before the screening process begins.
Medication in solid form, such as pills, can be brought in unlimited amounts as long as it is screened. Medication in liquid form is typically allowed in carry-on bags in reasonable quantities for the flight, usually more than 3.4 ounces or 100ml. However, you must declare medically required liquids at the start of the screening process, and they will be subject to additional screening, which may include opening the container. To avoid delays, it is best to check the rules for liquids with your airline and the relevant airports before travelling, as these may vary depending on the country.
It is important to note that medication will usually be screened by X-ray, but you can request a visual inspection instead if preferred. This request must be made before sending any items through the X-ray tunnel. Additionally, extreme temperatures can reduce the effectiveness of many medicines, so it is essential to consider how to safely store your medication while travelling and whether refrigeration is needed.
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Electronics: Small items stay in bags, large items are screened separately
When it comes to electronics, it's important to know what you can bring and how to pack it to ensure a smooth airport security experience. Small electronic items, such as cell phones, can usually stay in your carry-on bag and don't require separate screening. However, larger personal electronic devices, such as laptops and tablets, need to be handled a little differently.
For larger electronics, you will typically need to remove them from your carry-on bag and place them in a bin for X-ray screening. Make sure you don't place anything on or under them in the bin. This separate screening process helps ensure the security of your devices and allows for a clear and unobstructed view during the screening. It's important to note that even if an item is generally permitted, it may be subject to additional screening or not allowed through if it triggers security concerns.
Some countries, like the United States, may have more extensive screening processes for personal electronic devices. This may include asking you to power up your devices to ensure they are functional. These measures are in place to ensure the safety and security of all passengers and are adapted based on evolving threats. It's always a good idea to check with the relevant country's guidelines before your travel to understand any specific requirements.
Additionally, certain countries may have different rules regarding the transportation of electronic devices. For example, there are specific considerations for electronic devices carried from Turkey, Lebanon, Egypt, and Saudi Arabia. These regulations are subject to change, so it's essential to stay informed and prepared. Remember, proper planning and packing can significantly facilitate your security screening process and enhance your overall travel experience.
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Lighters: One per person, in a clear plastic bag
If you're planning on taking a lighter through airport security, it's important to follow the regulations to avoid any delays or issues. Here's what you need to know:
Firstly, you are allowed to carry one lighter when passing through airport security. This rule generally applies to commercial flights and most airports. It's worth noting that some sources suggest confirming this allowance with your specific airline. Additionally, only lighters that use flammable gas (butane) or flammable liquids absorbed in a lining (Zippo-type lighters) are permitted.
Secondly, make sure your lighter is placed in a clear, resealable plastic bag, similar to the ones used for liquids. This bag must be easily accessible and kept with you at all times during the flight. It is recommended to put the lighter in a place that is easily retrievable, such as a pocket, rather than at the bottom of your carry-on bag. When going through security screening, you may be asked to place the lighter in one of the provided bins for inspection.
It's important to ensure that your lighter is either empty or contains no traces of fuel or vapour. If you need to bring a lighter with you, consider carrying it in your hand luggage or on your person, rather than in your checked baggage. This way, you can avoid potential issues with lighters leaking or getting damaged in checked bags.
It is worth noting that some types of lighters are prohibited. Arc lighters, plasma lighters, electronic lighters, and eLighters are not allowed in checked baggage. Torch lighters are also prohibited in both carry-on and checked luggage.
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Food: Allowed, but may obstruct X-ray images
Food is generally allowed through airport security, but it may obstruct X-ray images. This means that your bag may need to be checked again manually by security. To minimise delays, you can put food items in your hold luggage.
X-ray machines are used to screen carry-on items and checked luggage. They are used to detect items that may be hidden and to create images of what is in your luggage. These machines use very low amounts of radiation to ensure the safety of everyone involved. The amount of radiation received from a backscatter machine is equal to the amount of cosmic radiation received during two minutes of flight, and the risk of health effects is extremely low.
Food items are allowed through the X-ray machines when going through security. However, you may be asked to separate food items from your carry-on bag, as they can clutter the bag and obstruct clear images on the X-ray machine. Keeping your bag organised will help to ease the screening process.
Food that has been passed through an X-ray machine is safe to consume. According to the FDA, food passed through X-ray systems used for security scanning should not cause harm or adverse effects. The average radiation dose an object scanned by such a system would receive is around 1 millirad, while the background radiation is about 360 millirem per year. Food preservation or parasite destruction requires a much higher dose of 30,000 rad.
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Frequently asked questions
Liquids in containers larger than 100ml generally cannot go through security. However, there are some exemptions. For example, some airports may allow containers of liquid up to 100ml through security in your hand luggage. Liquids for essential medical purposes are also allowed but must be accompanied by a medical note or prescription.
Food items and powders in hand luggage can obstruct images on X-ray machines. It is recommended to pack these items in your hold luggage to minimise delays.
You can take medication on board, but it must be in its original packaging, correctly labelled, and matching your prescription. If your medication is a liquid over 100ml or a sharp, like a syringe or EpiPen, you will need the necessary documents when going through security.
Smaller electronic devices, such as mobile phones and iPods, can be left in your hand luggage bag. Larger items, such as tablets, laptops, hair appliances, and cameras, must be placed in a separate tray to be screened individually.
You can carry one lighter on board, but it must be inside a resealable plastic bag, which you must keep on you throughout the flight. Lighters are not allowed in hold luggage.











































