If you're someone who loves staying hydrated while traveling, you may have wondered whether it's possible to bring an empty metal water bottle on a plane. The good news is that, generally speaking, yes, you can bring an empty metal water bottle on a plane. However, there are some specific regulations and considerations to keep in mind when flying. In this article, we'll dive into the details of what the TSA¹ and airlines allow, so you can travel with your water bottle without any issues.

Empty metal water bottles are allowed through TSA security checkpoints, but you may need to follow certain guidelines.

Let's explore the specifics of taking your metal water bottle through airport security and onto the plane.

Can I Take an Empty Metal Water Bottle Through TSA?

Yes, you can take an empty metal water bottle through TSA security. The key is that the bottle must be completely empty when passing through security. TSA liquid regulations² prohibit bringing liquids over 3.4 ounces (100 milliliters) in your carry-on bag, so filling your bottle after security is the best option.

Metal water bottles, such as stainless steel, are permitted as long as they are empty when you go through TSA security.

Why Empty Bottles Are Allowed

TSA’s primary concern is liquids. Since an empty metal bottle contains no liquid, it does not pose a risk to security. However, the moment you fill the bottle with water, it would fall under the liquid restriction, and you’d have to adhere to the 3.4-ounce rule for liquids in your carry-on bag. It’s a simple way to ensure compliance while still bringing a reusable water bottle with you.

Things to Keep in Mind

• Make sure your bottle is completely empty.
• Avoid bringing water or any other liquids inside the bottle when passing through the TSA checkpoint.
• After you’ve passed through security, you can refill your bottle at airport water refill stations³ or any other available sources inside the airport.

Can You Take Metal Water Bottles on Planes?

Yes, you can take metal water bottles on planes, but again, they must be empty when you go through security. Once you’re through TSA, you can refill your bottle with water, juice, or any other beverage of your choice.

Most airlines allow metal water bottles in your carry-on, as long as they comply with TSA liquid regulations.

Types of Metal Bottles Allowed

Common metal water bottles like stainless steel bottles, such as Hydroflask and Yeti⁴ bottles, and other popular brands, are perfectly fine to take on the plane. Whether it's a 12 oz or a 64 oz bottle, as long as it’s empty when you pass through security, it’s not a problem.

If you have a large water bottle, like the 64 oz size, you can bring it through TSA, but remember to refill it after passing through security.

Why is a Water Bottle Not Allowed in a Flight?

Water bottles filled with liquid are not allowed past TSA security checkpoints because of the potential risks associated with carrying large quantities of liquid. The 3.4 oz rule exists⁵ to ensure the safety of passengers by limiting the amount of liquid a person can bring on board in their carry-on.

Water bottles are not allowed on planes when they contain more than 3.4 ounces of liquid, due to TSA’s liquid restriction.

Security Reasons for Liquid Restrictions

TSA liquid regulations are in place to prevent dangerous liquids from being carried aboard aircraft. While a water bottle itself isn’t a security threat, any liquid inside could potentially pose a risk if it contains something harmful. This is why TSA requires that liquids be limited to small quantities when traveling in your carry-on bag.

Can I Bring a 64 oz Water Bottle on a Plane?

Yes, you can bring a 64 oz water bottle⁶ on a plane, but it must be empty when passing through TSA security. After you’ve cleared security, you can fill it up at any of the water stations or fountains inside the airport.

Larger water bottles, such as a 64 oz bottle, are allowed as long as they are empty when you go through TSA.

Considerations for Large Bottles

• Space in Carry-On: A 64 oz bottle is quite large, so make sure it fits comfortably in your bag or backpack. Be mindful of how much space you have for other items.
• Refilling After Security: After you’ve passed security, you can easily fill up a large bottle at the nearest water refill station, which is a great way to stay hydrated throughout your flight.

Conclusion

In conclusion, bringing an empty metal water bottle on a plane is generally allowed by TSA, as long as it’s completely empty when you go through security. Once past security, you can refill your bottle with water or any beverage. Whether you’re carrying a Hydroflask, Yeti, or another metal bottle, make sure it’s empty to comply with TSA’s liquid restrictions. By following these simple guidelines, you can travel with your favorite reusable water bottle without any issues.