Jazmin Li
The rules around bringing water through airport security vary depending on the country and the airport. In the US, the Transportation Security Administration (TSA) operates a 3-1-1 Liquid Rule, which means travellers are not allowed to bring a water bottle filled with water through security in carry-on luggage. However, passengers are allowed to bring empty water bottles, which can be filled up once they have passed through security. An exception to this rule is freezing the water before passing through security. Frozen liquid items are allowed through the checkpoint as long as they are frozen solid when presented for screening. If the water is partially melted, slushy, or has any liquid at the bottom of the container, it must meet the 3-1-1 liquids requirements. These requirements state that liquids, gels, and aerosols must be in containers of 3.4 ounces (100ml) or less. In Canada, the Air Transport Security Authority (CATSA) operates similar restrictions, with frozen liquids, such as ice, permitted in quantities of 100ml (3.4oz) or less. In the UK, travellers are not allowed to bring water through security, although some airports are introducing more advanced scanners that may change this rule.
Is water allowed through airport security?
| Characteristics | Values |
|---|---|
| Empty water bottles | Allowed |
| Water bottles filled with water | Not allowed |
| Ice | Allowed |
| Medically necessary liquids | Allowed, but must be declared to officers at the security checkpoint for inspection |
| Duty-free liquids | Allowed, if purchased internationally and you are traveling to the US with a connecting flight |
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What You'll Learn
Water bottles can be brought through security if they are empty
It is important to understand the rules and regulations regarding what you can and cannot bring through airport security to ensure a smooth and hassle-free experience. The rules around water bottles can be particularly confusing.
The Transportation Security Administration (TSA) in the United States has a 3-1-1 Liquid Rule, which states that liquids, gels, and aerosols in carry-on luggage must be in containers of 3.4 ounces (100 ml) or smaller. These containers must be placed in a one-quart-sized, clear, plastic, zip-top bag, and each passenger is limited to one bag. This rule also applies to beverages, including water, meaning you cannot bring a filled water bottle through TSA security in your carry-on bag.
However, you are allowed to bring an empty water bottle with you. This means you can stay hydrated during your flight without contributing to the use of single-use plastics. Simply fill up your empty bottle once you have passed through security.
It is worth noting that some travelers have suggested freezing water in their bottle as a workaround since frozen liquids are allowed through security as long as they are frozen solid. However, this method can be risky as the ice may melt before you go through security, and you will then have to discard the water. Additionally, some airports have advanced scanners that can detect liquids inside bottles, even if they are frozen. Therefore, bringing an empty water bottle and filling it up after security is a more reliable option.
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Frozen water bottles are allowed if they are frozen solid
While water bottles are not allowed through airport security, a clever "travel hack" suggests freezing them before reaching the airport and taking them through security. This method has gained popularity through TikTok, with several people confirming its effectiveness.
According to the Transportation Security Administration (TSA), frozen liquid items are allowed through the checkpoint as long as they are frozen solid. If the frozen liquid items are partially melted, slushy, or have any liquid at the bottom of the container, they must meet the standard liquids requirements. This means that each item must be smaller than 3.4 ounces or 100 milliliters and fit inside a quart-sized bag.
It is important to note that this hack may not be worth the effort, as most airports have water fountains where you can fill up your water bottle for free after passing through security. Additionally, keeping water frozen throughout the journey to the airport and while waiting in line may be challenging.
However, if you decide to try this method, it is essential to ensure that your frozen water bottle is completely solid before reaching the checkpoint. This way, you can avoid any issues and make the most of this travel hack.
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Liquids, gels, and aerosols must be under 3.4 ounces or 100ml
Liquids, gels, and aerosols are permitted through airport security as long as they are in containers that are 3.4 ounces (100ml) or less in size. This rule, known as the 3-1-1 liquids rule, applies to beverages, including water. It means that you are not allowed to bring a water bottle filled with water through security in your carry-on bag. However, you are allowed to bring an empty water bottle, which can be filled once you have passed through security. This helps you stay hydrated during your flight and reduces the use of single-use plastics.
