
Travelling with an infant can be a challenging task, especially when it comes to packing the right things for their care. One common concern among parents is whether they can bring water for baby formula through airport security. While regulations for liquids are usually strict, most countries allow parents to carry water for their baby's formula without any issues. However, it's always good to be prepared and know what to expect when passing through security checks.
Can you take water for formula through airport security?
| Characteristics | Values |
|---|---|
| TSA Classification | Medically necessary |
| Allowed Quantity | No limit |
| Containers | Baby bottles, flasks, sippy cups, thermoses, tumblers, water bottles |
| Water Type | Tap, bottled, boiled, sterilised |
| Screening Process | Additional screening, Advanced Imaging Technology, testing for explosives |
| Restrictions | None |
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What You'll Learn
- TSA regulations allow formula and breast milk in quantities larger than 3.4oz
- Water for formula can be carried in a thermos or water bottle
- TSA agents may test the water to ensure it's not explosives
- Baby formula is classified as medically necessary
- Formula and water can be purchased after the security check

TSA regulations allow formula and breast milk in quantities larger than 3.4oz
The Transportation Security Administration (TSA) allows formula, breast milk, juice, toddler drinks, and baby/toddler food in quantities greater than 3.4 ounces or 100 milliliters in carry-on baggage. These items do not need to fit within a quart-sized bag and are considered medically necessary liquids. This also applies if your child or infant is not travelling with you.
It is helpful to the TSA officers if these liquids are in clear, translucent bottles and not plastic bags or pouches. This is because liquids in plastic bags or pouches may not be able to be screened by Bottle Liquid Scanners. If you do not want the formula, breast milk, or toddler drinks to be X-rayed or opened, inform a TSA officer, and additional steps will be taken to clear the liquid.
Ice packs, freezer packs, frozen gel packs, and other accessories required to cool formula are also allowed in carry-ons, along with liquid-filled teethers. If these items are partially frozen or slushy, they are subject to the same screening as mentioned above.
Some travellers have reported bringing water for formula through airport security without any issues. One traveller reported bringing three 5oz bottles filled with water and a 20oz thermos with hot water. Another traveller reported bringing six bottles of water and a can of formula. However, some travellers have expressed concern about bringing water through security, suggesting that bringing factory-sealed water bottles and filling baby bottles after passing through security is a safer option.
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Water for formula can be carried in a thermos or water bottle
Water for baby formula can be carried in a thermos or water bottle through airport security. The Transportation Security Administration (TSA) classifies baby formula as medically necessary, so you can pack as much as you need for your trip without being limited to the 3.4-ounce rule that applies to other liquids. However, it's important to inform airport security of the amount of formula you're carrying and to remove it from your carry-on bag so that it can be screened separately. Some people have reported that TSA agents have tested the water to ensure it doesn't contain explosives, but this doesn't seem to be a common occurrence.
When carrying water for formula through airport security, you can choose to bring factory-sealed water bottles or fill your own bottles with water. Some people prefer to bring empty bottles and fill them with water once they pass through security to avoid potential leaks during transportation. It's recommended to use clear bottles as they make the testing process easier for TSA agents if needed. Additionally, you can carry ice packs, freezer packs, frozen gel packs, and other cooling accessories for formula without any issues.
If you need hot water for preparing the formula, a thermos can be a convenient option. However, be aware that if the water is too hot, you may be subjected to additional checks and screenings. It's a good idea to let the boiled water cool down a bit before pouring it into the thermos. Alternatively, you can mix hot water with room-temperature water to achieve the desired warmth for the formula.
Overall, travelling with water for baby formula doesn't have to be a stressful experience. By following the guidelines and sharing your needs with airport security, you can ensure a smooth journey for yourself and your little one.
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TSA agents may test the water to ensure it's not explosives
When travelling with infants, you are allowed to bring water for baby formula through airport security. However, additional screening procedures may be required to ensure the liquid is safe. TSA agents may test the water to ensure it does not contain explosives. This is because X-ray machines at checkpoints cannot always differentiate between explosive and harmless liquids.
