
When travelling with hand luggage, it is important to be aware of the restrictions in place regarding plastic bags. Most airports require passengers to store liquids in a clear, resealable plastic bag. These bags are typically available for purchase at the airport, but they can also be bought beforehand at a lower price. The bag must be sealed and cannot exceed a certain volume, with the standard size being 20cm by 20cm and holding no more than a litre. Each passenger is limited to one plastic bag, and it must be presented at the airport security point. This bag is necessary to carry liquids such as toiletries, perfumes, and medicines, which are allowed on board only in small quantities. Some exceptions are made for baby food and medical equipment, but it is always best to check with the airport and airline before travelling.
| Characteristics | Values |
|---|---|
| Plastic bag requirement at airports | Necessary for carrying liquids in hand luggage |
| Bag type | Clear, resealable plastic bag |
| Bag size | No larger than 20x20cm, holds up to 1 litre |
| Number of bags allowed | 1 bag per person |
| Liquid container size | Containers must be 100ml or less |
| Exemptions | Baby food/milk, medicines, special dietary requirements |
| Buying plastic bags at the airport | Available at some airports, but may be cheaper to buy in advance |
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What You'll Learn
- Plastic bags for liquids at the airport must be transparent, resealable, and no more than 20cm x 20cm
- Each passenger is limited to one plastic bag for liquids, which must be sealed and shown at security
- Exemptions to the liquid rule include essential medicines, baby food, and dietary requirements
- Liquids bought at the airport or on the plane can be taken through security if sealed with a receipt
- Electrical items larger than A5 must be removed from hand luggage and screened separately

Plastic bags for liquids at the airport must be transparent, resealable, and no more than 20cm x 20cm
If you're packing liquids in your hand luggage, they must be in containers that hold no more than 100ml each. These containers must be placed in a clear, resealable plastic bag, which holds no more than a litre and measures approximately 20cm by 20cm. This bag must be sealed and not tied in a knot at the top.
You can use any type of clear, resealable plastic bag, such as a makeup bag or a freezer bag. If you forget to bring one, you can usually purchase a clear plastic bag at the airport. However, it's recommended that you prepare your liquid bag before arriving at the airport to speed up the security process.
It's important to note that some items, such as lipsticks, lip balms, and stick deodorants, are not considered liquids and do not need to be placed in the plastic bag. Additionally, you can take liquid containers larger than 100ml for essential medical purposes, special dietary requirements, or baby food and milk. These must be accompanied by a doctor's note or prescription.
Different airports may have slightly varying rules regarding liquids, so it's always a good idea to check with the specific airport and airline before travelling.
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Each passenger is limited to one plastic bag for liquids, which must be sealed and shown at security
The restriction on liquids in hand luggage is a safety measure, and it is important to follow the rules to avoid unnecessary delays. Liquids, gels, and aerosols must be under 100ml each and fit comfortably inside the plastic bag. This includes all liquids, from water to hair gel.
Some exemptions to the liquid rule include liquids for essential medical purposes, special dietary requirements, or baby food and milk. These liquids must be accompanied by relevant documentation, such as a prescription or doctor's note. Liquids purchased at the airport or on the plane, such as duty-free perfume, are also allowed as long as they are sealed inside a security bag with the receipt visible.
It is recommended to prepare the liquid bag before arriving at the airport to speed up the security process. If you forget to bring a plastic bag, you can usually pick one up at the airport, but this may be limited to one per customer. Alternatively, you can purchase ziplock bags beforehand at a lower cost than those sold at the airport.
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Exemptions to the liquid rule include essential medicines, baby food, and dietary requirements
While the 3-1-1 Liquids Rule is a general guideline, there are certain exemptions that travellers should be aware of. These include essential medicines, baby food, and dietary requirements.
Liquid medications and dietary supplements are allowed in carry-on baggage in any quantity necessary for the flight, including during layovers. These items may exceed the 3.4-ounce (100ml) limit and do not need to be in a clear plastic bag. However, it is recommended to keep these items in their original packaging and have a copy of your prescription or a doctor's note, especially for controlled substances.
Baby food, formula, breast milk, and juice for infants or toddlers are also exempt from the Liquids Rule and are not restricted to the standard limit. They do not need to be in a clear plastic bag. Water for babies is also allowed in "reasonable quantities" and should be removed and screened separately from other belongings.
Additionally, duty-free liquids purchased after passing through security, such as alcohol or perfume, are exempt from liquid carry-on restrictions. However, they must be carried in their original sealed packaging along with the receipt.
It is important to note that these exemptions may vary depending on the country and airport, so it is always a good idea to check with the relevant airport and airline before travelling.
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Liquids bought at the airport or on the plane can be taken through security if sealed with a receipt
While plastic bags are available at the airport, it is recommended that you bring your own to save time at security. You can use any type of clear, resealable plastic bag, such as a makeup bag or a freezer bag.
Liquids bought at the airport or on the plane can be taken through security if they are sealed with a receipt. This includes duty-free items such as perfume. The items must be sealed inside a security bag at the time of purchase, with the receipt for the items sealed inside and visible. This rule applies to liquids, gels, and aerosols, and the bag must be clear and resealable, no larger than 20cm x 20cm.
Passengers are allowed to bring a quart-sized bag of liquids, gels, aerosols, creams, and pastes in their carry-on luggage. These items must be in travel-sized containers of no more than 3.4 ounces (100 millilitres) each. Any liquid, gel, or aerosol that is over 100ml must be packed in checked baggage.
Some airports may have different rules, so it is always best to check with the specific airport before travelling. For example, some airports may allow containers of up to 2 litres of liquid. Additionally, there may be exemptions for baby milk or food, medicines, or food for special dietary requirements.
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Electrical items larger than A5 must be removed from hand luggage and screened separately
When travelling by air, it is important to be aware of the restrictions on what you can carry in your hand luggage. While you can pack liquids in your hand luggage, there are specific rules regarding how to do so. All liquids, gels and aerosols must be under 100ml and must be packed in a clear, resealable plastic bag, no larger than 20cm by 20cm. Each passenger is limited to one such bag, which must be presented at the airport security point.
In addition to liquid restrictions, there are also rules regarding electrical items in hand luggage. Smaller items, such as mobile phones and iPods, can be left in your bag. However, electrical items larger than A5 (20cm by 20cm) must be removed from your hand luggage and placed in a separate tray to be screened. This includes items such as tablets, iPads, laptops, hair appliances, e-cigarettes, cameras, docking stations, chargers, speakers, electric shavers and irons.
It is important to note that the rules regarding electrical items in hand luggage may vary depending on the country and airport. Therefore, it is always advisable to check with the relevant airline and airport before travelling. Additionally, any electrical item that is considered dangerous will not be allowed through security, even if it is normally permitted.
To ensure a smooth journey through airport security, it is recommended to prepare your liquid bag before arriving at the airport. This can help to speed up the process and reduce delays. It is also important to make sure that all electronic devices are charged before travelling, as any device that cannot be switched on when requested will not be allowed on the aircraft.
By following these guidelines and staying informed about the specific rules and regulations of your departure and arrival airports, you can ensure a hassle-free travel experience.
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Frequently asked questions
Yes, you can buy plastic bags at the airport. However, it may be cheaper to bring your own as some airports charge £1 per bag.
You need a clear, resealable plastic bag, no larger than 20cm x 20cm.
You can put liquids, gels, and aerosols in your plastic bag. Each container must be no larger than 100ml.











































