
Travelling with a baby can be stressful, especially when it comes to packing water and formula for a plane. While passengers are usually only allowed to bring a maximum of 3.4 ounces (100ml) of liquid in their cabin luggage, this rule doesn't apply to baby formula. Formula, breast milk, and baby food are considered medically necessary liquids, and you can bring more than 3.4 ounces (100ml) in carry-on baggage. However, rules can vary from country to country, so it's important to research what's permitted at your specific destination. While some airports allow sealed bottled water for baby formula, others may require you to bring an empty bottle and fill it after passing through security. It's also a good idea to keep everything in your diaper bag, which is usually allowed on U.S. flights, and to inform the TSA officer at the beginning of the screening process that you're carrying formula.
| Characteristics | Values |
|---|---|
| Amount of water allowed | A "reasonable" amount is allowed, but the rules are vague. Some travellers bring two regular water bottles of tap water, while others bring up to six bottles. |
| Packaging requirements | The rules do not specify how the water should be packaged, but some travellers recommend bringing sealed bottled water or an empty bottle to fill after passing security. |
| Screening process | Travellers should inform the TSA officer at the beginning of the screening process that they are carrying water for baby formula. The water will be tested separately from other belongings and may take 1-2 minutes per bottle. |
| Bringing formula and water separately | It is recommended to bring the formula and water separately and mix them after passing security. |
| Keeping formula at the right temperature | Formula can be kept cold using ice packs or gel packs, or warmed up using a portable bottle warmer or hot water from a flight attendant. |
| Diaper bags | Most airlines allow you to bring a diaper bag in addition to your carry-on and personal items. This can be a convenient place to store water and formula. |
| Country-specific variations | Rules can vary from country to country. Some countries in Asia and the Middle East require medical proof for large amounts of liquid formula. |
| Contacting TSA | Travellers can contact TSA via iMessage, Facebook, Twitter, Instagram, or phone before their trip to ask questions about bringing water for formula. |
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What You'll Learn

Rules vary by country and airline, so check in advance
Rules regarding bringing water for formula through airport security vary by country and airline, so it is important to check in advance. While some countries and airlines may allow sealed bottled water for baby formula, others may require medical proof for large amounts of liquid formula.
In the United States, the Transportation Security Administration (TSA) allows formula, breast milk, 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 can be screened separately from other belongings. However, TSA officers have the final decision on whether an item is allowed through the checkpoint. It is recommended to inform the officer at the beginning of the screening process if you are carrying formula and related supplies.
Some travelers have reported being allowed to bring water bottles for formula through TSA security without any issues, while others have suggested bringing an empty bottle and filling it after passing security. To avoid any problems, it is advisable to keep water and formula together in a diaper bag, clearly indicating that they are for a baby. Additionally, some airlines may have specific policies regarding diaper bags, such as size restrictions or allowing them as a carry-on item.
When traveling internationally, it is essential to research the specific rules and regulations of your destination country and airline. Some countries, such as those in Asia and the Middle East, may have stricter requirements, including the need for medical proof for large amounts of liquid formula. Checking airport websites and contacting the TSA or equivalent authorities in advance can help ensure a smooth travel experience.
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Bring water in a thermos, stored in a diaper bag
Bringing water through airport security for your baby's formula is possible, but there are some guidelines you need to follow. Firstly, according to the TSA, formula, breast milk, toddler drinks, and baby/toddler food are considered medically necessary liquids and are allowed in quantities greater than 3.4 ounces or 100 millilitres in carry-on baggage. This means you can bring water specifically for your baby's formula in a reasonable amount.
Now, when it comes to bringing water in a thermos stored in a diaper bag, there are a few things to keep in mind. Firstly, inform the TSA officers at the beginning of the screening process that you are carrying water for baby formula. They may need to screen the water separately from your other belongings. Make sure to keep the water separate from the rest of your items and clearly visible. You can also request assistance or accommodation during the screening process by contacting TSA Cares before your travel date.
It is important to note that beverage containers, whether empty or full, are typically not allowed through walk-through metal detectors. However, sealed containers like flasks or thermoses may be submitted for X-ray screening. So, if you're bringing water in a thermos, make sure it is a sealed container. Additionally, consider using leak-proof, double-walled, or insulated bottles to prevent leaks and maintain the temperature of the water.
Some travellers suggest bringing an empty thermos and asking for hot water from a coffee shop or restaurant after passing through security. This can be a convenient way to ensure you have hot water for your baby's formula without worrying about restrictions. Alternatively, you can bring an empty water bottle in your carry-on bag and refill it at a water fountain, which are typically available post-security.