TSA agents use various methods to test for explosive residue. One common method is to use swab tests, which can detect chemicals that might be used as explosives. These tests are highly sensitive and can detect even trace amounts of explosive residue. The swab is usually run over the passenger's hands, luggage, or other belongings. The samples collected from the swab are then analysed using advanced technology such as gas chromatography and mass spectroscopy (GCMS) or ion mobility spectrometers. These technologies help identify the presence of explosive compounds, such as nitrates and glycerin.
It is important to note that these chemicals can also be found in some harmless everyday products, which may lead to false positives during the testing process. In such cases, additional evaluation and testing may be required by the TSA agents to ensure the safety and security of all passengers.
To facilitate a smooth screening process, it is recommended to have the water easily accessible for inspection and to inform the TSA agents that it is intended for baby formula. Clear bottles or containers can also make the testing process easier for the agents.
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Baby formula is classified as medically necessary
While travelling with infants, it is important to know the rules and regulations regarding what you can and cannot carry through airport security. Baby formula is classified as medically necessary and is allowed by the TSA in quantities larger than 3.4 oz. Factory-sealed water bottles, empty baby bottles, or prefilled baby bottles are all allowed through security. If you are carrying ice packs, freezer packs, frozen gel packs, or liquid-filled teethers, they are also allowed but will be subject to additional screening procedures.
In the United States, the FDA considers baby formula to be a medically necessary product, especially for infants and individuals with special medical needs. The FDA has been working to ensure that these individuals have access to these life-sustaining products, as a shortage could significantly worsen underlying medical conditions and even pose life-threatening risks.
State insurance mandates also recognize the medical necessity of baby formula. For example, in Nebraska, residents with certain diagnosed allergies or disorders affecting the gastrointestinal tract can receive reimbursement for medically necessary amino acid-based elemental formulas. Similarly, in Maine, group health insurance policies, contracts, and certificates must provide coverage for amino acid-based elemental infant formula for children up to 2 years of age.
Overall, when travelling with infants, it is important to plan ahead and be aware of the regulations regarding baby formula and water. While the TSA does allow formula and water through security, it is always a good idea to check with them directly if you have any specific questions or concerns.
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Formula and water can be purchased after the security check
If you don't want to deal with the hassle of carrying water for formula through airport security, you can always purchase it after the security check. Many travellers have confirmed that they were able to buy bottled water at the airport gate or from the flight crew. This option is especially convenient if you're worried about potential spills or leaks from water bottles in your luggage.
When purchasing water after security, consider the temperature requirements for mixing your baby's formula. If your baby prefers warm formula, you can carry a thermos to fill with hot water, or you could look for warm water options at the airport. Some travellers have mentioned using water from airport water fountains, but keep in mind that this water might be too cold for your baby's preferences.
If you're concerned about the cost of buying water at the airport, you can bring empty bottles and fill them up at water fountains or ask flight attendants for additional water during your flight. This way, you can save money and still have easy access to water for formula preparation.
Additionally, when travelling with formula, remember that it is classified as medically necessary by the TSA. This means you can carry as much formula as needed for your trip without being restricted by the typical liquid limitations. Just make sure to inform airport security of the amount of formula you're carrying and be prepared for additional screening procedures.
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Frequently asked questions
Yes, you can bring water for baby formula through airport security. The TSA classifies baby formula as medically necessary, so you can pack as much as you need for your trip without being limited to the 3.4-ounce rule that applies to other liquids.
TSA agents will need to test the water to ensure it doesn't contain explosives, so clear bottles will make testing easier. However, some travellers have reported that TSA agents have not cared whether the water is in a transparent baby bottle or a regular water bottle.
Yes, when you go through security screening, inform the agents of the amount of water and formula you're carrying. Remove the water and formula from your carry-on bag so that the agent can screen it separately.
Yes, ice packs, freezer packs, frozen gel packs, and other accessories required to cool formula are allowed in carry-ons. These items are subject to the same screening procedures as liquid-filled teethers and baby food.











































