
Frozen liquids are allowed through airport security as long as they are completely frozen. According to the TSA, if frozen liquid items are partially melted, slushy, or have any liquid at the bottom of the container, they must meet the standard 3-1-1 liquids requirements. This rule states that travellers can bring one quart-sized bag of liquids, gels, aerosols, creams, and pastes in their carry-on bag and through the checkpoint, with each item inside the bag smaller than 3.4 ounces or 100 millilitres. While some travellers suggest freezing liquids as a “travel hack” to carry larger liquids onto a plane, it may be more effort than it's worth, especially considering most airports have water fountains to fill up bottles for free.
| Characteristics | Values |
|---|---|
| Frozen liquids allowed through security | Yes, as long as they are completely frozen |
| Partially melted frozen liquids | Must meet the standard liquids requirements |
| Containers | Should be clear/see-through |
| Exceptions | Breast milk, formula, toddler drinks and baby/toddler food |
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What You'll Learn
- Frozen liquids are allowed through security as long as they are completely frozen
- Partially melted, slushy, or liquids at the bottom of the container must meet the standard liquids requirements
- The liquids must follow the 3-1-1 rule for liquids in carry-on baggage
- Liquids larger than 3.4 ounces or 100ml must be packed in checked baggage
- An exception to the rule is breast milk, which is allowed in carry-on baggage in quantities greater than 3.4 ounces

Frozen liquids are allowed through security as long as they are completely frozen
It is important to note that this rule applies specifically to frozen liquids and that other restrictions may apply to frozen items that are not liquids. For example, dry ice is allowed through TSA security, but it must be in a clear, tightly sealed container. Additionally, some liquids that you may want to bring through security, like shampoo and toothpaste, cannot be frozen, so this hack won't work for those items.
While frozen liquids are generally allowed through security, there may be some variation in how individual TSA agents interpret the rules. Therefore, it is always a good idea to check with the specific airport or security agency you will be dealing with to ensure that you are following the correct procedures. Additionally, it is important to consider the practicalities of travelling with frozen liquids. For example, keeping water frozen for the duration of your journey to the airport, the wait in line, and through security may be challenging.
Overall, while it is technically allowed to bring frozen liquids through airport security, there are some considerations and potential challenges to keep in mind. It may be more practical to bring an empty reusable water bottle and fill it up at a water fountain or another source after passing through security.
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Partially melted, slushy, or liquids at the bottom of the container must meet the standard liquids requirements
Frozen liquids are allowed through security as long as they are completely frozen. However, if your frozen water is partially melted, slushy, or has any liquid at the bottom of the container, it must meet the standard liquids requirements. This means that it must adhere to the 3-1-1 rule: one quart-sized bag of liquids, gels, aerosols, creams, and pastes in your carry-on bag and through the checkpoint, with each item inside the bag smaller than 3.4 ounces or 100 milliliters.
It is important to note that keeping water frozen until you reach the checkpoint can be challenging. It may start melting during the ride to the airport, while waiting in line, or even during the walk to TSA. Therefore, it is recommended to bring an empty 100 ml bottle and pour the melted water into it before screening. Most airports have water fountains where you can fill up your water bottle for free after passing through security.
Additionally, it is worth mentioning that the interpretation of TSA rules can vary among agents. While frozen liquids are generally allowed, some TSA agents may interpret the regulations differently, so it is beneficial to be prepared and understand the rules thoroughly. To avoid any potential issues, it is advisable to bring an empty water bottle and fill it up after passing through security.
Furthermore, it is suggested to use a clear or transparent container for your frozen water. This will make it easier for TSA officers to identify the contents and reduce the likelihood of additional screening, as they will be able to clearly see that it is indeed ice or frozen water.
In conclusion, while it is technically permissible to bring frozen water through airport security, it is essential to ensure that it remains completely frozen until the time of screening. If any portion of it has melted or turned slushy, it must comply with the standard liquids requirements. To avoid any inconvenience, it is often more practical to bring an empty water bottle and take advantage of the water fountains available in most airports after passing through security.
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The liquids must follow the 3-1-1 rule for liquids in carry-on baggage
Frozen liquids are allowed through airport security as long as they are completely frozen. If they are partially melted, slushy, or have any liquid at the bottom of the container, they must meet the standard liquids requirements. This means that they must follow the 3-1-1 rule for liquids in carry-on baggage.