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Bring an empty bottle and fill it after security
Bringing water for baby formula through airport security can be a stressful experience, but there are ways to make it easier. The Transportation Security Administration (TSA) in the US makes exceptions for baby food and liquids, so you can bring more than the usual 3.4 oz (100 ml) limit. This also applies to breast milk and formula cooling accessories, such as ice packs, freezer packs, and gel packs. It's important to note that the rules can vary from country to country, so be sure to research the regulations for your specific destination.
One recommended option is to bring an empty bottle and fill it with water after passing through security. This helps to avoid any issues with bringing water through security, as TSA usually does not allow bottled water. Some airports may permit sealed bottled water if it is intended for baby formula, but it is best to check in advance to avoid any problems. By bringing an empty bottle, you can fill it with water once you are through security and have easy access to water for preparing your baby's formula.
To ensure a smooth process, it is advisable to keep the formula and water separate and clearly inform the TSA officers that you are carrying water for baby formula. You can also store everything in your diaper bag, which is typically allowed in addition to your carry-on luggage. Additionally, you can contact TSA through various channels, such as iMessage or social media, to seek clarification on any specific concerns or questions you may have before your travel.
Bringing an empty bottle and filling it after security is a convenient approach to addressing the challenges of travelling with a baby. By familiarizing yourself with the regulations, packing accordingly, and staying organized, you can ensure that your baby's needs are met while navigating airport security with ease. Remember to plan ahead and don't be afraid to seek assistance if needed.
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Breast milk and formula are considered medically necessary liquids
When passing through airport security, it is recommended to inform the TSA officer at the beginning of the screening process that you are carrying formula, breast milk, or related items in excess of 3.4 ounces. These items should be removed from your carry-on bag and screened separately from your other belongings. It is also advised to keep these items together in a diaper bag, which is typically allowed in addition to your carry-on luggage.
While bringing water for formula through airport security is permitted, the rules can be vague. Some sources suggest bringing an empty bottle and filling it with water after passing security. Others suggest bringing bottled water, but the water should not be in baby bottles, and it may need to be sealed. Bringing water in a thermos is also an option, especially if the formula needs to be prepared with warm water. It is always a good idea to check with the specific airport and airline beforehand to understand their policies.
Additionally, cooling items such as ice packs, gel packs, and frozen breast milk storage bags are typically allowed but may require extra screening. Printed guidelines from official sources can be helpful to carry in case a security officer questions the allowance of these items.
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You can bring more than 3.4 oz (100ml) of formula and breast milk
If you are travelling with an infant or young child, you can bring more than 3.4 oz (100ml) of formula, breast milk, toddler drinks, and baby/toddler food. These are considered ""medically necessary liquids" and are exempt from the usual liquid restrictions. You can also bring breast milk pumping equipment and cooling accessories such as ice packs, freezer packs, and gel packs. Your child does not need to be present or travelling with you to bring these items.
However, rules can vary from country to country, so it is important to research what is permitted at your specific travel destination. It is recommended to check airport websites for detailed information. In some cases, such as in Asia and the Middle East, medical proof may be required for large amounts of liquid formula.
When passing through airport security, inform the TSA officer that you are carrying formula, breast milk, or related items in excess of 3.4 oz. Remove these items from your carry-on bag to be screened separately from your other belongings. You can request assistance from TSA Cares before your trip if you have concerns about the screening process. It is also possible to contact TSA via iMessage or social media to ask questions and receive a record of their response.
To make travelling with formula and breast milk easier, consider packing powdered formula in a formula dispenser with pre-measured sections. Alternatively, bring an empty bottle and fill it with water after passing through security. You can keep formula cold with ice packs or warm it up when needed. Ask flight attendants for ice or hot water as needed.
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Frequently asked questions
Yes, you can bring water for formula through airport security.
You are allowed to bring a reasonable amount, which is typically more than the standard 3.4 ounces (100ml) limit for liquids.
It is recommended to bring water in sealed bottles or a thermos, and to keep it separate from other liquids. Some suggest bringing an empty bottle and filling it after passing security.
Yes, inform the TSA officer at the beginning of the screening process that you are carrying water for baby formula.
Yes, rules can vary from country to country. Some locations, such as Asia and the Middle East, may require medical proof for large amounts of liquid formula. It is recommended to research the specific regulations for your travel destination.











































