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

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

If we talk about health & fitness enthusiasts, they are generally found carrying a hydro flask or such a sporty product. Whether navigating a morning run, embarking on urban explorations, or preparing for a journey afar. The instinct to secure it in their bag for air travel is second nature.

It transcends mere hydration; it’s a statement of their unwavering dedication to cleanliness and safety. They opt for their trusted personal thermos to ensure the pristine quality of their drinking unopened water on a plane, a hallmark of their health-conscious lifestyle.

If you’re curious about bringing your hydro flask on airplane, it’s smart to check the guidelines from the TSA. Understanding these rules will give you the information you need to know if your hydro flask can tag along on your flight adventure. Checking the TSA regulations can save you any surprises at the airport and ensure a smooth journey with your trusty water bottle in tow.

TSA Rules: Can You Bring a Hydroflask 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 water bottle in your carry-bag on a plane 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 3-1-1 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. If you are carrying other liquids like drinks on a plane in hand luggage, please cross-check the regulations.

Are Hydroflask 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?

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.

Hydro Flask

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 on a plane in luggage or any other material can be taken in hand luggage and/or checked baggage.

Can You take 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 (FAQs)

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 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.

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.


    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.

Leave a Reply

Get Up To 30% OFF on Online Flight Reservations, Hotel Bookings and Car Rentals around the world.