Staying hydrated is key when traveling, but can you bring your own water through airport security and onto your flight?

The quick answer is yes, you can bring water on a plane in your carry-on bag if it adheres to TSA’s liquid rules. There are strict regulations around water container sizes and storage that impact what you can pack.

In this comprehensive guide, we’ll cover everything you need to know about bringing water on a plane, including:

The maximum amount of water permitted

Acceptable types of water containers for air travel

How to pack water to comply with TSA requirements

Smart ways to stay hydrated in-flight

And frequently asked questions about water and airport security

TSA Liquid Rules for Water

When it comes to bringing water on a plane, the Transportation Security Administration (TSA) has specific rules and guidelines that travelers must follow. These rules are in place to ensure the safety and security of all passengers onboard.

Understanding these regulations can help make your journey through airport security a smoother experience.

Containers Must Be 3.4 Ounces or Less

The TSA liquid rules state that all containers carrying liquids, including water, must be 3.4 ounces (100 milliliters) or less. This includes bottled water, reusable water bottles, and any other form of liquid you wish to bring with you.

It’s important to note that the 3.4-ounce limit is per container, so if you have multiple bottles of water, each one must be within the allowed size limit.

Pro tip: If you prefer to have a larger amount of water with you during your flight, consider purchasing a bottle of water at the airport after passing through security. This way, you can stay hydrated without the hassle of having your water bottle confiscated at the security checkpoint.

All Water Containers Must Fit in One Quart Bag

In addition to the size limit for individual containers, all containers carrying liquids, including water, must fit comfortably in a single quart-sized clear plastic bag. This bag should be placed in a separate bin during the security screening process for easier inspection.

Each passenger is allowed one quart bag of liquids, so it’s important to make sure your water containers fit within this requirement.

Fun fact: This rule applies to all liquids, not just water. So, if you’re planning to bring other liquids such as shampoo or lotion, make sure they also adhere to the 3.4-ounce size limit and fit in the quart bag.

Empty Water Bottles Can Go Through Security

If you prefer to bring your own water bottle from home, you can do so as long as it is empty. The TSA allows passengers to bring empty water bottles through security checkpoints. Once you have passed through the screening process, you can fill up your bottle at a water fountain or purchase water from a vendor inside the airport.

Pro tip: Investing in a collapsible water bottle can be a great option for travelers. These bottles take up minimal space in your carry-on bag when empty and can easily be refilled once you’re past security.

For more detailed information on TSA liquid rules, you can visit the official TSA website at

Types of Water Containers Allowed

Reusable Plastic Bottles

When it comes to bringing water on a plane, reusable plastic bottles are generally allowed. These bottles are a great option for travelers who want to stay hydrated during their journey. They are typically made of durable plastic and come in various sizes.

It is important to note that the bottle must be empty when going through airport security. Once you have passed through security, you can fill up your bottle at a water fountain or purchase bottled water from one of the airport shops.

Reusable plastic bottles are not only convenient but also environmentally friendly, as they help reduce single-use plastic waste.

Disposable Plastic Bottles

Disposable plastic bottles are also allowed on planes. These bottles are commonly used for single-use purposes and are often seen as a convenient option for travelers who don’t want to carry around a reusable bottle.

However, it’s important to note that these bottles must be sealed when going through airport security. If you have an opened bottle, you may be asked to discard it. It’s always a good idea to double-check the regulations of the airline you are flying with, as some may have specific restrictions on the types of disposable plastic bottles allowed.

Canteens or Pouches

Canteens or pouches are another option for bringing water on a plane. These containers are typically made of lightweight materials and are designed to be carried easily. They often have a screw-on or flip-top lid to prevent any spills during travel.

Canteens and pouches are convenient for travelers who want to bring a larger amount of water with them. It’s important to make sure that the canteen or pouch is empty when going through airport security, as liquids are generally not allowed in containers larger than 3.4 ounces (100 milliliters).

Foldable Silicone Bottles

Foldable silicone bottles are a popular choice for travelers due to their compact and collapsible design. These bottles are made of flexible silicone material that can be easily folded or rolled up when empty, saving space in your luggage. They come with a leak-proof cap or lid to prevent any spills.

Foldable silicone bottles are often allowed on planes, but it’s important to check the regulations of the airline you are flying with, as some may have specific restrictions on these types of bottles.

It’s always a good idea to familiarize yourself with the specific regulations of the airline you are flying with regarding water containers. These regulations can vary from airline to airline and may change over time.

