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lite.cnn.com - on gopher - inofficial
ARTICLE VIEW:
The TSA-approved hack that allows travelers to bring a bottle of water
through airport security
By Karla Cripps, CNN
Updated:
12:38 PM EDT, Thu July 3, 2025
Source: CNN
As millions of Americans take to the skies during what’s shaping out
to be of high temperatures, some will likely be searching for easy
travel hacks to help make their journeys a little less painful.
Among the many flying tips making the rounds in recent years on TikTok,
this one continues to pop up: how to get a full bottle of water through
a US airport security checkpoint.
The answer is simple — freeze it first.
No, you wouldn’t be breaking any rules. The US Transportation
Security Administration (TSA) is actually on board with this one.
“​Frozen liquid items are allowed through the checkpoint as long as
they are frozen solid when presented for screening,” a TSA
spokesperson confirmed to CNN by email.
“If frozen liquid items are partially melted, slushy or have any
liquid at the bottom of the container, they must meet requirements,”
they added, referring to the TSA’s rule that allows each passenger to
bring liquids, gels and aerosols in containers that are less than 3.4
ounces or 100 milliliters and can all fit into a single quart-sized
bag.
What to do if your frozen bottle starts to melt? Drink it before you
put your items into the security bin.
There are of course exceptions to the 3-1-1 rule — the TSA allows
larger amounts of medically necessary liquids, gels and aerosols in
carry-on luggage, and these need to be declared to officers at the
security checkpoint for inspection. Your pet goldfish? Apparently .
Ultimately, the best advice is to not pack any foods or frozen liquid
items into your carry-on luggage that you would be upset to throw away.
“The final decision rests with the TSA officer on whether an item is
allowed through the checkpoint,” reads the TSA website.
What’s the point?
Not surprisingly, some travelers just can’t warm up to the thought of
bringing frozen bottles through security.
Many who commented on and blogs about the hack said they didn’t see
the point, given you can just take an empty bottle through security and
at the widely available water dispensers most airports now offer in
departure halls.
Others couldn’t imagine why someone would go to all that trouble just
to avoid paying for a bottle of water on the other side, regardless of
the inflated prices. A few even pointed out that the ice might melt too
slowly for a passenger to even have time to drink it if they’re on a
short flight.
Meanwhile, some travelers expressed surprise that this hack wasn’t
common knowledge; the TSA has issued regular reminders on its .
Among the frequent flyers who feel the idea has its merits is aviation
blogger John E. DiScala, aka , who has traveled over 100,000 miles a
year since 1995 and visited over 100 countries.
“While I’ve never personally brought a frozen water bottle through
security, there are times when this travel hack makes sense,” he told
CNN in 2024.
“Yes, you can always fill your bottle up post-security, which is what
I always do. But sometimes, you can’t find a refilling station,
there’s a long line or you just don’t have enough time to do it
before boarding. In these instances, it would be nice to already have
your ice-cold water with you.”
He also pointed to last summer’s aviation disruptions as a reason to
pop a bottle into the freezer before your flight.
“Water from a refilling station is fine but in extreme heat, nothing
will beat ice-cold water,” said DiScala.
“There were many stories about passengers stuck on delayed flights,
sitting on the tarmac, who I’m sure wished they had some cold water
to drink to stay hydrated.”
‘It’s always smart to be prepared’
When asked if some travelers are motivated to bring frozen bottles
through US airport security checkpoints simply for the thrill of
outsmarting “the man,” DiScala agreed that may be part of it, but
stresses this trick really could come in handy.
“Sure, people love travel hacks that make them feel like they’re
beating the system — like shoving an extra carry-on bag’s worth of
clothes into a travel pillow — but this one is not only easy and
inexpensive but it could really help to keep you safe, hydrated and
healthy,” he said.
“I never like to be at the mercy of the flight attendants for water
so it’s always smart to be prepared and have your own.”
Travelers outside of the US should check what the policy is in the
country they’re departing from before going to the trouble of
freezing their water bottles. Canada, for instance, isn’t quite so
chill.
Though the (CATSA) doesn’t specifically mention frozen water bottles
on its website, it does note that gel and ice packs are subject to 100
ml liquid restrictions, as are non-solid foods, .
“Frozen liquids, such as ice, are permitted in quantities of 100 ml
(3.4 oz) or less,” says a post on the CATSA website.
“Food over 100 ml that is normally a liquid or gel but has been
frozen solid will not be allowed to pass through security in your
carry-on. In order for a food to be considered a solid, it must be
solid at room temperature.”
The hacks that make us go ‘why?’
That the frozen water bottle hack found fame on TikTok should come as
little surprise. The app is filled with various tricks and tips aimed
at helping fliers, while also highlighting various trends.
While some might come in handy, others occasionally evoke ire.
Take last year’s , in which people shared artfully arranged shots of
their sunglasses, shoes, toiletries and reading material inside the
regulation polypropylene containers.
Even though many people were actually just sharing images of trays they
set up at home, the posts attracted negative reactions, with some
commenting the airport security line is not the place to be setting up
a photo shoot.
And then there are the travelers who appear to want to make flying even
more anxiety-inducing than it already is. Enter a TikTok trend that
claims people should be able to arrive at the airport as little as 15
minutes before their flight boards — provided they check in online
and only travel with carry-on luggage.
Meanwhile, the award for the most unfortunately named flying trend that
travelers are bragging about online goes to …. . For this one, flyers
have been sharing personal tales of their mental prowess, claiming they
spent the entire flight without any entertainment whatsoever — no
books, no movies, no music.
But not all of the viral posts are harmless. For instance, experts have
come out to express their concern about one so-called flying hack
making the rounds on TikTok and Instagram that promised to help flyers
sleep better.
In , which have racked up millions of views, passengers can be seen
pulling their knees up to their chest and placing their feet at the
edge of their seats. Then, they secure their seatbelts around their
ankles to prevent their feet from slipping off the seat, allowing them
to rest their heads on their knees.
Not surprisingly, flight attendants in the US aren’t in favor of
passengers attempting this one.
“This is extremely dangerous,” Sara Nelson, president of the
Association of Flight Attendants-CWA, which represents 55,000 flight
attendants at 20 airlines, told CNN Travel .
“The seatbelt is designed to sit low and tight across your lap. This
is to best protect you in the event of turbulence, an emergency landing
or an accident. This is not only for your safety; if you are not
properly buckled in you will likely hurt someone else when thrown in
turbulence.”
This story first published in 2024 and was updated in July 2025.
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