The 3-1-1 rule, created by the Transportation Security Administration (TSA) in the USA, outlines the restrictions for carrying liquids on board your flight. The rule is simple: 3.4 ounces (100 milliliters) or less per item, 1 quart-sized bag, and 1 bag per passenger. This means each liquid container can be a maximum of 3.4 ounces or 100 milliliters, and they must all fit into one quart-sized, transparent, resealable bag. This bag must be presented separately during the airport security screening to ensure compliance with the rule.
The 3-1-1 rule applies to liquids, gels, aerosols, creams, and pastes. This includes items like toothpaste, lotion, and drinks. Medications and other necessary liquids are exempt from the rule but must be declared to TSA officers at the checkpoint. Solid cosmetics and toiletries are also not subject to the 3-1-1 rule.
It is important to note that non-compliance with the 3-1-1 rule can lead to manual bag searches, delays, and even disposal of non-compliant items. Understanding and following the rule can save time and stress at the airport, ensuring a smooth and hassle-free security check.
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Liquids larger than 3.4 ounces or 100ml must be packed in checked baggage
However, there is a workaround for those who wish to carry larger quantities of liquids. According to the TSA, frozen liquids are allowed through security as long as they are completely frozen solid when presented for screening. This means that if you freeze your water before reaching the airport, you can take it through security as it is considered a solid rather than a liquid.
It is important to note that this method may not always be practical or successful. The challenge lies in keeping the water frozen during the journey to the airport, while waiting in line, and through the security screening process. If the frozen liquid starts to melt and becomes partially liquid, slushy, or has any liquid at the bottom of the container, it will then be subject to the standard 3-1-1 liquids requirements and must be packed in checked baggage.
Additionally, it is worth considering the effort involved in freezing and transporting frozen water. Most airports provide water fountains or places to fill up your bottle after passing through security, making it more convenient to simply bring an empty or small water bottle and refill it once you are through. Therefore, while it is technically possible to carry frozen water larger than 3.4 ounces or 100ml through airport security, it may not always be the most practical or efficient option.
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An exception to the rule is breast milk, which is allowed in carry-on baggage in quantities greater than 3.4 ounces
While the TSA prohibits travelers from carrying liquids, gels, and aerosols larger than 3.4 ounces or 100 milliliters in their carry-on baggage, an exception is made for breast milk. According to TSA rules, breast milk is permitted in carry-on baggage in quantities exceeding 3.4 ounces or 100 milliliters. This allowance also extends to formula, toddler drinks, and baby/toddler food, including puree pouches. Additionally, breast milk and formula cooling accessories, such as ice packs, freezer packs, and gel packs, are also allowed, regardless of whether breast milk is present.
This exception ensures that parents or caregivers traveling with infants or young children have access to essential nourishment during their journey. It is important to note that the child or infant does not need to be present or traveling with the caregiver for this exception to apply. However, the TSA specifies that the amount of breast milk or formula allowed is limited to \"reasonable quantities,\" and the discretion lies with the individual TSA officer.
While this exception provides flexibility for those traveling with infants or toddlers, it is worth noting that frozen liquids, including water, are generally allowed through TSA security as long as they are completely frozen solid. Partially melted, slushy, or liquid substances at the bottom of the container are subject to the standard 3-1-1 liquids requirements. This means that travelers can bring frozen liquids, but they must ensure that the items are entirely frozen before reaching the airport security checkpoint.
Although the frozen liquid hack may work in some cases, it is important to be aware that some TSA agents may interpret the rules differently, and it is always better to be prepared and understand the regulations. Additionally, keeping liquids frozen during the journey to the airport and while waiting in line can be challenging, and it may be more effort than it's worth, especially considering the availability of water fountains and bottle-filling stations at most airports.
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Frequently asked questions
Yes, frozen liquids are allowed through security as long as they are completely frozen. If they are partially melted, slushy, or have any liquid at the bottom of the container, they must meet the standard liquids requirements.
The 3-1-1 rule for liquids in carry-on baggage states that you can bring one quart-sized bag of liquids, aerosols, gels, creams, and pastes in your carry-on bag and through the checkpoint. Each item inside the bag must be smaller than 3.4 ounces or 100 milliliters.
If your frozen water starts to melt, it will need to meet the 3-1-1 liquids requirements mentioned above. You could also try to keep it cool by packing it with ice or ice packs.
Yes, you can bring an empty water bottle through security and fill it up at a water fountain once you have passed through.




























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