For more detailed information, you can visit the website of the airline or check the Transportation Security Administration (TSA) website at Remember, staying hydrated during your flight is important for your comfort and well-being, so make sure to choose the right water container that suits your needs!

How to Pack Water in Your Carry-On

When it comes to packing water in your carry-on luggage, there are a few important guidelines to follow. These guidelines are in place for the safety and security of all passengers on the plane. Here is a detailed guide on how to pack water in your carry-on:

Measure Out 3.4oz per Bottle

According to the Transportation Security Administration (TSA), you are allowed to bring liquids in containers that are 3.4 ounces (100 milliliters) or less in your carry-on bag. This includes water bottles.

Therefore, if you want to bring water on the plane, make sure to measure out each bottle to ensure it does not exceed this limit. This is an important step to remember, as any bottles larger than 3.4 ounces will be confiscated by security.

Group All Water Together in Quart Bag

In addition to measuring out the water bottles, it is also important to group all the water bottles together in a clear, quart-sized bag. This is a requirement by the TSA and helps airport security quickly identify and inspect your liquids.

By keeping all your water bottles in one bag, you can easily present them for inspection and avoid any potential delays during the security screening process.

Separate from Other Liquids

When packing your water bottles, it is crucial to separate them from other liquids in your carry-on bag. This includes separating them from other beverages, toiletries, and any other liquid-based items.

By doing so, you make it easier for airport security to identify your water bottles and avoid any confusion during the screening process. Additionally, separating your water bottles from other liquids helps prevent any potential spills or leaks that could damage your belongings.

Remember, it is always a good idea to check the official TSA website for the most up-to-date guidelines on packing water and other liquids in your carry-on bag. By following these guidelines, you can ensure a smooth and hassle-free travel experience.

Staying Hydrated During Your Flight

When it comes to staying hydrated during a flight, it’s important to plan ahead. Airplane cabins have low humidity levels, which can cause dehydration. To ensure you stay hydrated throughout your journey, here are some tips:

Refill Water Past Security

While you can’t bring liquids through security, you can bring an empty water bottle. Once you’re past security, look for water fountains or beverage stations where you can refill your bottle. This way, you’ll have access to water throughout your flight without having to rely solely on the drinks offered by the airline.

Bring an Empty Bottle to Fill

Bringing an empty water bottle is a great way to stay hydrated during your flight. Not only will you save money by avoiding overpriced airport drinks, but you’ll also have a convenient container to refill whenever you need.

Just make sure the bottle is empty before going through security to comply with the regulations.

Request Cups of Water from Attendants

If you don’t have a water bottle or if it’s not convenient to use during the flight, you can always ask the flight attendants for cups of water. They are usually more than happy to provide you with water throughout the duration of the flight.

Remember to be polite and considerate of their time and other passengers’ needs.

Staying hydrated is essential for a comfortable and healthy flight. By following these tips, you can ensure that you have access to water throughout your journey, keeping you refreshed and hydrated until you reach your destination.

Frequently Asked Questions

Can I Bring Ice or Frozen Water?

Unfortunately, the Transportation Security Administration (TSA) prohibits bringing ice or frozen water through the security checkpoint. This includes ice packs, even if they are still frozen. The reason for this restriction is that frozen items could potentially melt and turn into liquid, which is subject to the TSA’s liquid restrictions.

What About Water Flavorings and Drink Mixes?

Water flavorings and drink mixes, such as flavored powder or liquid packets, are generally allowed in carry-on bags. However, they must adhere to the TSA’s liquid restrictions. Each container of flavoring or drink mix must be 3.4 ounces (100 milliliters) or less and should be placed in a clear, quart-sized bag with other liquids and gels.

If you have larger containers of flavorings or drink mixes, it is recommended to pack them in your checked baggage to avoid any issues at the security checkpoint.

Is Bottled Water Sold on Planes?

Most airlines do offer bottled water for sale on planes. However, it’s important to note that the prices may be higher compared to purchasing water before your flight. If you prefer to have water readily available during your journey, it’s a good idea to bring an empty reusable water bottle through the security checkpoint and fill it up at a water fountain or refill station in the airport.

Remember to check with your specific airline for their policies regarding the sale and availability of bottled water on board.


We hope this guide provides clarity on what types of water you can bring aboard your next flight. By following TSA regulations, you can stay refreshed and hydrated at 35,000 feet.

The key takeaways are: limit water to 3.4oz containers, group them together in one transparent bag, and separate from other liquids. With proper preparation, you can enjoy water wherever your travels take you.

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