The 3-1-1 liquids rule allows each passenger to bring liquids, gels, and aerosols in containers smaller than 3.4 ounces or 100ml. These must all fit into a single, quart-sized, clear, plastic, zip-top bag, and only one such bag is permitted per passenger. Any liquid, gel, or aerosol that is over 3.4 ounces or 100ml should be packed in your checked baggage.
It is worth noting that some airports outside the US and TSA-regulated areas may have different rules. For example, in the UK, liquids are permitted within a 100ml container inside a 1-liter resealable transparent bag. However, as airports introduce more advanced scanners, even these rules are changing, and some airports may confiscate water bottles purchased outside the gate, as in the case of an airport in Chile.
To navigate these rules, some travellers have resorted to bringing ice or freezing water before passing through security. While this is permitted by the TSA, it is important to note that the ice or frozen liquid must be completely solid when presented for screening. If there is any liquid present, it must comply with the 3-1-1 liquids rule. Additionally, some travellers have expressed concerns about the practicality of keeping water frozen until reaching the security checkpoint.
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Medically necessary liquids are allowed in larger amounts
While the general rule is that liquids, gels, and aerosols must be in containers of 3.4 ounces (100ml) or less and fit in a quart-sized bag, the TSA does allow larger amounts of medically necessary liquids, gels, and aerosols. These are typically allowed in reasonable quantities for your trip, but they must be declared to security officers first. Passengers are advised to inform the TSA officer that they have medically necessary liquids and/or medications before the screening begins.
The TSA defines medically necessary liquids to include breast milk, baby formula, and liquid-filled teethers for babies and toddlers. Water for babies is also allowed in reasonable quantities. Additionally, liquid medications that are not prescriptions and contact lens solutions are limited to 3.4 ounces, but larger amounts may be allowed with prior declaration.
IV bags, pumps, syringes, and other accessories to medical supplies are also permitted. These items must be screened before they are allowed into the secure area of the airport. TSA officers may test these liquids for explosives or prohibited items, and additional screening may be required if the alarm cannot be resolved. Passengers can request alternative screening methods, such as Vapor Analysis, if they do not want their medically necessary liquids screened by X-ray or opened.
It is important to note that the final decision on whether an item is allowed through the checkpoint rests with the TSA officer. Passengers should plan ahead and properly pack their medically necessary liquids to facilitate the screening process and ease their travel experience.
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Ice is allowed through security and can be added to water
While you cannot bring water through airport security, ice is allowed and can be added to water. Frozen liquid items are permitted as long as they are frozen solid when presented for screening. If the ice has partially melted and there is liquid at the bottom of the container, it must adhere to the 3-1-1 liquids requirement. This means travellers are limited to containers that are 3.4 ounces (100ml) or less per item.
However, it is important to note that even if an item is generally permitted, it may be subject to additional screening or prohibited from passing through security if it triggers an alarm, appears tampered with, or raises other security concerns. The final decision rests with the TSA officer.
To ensure ice remains frozen for as long as possible, it is recommended to use an insulated water bottle. Even so, it may start melting before you go through security, so it is a good idea to also carry an empty 100ml bottle to pour the melted water into before screening.
It is always advisable to check with your specific airport to see if there are any restrictions or limitations in place.
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Frequently asked questions
No, you cannot bring a water bottle filled with water through security in your carry-on bag. However, you are allowed to pack an empty reusable water bottle, which can be filled up once you pass through security.
Yes, the TSA allows larger amounts of medically necessary liquids, gels, and aerosols in carry-on luggage. These need to be declared to officers at the security checkpoint for inspection.
Yes, according to the TSA, frozen liquid items are allowed through the checkpoint as long as they are frozen solid when presented for screening. If the frozen liquid items are partially melted, they must meet the 3-1-1 liquids requirements.
