Can You Bring A Hydroflask On A Plane? – Fly With Thermos

Can You Bring A Hydroflask On A Plane? – Fly With Thermos

Travelling can be a hassle, especially when it comes to packing and figuring out what items you can or cannot bring on a plane. For those who prioritize staying hydrated on the go, a Hydro Flask may be an essential item to bring on a flight. However, it’s important to know if you can bring a Hydroflask on a plane. In this article, we’ll explore the rules and guidelines set by the TSA regarding Hydro Flasks on airplanes.

Health and fitness enthusiasts are generally found carrying a hydro flask or such a sporty product. 

If you like to keep it while jogging or while you visit somewhere, you may be thinking of packing it in the bag for an air trip. No doubt, some people are hygiene conscious and like to keep their own thermos to have safe drinking water.

So, if you wish to know whether you can bring a hydro flask on a plane, it’s advised to stay acquainted with the rules set by the Transportation Security Administration (TSA). 

Can You take a Hydro Flask on a Plane?

According to the TSA rules, you can take a hydro flask on plane, water bottle, or thermos on a plane, as long as they are empty. You can get them verified at the checkpoint and fill water after that at the water sections available at the airport. 

Even in checked baggage also, you should keep them without water so as to prevent leakage. But, they are permitted with water in this type of luggage. 

Also, if the bottle is not made of plastic, but of metal, the TSA officer may ask you to take it out for additional screening. If something is not found right, or the officer is not able to verify it properly, you may have to go ahead without your flask. 

Can I Bring My Hydroflask on a Plane in Carry-on Bag?

Surely! The TSA gives you the freedom to pack a hydro flask in your carry-on bag. However, you need to keep it empty so that the inside area can be completely screened or verified by the TSA officer.

As per the TSA liquids rule, passengers are permitted to take liquid items in containers that are not more than 3.4 ounces or 100 ml. The containers should be packed in a transparent quart-sized bag, which can then be placed in your hand luggage. 

But you may not be able to go past security even with a flask (filled with water), which is not more than 3.4 ounces or 100 ml. So, be sure to keep it empty. 

Are Hydroflasks Allowed on Planes in Checked Baggage?

Certainly! There are no restrictions on keeping them in your checked luggage. But, again, please keep in mind not to fill them with water. Otherwise, there can be leakage if the baggage is mishandled during transit. 

What Size of a Hydro Flask can be Taken on a Plane?

What Size of a Hydro Flask can be Taken on a Plane, Fly with hydro flask on plane

There are no restrictions as such when it comes to considering the size. You can take it in small or large sizes, provided you keep it empty. Usually, the TSA operates with a strict liquids rule, as per which the containers carrying liquids should not be more than 3.4 ounces or 100 ml.

But, taking water in a flask may block the view for TSA agents. The inner area of the flask is thoroughly examined at airport security. They will let you go through without any problems if they find everything is fine. You are advised to keep it empty.

Is it possible to fill my hydro flask on plane before boarding the plane?

Once your hydro flask gets cleared at the TSA security checkpoint and you move ahead, you can fill it at tap sections or water sinks available at the airport. Well, you need not worry, as you are provided with water on board. 

Can You Bring a Hydro Flask on an International Flight?

Yes, the TSA rules are the same as that of domestic flights within the USA. However, the TSA always emphasizes keeping them empty while traveling. 

Rest you need to check whether your airline has specific policies related to a hydro flask or thermos. It’s better to confirm in advance if such bottles made of metal or any other material can be taken in hand luggage and/or checked baggage. 

Can a Hydro Flask Explode on a Plane?

Well, the usual concern of changing air pressure at such a great height on a plane may have created doubt in your mind. But, a hydro flask does not explode in such a case.

But, you need to be careful while opening it on your flight. First, slightly open the lid and release the air slowly. Then you can drink water with ease. 

Concluding Lines

Overall, there seems to be no issue with taking a hydro flask on airplane, as long as you don’t fall into a situation where it may be confiscated. There have been situations when passengers had to leave their hydro flasks at security checkpoints, as the TSA agents didn’t clear them.

The TSA lets you place them in your hand luggage and/or checked baggage without restrictions. But, make sure to keep them empty in the former, as they can be filled easily once the security checkpoint clears it.  It’s also better to keep them empty in checked luggage, due to the chances of leakage, though it’s allowed to keep them filled in this type of bag. 

Frequently Asked Questions

Can I bring an empty hydro flask on a plane?

Yes, you can bring an empty hydro flask on a plane.

Is a metal flask allowed in flight?

Yes, a metal flask is allowed on a flight, but you need to check the policy of your airline.

Can I carry flask in cabin bag?

Yes, you can carry a flask in your cabin bag.

Can you bring a flask on a plane?

Yes, you can bring a flask filled with liquid through airport security but it comes under strict TSA Liquid rules. If you want to bring a flask with you on a plane, it would need to be empty and placed in your checked luggage.

Can you bring a thermos on a plane?

Yes, you are typically allowed to bring a thermos on a plane, but it must be empty when you go through airport security.

People May Also Read

  1. TSA Liquid Limit & 3-1-1 Liquid Rule
  2. Can You Bring Water Bottle On A Plane?
  3. Can You Bring Cologne On A Plane?


    Courtney Ingram
  • Do flight attendants usually allow you to refill your Hydro Flask on the plane, or should I plan to fill it up before boarding?
  • Huey Pittman
  • Are there any size restrictions for Hydro Flasks when it comes to airline carry-on baggage? I don't want to end up having to check it in.

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