The 2025 TSA Landscape: Why Organization is Your Best Defense

Airport security has never demanded more from travelers than it does right now. In 2024, the Transportation Security Administration screened over 904 million passengers and processed more than 2 billion carry-on items — numbers that make every checkpoint a high-stakes, high-volume operation where one unprepared bag can slow down an entire line.

Understanding the tsa rules for carry on isn't optional in 2025 — it's the single most powerful thing you can do to protect your time, your belongings, and your fellow travelers.

What makes today's environment particularly unforgiving is that TSA officers are sharper than ever. Interception rates for prohibited items continue to climb, meaning bags that might have slipped through in previous years are now being flagged and pulled with greater frequency. The checkpoints are busier, the scrutiny is tighter, and the margin for error is smaller.

The good news? Passing through security without a hitch is far less about memorizing an endless checklist and far more about building a reliable packing system. Compliance is a matter of system, not just memory. The sections ahead break that system down — starting with the rule that trips up more travelers than any other: liquids.

Decoding the 3-1-1 Liquids Rule: Beyond the 3.4oz Limit

Understanding the carry on liquid limit is non-negotiable for smooth security screening. The TSA's 3-1-1 rule breaks down simply: each liquid must be in a container 3.4 ounces (100ml) or smaller, all containers must fit inside 1 quart-sized, clear, resealable bag, and each traveler gets 1 bag. It sounds straightforward — until you realize just how broadly "liquid" is defined.

The rule of thumb that changes everything: According to TSA guidelines, if an item spreads, squeezes, smears, sprays, or pours, it counts as a liquid under TSA regulations. That single sentence reframes your entire packing strategy.

Surprising Items That Count as Liquids

Most travelers are blindsided at the checkpoint because they don't realize how many everyday products fall under this definition. Common offenders include:

• Mascara and liquid eyeliner — any tube with a wand applicator

• Toothpaste — yes, even the gel-free varieties

• Gel deodorant and stick antiperspirant with gel texture

• Peanut butter and hummus — they spread, so they qualify

• Yogurt, salsa, and similar food items

• Lip gloss and liquid foundation

• Aerosol dry shampoo or sunscreen

In practice, what surprises most travelers isn't the obvious bottles — it's the cosmetics and food items packed almost as afterthoughts.

Organizing Your Bag to Avoid Delays

One practical approach is to use a multi-compartment toiletry bag to physically separate liquid items from solids before you even start packing. Dedicate one clear pouch exclusively to your quart-bag contents, and keep solid toiletries — bar soap, solid shampoo bars, powder sunscreen — in a separate compartment. This makes pulling out your liquids at the checkpoint fast and automatic rather than frantic.

It's worth noting that even perfectly packed liquids bags get flagged occasionally if containers appear overfull or unlabeled. Clear, labeled travel bottles reduce that risk considerably.

Of course, the 3-1-1 rule isn't the whole story. Certain travelers — parents, patients, and caregivers — qualify for important exemptions that allow them to carry larger liquid quantities without that quart-sized bag at all.

Critical Exemptions: Medically Necessary Liquids and Infant Care

Generic packing guides often skip the most important detail for millions of travelers: the 3-1-1 rule has real exceptions. Knowing which TSA rules for carry-on items simply don't apply to your situation can save you from discarding expensive medication or baby formula at the checkpoint.

Traveling With Infant Care Items

Parents traveling with infants get significant breathing room under TSA policy. Breast milk, formula, and juice for a child are all exempt from the 3.4-ounce limit, meaning you can carry reasonable quantities — think full bottles and frozen milk packs — without fitting them into your quart-sized bag. Per TSA.gov, these items must be declared for separate inspection, but they won't be confiscated for exceeding standard volume limits.

How to declare infant care liquids:

• Remove items from your bag and place them in a separate bin before the X-ray belt

• Verbally inform the TSA officer: "I have infant formula and breast milk to declare"

• Expect additional screening, such as a liquid test strip — this is routine, not a red flag

• Keep these items in an outer, easily accessible compartment to minimize delays

Traveling With Liquid Medications

Liquid medications — prescription or over-the-counter — also bypass the standard quart-bag requirement entirely. In practice, carrying a clearly labeled bottle or a printed prescription card speeds the process considerably.

