Owais Crawford
Liquids purchased at duty-free airport retailers or on board an aircraft are allowed through customs, provided they are sealed inside a security bag with the receipt sealed inside and visible. This exemption to liquid volume rules was developed in 2008 by the International Civil Aviation Organization. However, there are differing accounts of how long these items can remain sealed for—one source suggests 24-48 hours, while another mentions that there is no mention of a time limit in the UK and EU. It is important to note that the final decision on whether an item is allowed through the checkpoint rests with the TSA officer.
| Characteristics | Values |
|---|---|
| Can you bring water through customs? | Yes, but only if it is sealed and bought at the airport. |
| How much water can you bring? | 3.4 ounces (100ml) of water per container. |
| How many containers? | One bag per passenger. |
| Any other exceptions? | Water for babies is allowed in "reasonable quantities". |
| What about duty-free liquids? | Allowed if sealed inside a security bag with the receipt inside. |
| How long is duty-free valid? | Within 24-48 hours of purchase. |
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What You'll Learn
Liquids bought at an airport or on a plane
In general, liquids purchased at duty-free airport retailers or on board an aircraft are allowed as long as they are sealed inside a security bag and the receipt for the items is also sealed inside and remains visible. This security bag must not be opened until the final destination is reached. However, airport staff may need to open the bag and bottles for screening. These rules were developed in 2008 by the International Civil Aviation Organization to allow an exemption to liquid volume rules for duty-free purchases.
For US travellers, this exemption is limited to inbound international flights, according to the TSA. It is important to note that the final decision on whether an item is allowed through the checkpoint rests with the TSA officer.
Some exceptions to the liquid rules include baby food and drinks, including water, puree pouches, and breast milk, which are allowed in "reasonable quantities". Live coral in water is also allowed, as well as certain portable electronic devices with non-spillable batteries.
It is worth noting that the standard 3-1-1" rule for liquids still applies to most travellers. This means passengers can carry 3.4 ounces (100 ml) of liquid per container, and these containers must fit into a single, clear, quart-sized bag, with only one bag per passenger.
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TSA's 3-1-1 rule
The Transportation Security Administration (TSA) has a "3-1-1 rule" for liquids, gels, and aerosols in carry-on luggage. This rule states that travellers can carry containers of liquids, gels, and aerosols that are 3.4 ounces (100ml) or less, in one 1-quart-sized bag, with a limit of one bag per passenger. This means that travellers can bring a variety of small containers that fit into a single one-quart bag.
The 3-1-1 rule is important to remember when packing liquids, gels, and aerosols in carry-on luggage. It is applicable to items such as shampoo, lotion, sunscreen, toothpaste, and hair gel. Even liquid makeup that is in a liquid or gel form falls under this rule. It is important to note that this rule also applies to items purchased at the airport, as they need to be placed in checked luggage if they exceed the allowed amount.
Additionally, the 3-1-1 rule also applies to certain "medical" liquids, such as epinephrine auto-injectors (EpiPens), eye drops, and inhalers. These items must also adhere to the specified container size and quantity limitations. If travellers need to carry a larger quantity of liquids, they may need to consider checking their bags instead of carrying them onto the plane.
It is important to be aware of the 3-1-1 rule and plan accordingly when packing for air travel. Travellers should ensure that their liquids, gels, and aerosols are in containers that meet the size requirements and that they are placed in a clear, quart-sized bag for easy inspection. By following these guidelines, travellers can help ensure a smoother airport security screening process and avoid having to discard any prohibited items.
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Exemptions for liquids in the name of science
Liquids in the form of non-infectious specimens in preservative solutions, such as formaldehyde, ethanol, isopropanol, or other alcohols, are allowed on flights for scientific research purposes. However, these liquids must be packaged according to specific instructions. The inner plastic bag must be heat-sealed and contain no more than 30 milliliters of free liquid. The outer packaging must be labelled "Scientific research specimens, 49 CFR 173.4b applies" and contain no more than one liter.
In addition to the above exemption, travellers are generally allowed to carry liquids in their carry-on baggage provided they adhere to the 3-1-1 rule. This rule states that liquids must be in containers no larger than 3.4 ounces (100 ml) and must be placed in a single clear quart-sized bag. Liquids that exceed this limit must be packed in checked luggage.
It is important to note that duty-free liquids purchased on international flights to the United States are exempt from the 3-1-1 rule. These liquids must be packed in secure, tamper-evident bags and should not show signs of tampering when presented for TSA screening.
Furthermore, medications, baby formula, breast milk, and juice for infants and small children are also exempt from the 3-1-1 rule. However, these items must be declared before screening and may be subject to additional screening procedures.
Lastly, travellers should be aware that restrictions on liquids may be lifted in the coming years as airports adopt advanced scanners that can detect hazardous liquids.
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Liquids for babies
It is helpful to the TSA officers if these liquids are in clear, translucent bottles, rather than plastic bags or pouches, as these can be easily screened using Bottle Liquid Scanners. If the liquids are in plastic bags or pouches, they may need to be opened for alternate screening methods such as Explosive Trace Detection and Vapor Analysis. Screening will never include placing anything into the medically necessary liquid.
In addition to formula, breast milk, and baby food, other items such as ice packs, freezer packs, gel packs, and liquid-filled teethers are also allowed in carry-ons, regardless of the presence of breast milk. These items will be subject to the same screening procedures as mentioned above if they are partially frozen or slushy.
While there is no legal limit to how much baby food, baby milk, or sterilised water you can carry, it is recommended to bring a reasonable amount for your flight itinerary. It is always a good idea to check with your airport before travelling to understand their specific rules and guidelines.
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Non-liquid foods
Bringing food items through customs depends on the type of food and the country you are travelling to or from. For example, the United States prohibits or restricts the entry of meats, fresh fruits and vegetables, plants, seeds, soil, and products made from animal or plant materials. This is to prevent the introduction of pests and diseases to American agriculture.
Bakery items and certain types of cheese are allowed into the US. Many prepared foods are also admissible, but meat products such as bouillon and soup mixes are not. If you are bringing food items into the US, they must be declared and are subject to inspection by a CBP Agriculture Specialist. Failure to declare prohibited items can result in civil penalties.
In general, food items that are not liquid are more likely to be allowed through customs, but this is not always the case. For example, if a non-liquid food item triggers an alarm during the screening process, appears to have been tampered with, or poses other security concerns, it may not be allowed through the checkpoint.
It is important to research the specific regulations of the country you are travelling to or from, as different countries have different restrictions on bringing food items through customs.
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Frequently asked questions
Yes, you can bring liquids purchased at the airport or on a plane through security as long as they are sealed inside a security bag and the receipt for the items is inside the bag and visible.
No, liquids purchased at the airport do not need to be declared when going through customs. However, you must carry the receipt for the purchase with you on all legs of your flight, and the items must have been purchased within the last 48 hours.
Yes, there are a few exceptions to this rule. Water for babies is allowed in "reasonable quantities" and does not need to be in a sealed bag. Additionally, gel ice and freezer packs are permitted as long as they are frozen solid.
Yes, certain liquids are exempt from the usual rules for scientific research or medical purposes. For example, non-infectious specimens in preservative solution can be carried through security if they are for scientific research and are properly packed. Medically necessary liquids are also allowed.