How to declare liquid medications:

• Separate all liquid medications from your main bag before reaching the conveyor

• Inform the officer upfront; proactive disclosure typically shortens inspection time

• Keep medications in a dedicated pouch near the top of your carry-on for fast retrieval

The smartest move is treating these exemptions like a category of their own — store them together, declare them early, and the separate screening process becomes a minor pause rather than a stressful hold-up. Speaking of items that absolutely must stay accessible and separate, your electronic devices and power banks come with their own strict set of rules worth understanding before you pack.

The Lithium Battery Mandate: Why Your Power Bank Stays With You

While rules about liquids on plane travel get most of the attention, lithium battery restrictions carry equally serious consequences—and the penalties for getting it wrong go beyond a delayed security line.

According to the Federal Aviation Administration (FAA), spare lithium batteries and power banks must travel in carry-on bags only—they are strictly prohibited in checked luggage. This isn't bureaucratic red tape. It's a fire safety mandate rooted in a phenomenon called thermal runaway—a chain reaction where a damaged or defective battery rapidly overheats, potentially igniting a fire that's nearly impossible to suppress in an aircraft cargo hold.

Gate-checking alert: If your carry-on is too full to fit overhead and an agent moves it to the cargo hold, you must remove your power bank first. No exceptions.

What typically happens at the gate is a scramble—passengers aren't prepared to pull electronics out of a packed bag under pressure. One practical approach is investing in a bag with a dedicated, easy-access tech compartment that unzips quickly without unpacking everything else.

This design consideration matters more than most travelers realize—and it connects directly to how airports are rethinking what screeners can actually see inside your bag, a shift worth understanding as new scanning technology rolls out across the country.

What's New for 2025-2026? Emerging Tech and Screening Changes

The biggest shift happening at U.S. airports right now isn't a new prohibited item — it's the technology doing the screening. New CT X-ray scanners are being gradually deployed across major airports, and they're changing what the checkpoint process could eventually look like.

Here's how the two screening approaches compare:

The critical caveat: Not every airport has CT scanners yet. Until full deployment, pack as if you'll need to remove everything — because at most checkpoints, you still will.

What TSA will likely ask you to remove in 2025:

• Laptops and large electronics (tablets, e-readers)

• Your quart-sized liquids bag

• Jackets, belts, and bulky outerwear

• Shoes at non-PreCheck lanes

One practical approach is designing your bag for the current reality, not the future one. A flat-unzip bag design — where the bag opens completely flat — allows screeners to see your contents clearly, reducing the chance of a secondary inspection regardless of which scanner is in use.

Smart packing today means choosing gear that works across both old and new systems. As you put together a complete, TSA-ready packing strategy, that kind of adaptable organization makes all the difference — which is exactly what the right tools can deliver.

Conclusion: Find Your Way Through the Terminal

Navigating airport security doesn't have to feel like a guessing game. Throughout this guide, the core principles have remained consistent: know the 3-1-1 liquid rule inside and out, declare exemptions like medications and formula before you reach the bin, keep lithium batteries in your carry-on, and stay ahead of evolving screening technology. These aren't arbitrary hurdles — they're a system, and systems reward preparation.

The single biggest factor separating a smooth security experience from a stressful one is organization. When your bag is packed with intention, you're not frantically digging for a quart-sized bag or wondering whether your power bank is buried at the bottom. According to TSA guidelines highlighted for 2025, being prepared before you reach the checkpoint is one of the most effective ways to avoid delays and secondary screening.

That's exactly where the right gear makes a measurable difference.

Final Checklist Before You Fly

• ✅ Liquids are 3.4 oz or under, packed in a single clear quart-sized bag

• ✅ Exemptions (medications, baby formula, gel ice packs) are separated and ready to declare

• ✅ Electronics and lithium batteries are accessible in your carry-on, not checked luggage

Ordyyy's 4-compartment toiletry bags and packing cubes are built with this checklist in mind — giving every item a designated home so your bag practically packs itself. Less guesswork at the checkpoint means less stress from curb to gate.

Ready to travel smarter? Explore Ordyyy's organization systems and build a packing setup designed for the modern traveler.