Do you still have to put liquids in plastic bags in 2026?

Do you still need a plastic bag?

Navigating airport security requirements involves understanding carry-on do you still have to put liquids in plastic bags rules and packaging standards. Knowing these regulations helps travelers avoid checkpoint delays, prevent item confiscation, and ensure a smooth boarding process.

Do you still have to put liquids in plastic bags in 2026?

Yes, you still have to put travel-size liquids in a clear plastic bag at most airport security checkpoints in 2026. The global rules regarding carry-on toiletries can be related to many different factors, and the exact requirements depend heavily on the specific machines installed at your departure terminal. While technology is shifting, standard security protocols remain firmly in place for the vast majority of commercial flights.

The iconic baseline requirement for standard travel is the federal standard known as the tsa liquid rules. This means every liquid, gel, paste, cream, or aerosol must be stored in a container holding 3.4 ounces (100 ml) or less. All of these items must comfortably fit inside a single quart-sized, transparent, resealable plastic bag. Each passenger is strictly restricted to one bag in their carry-on luggage. Even common grocery products like peanut butter or hummus fall under this rule.

I remember the first time I traveled after a long break, I assumed a slightly larger, half-empty tube of face wash would pass. It did not, and watching it get thrown away at the gate was an annoying lesson about hard container limits.

How advanced CT scanners are changing the security line

The confusion for many travelers stems from the rapid rollout of modern computed tomography (CT) scanners. These advanced systems generate crisp 3D imagery of bag contents, allowing security personnel to rotate and inspect your luggage from multiple angles. In security lanes fully equipped with this newer technology, you can typically can you leave liquids in your bag with new scanners during screening. However, there is a catch.

In the United States, the presence of a CT scanner does not change the physical size restrictions. The container volume cap remains 3.4 ounces, and items must still fit into that single quart bag, even if you are allowed to keep the bag zipped inside your luggage. Security deployment moves slowly - nationwide coverage for these new machines might not be finished for years. Because of this patchworked rollout, you must always pack for the rule, not the specific machine.

International variations and the 2-litre rule

The rules are completely different once you cross international borders. A growing list of major international transportation hubs have officially discarded the classic 100ml limit entirely. At these specially upgraded terminals, passengers can bring liquid containers holding up to 2 litres directly through security checkpoints. Furthermore, these lanes do not require you to pull out your toiletries or wonder are plastic bags still required for toiletries at airport gates.

Look, navigating this is not as simple as it looks. The reality is that rules vary wildly from one city to the next, even within the same country. For example, while massive hubs like Heathrow have dropped the limit, other major European terminals still enforce the older restriction. This creates an unpredictable environment for return or connecting journeys. You could easily breeze through security with a full bottle of shampoo on your departure flight, only to have it confiscated on the way back home.

Exempt items you do not need to pack in the bag

Thankfully, certain essential liquids are legally exempt from the 3-1-1 rule for carry on liquids constraint regardless of where you fly. Security guidelines allow you to bring reasonable quantities of medically necessary items. This encompasses over-the-counter or prescription medications in gel, liquid, or aerosol form, as well as necessary ice packs. Parents traveling with young children can also freely pack infant formula, breast milk, juice, and baby food without container size worries.

Quick note: If you have pre-existing medical conditions, rely on liquid prescriptions, or are traveling with an infant, make sure to inform a security officer before your baggage enters the screening machine. These items should be separated from your main toiletries for independent screening.

Comparing airport liquid rules by region

United States (Standard Terminal)

The clear plastic bag must be removed and placed in a bin

Yes, must be a single quart-sized clear bag

Maximum 3.4 ounces (100 ml) per item

United States (CT Scanner Lane)

Liquids can remain packed inside your carry-on luggage

Yes, standard federal packing guidelines still apply

Maximum 3.4 ounces (100 ml) per item

Upgraded International Hubs (e.g., Heathrow) ⭐

Liquids can remain packed inside your carry-on luggage

No clear plastic bag is required for screening

Expanded up to 2 litres per container

Hùng's airport security breakdown in London

Hùng, a 34-year-old corporate consultant from Hanoi, was traveling through London Heathrow on a business trip. He had heard news reports that the old 100ml travel limits were completely dead.

He packed a premium 500ml bottle of hair product directly into his carry-on bag without using a plastic bag. At the departure security line, everything went smoothly as advanced scanners let him leave it inside.

The turning point arrived during his return journey through a smaller connecting terminal. Security officers stopped the belt and pulled his bag aside for a hand check because they were running older 2D equipment.

His expensive hair product was immediately confiscated because it violated the local 100ml cap. Hùng lost money and learned that planning for the strictest rule is the only way to avoid terminal friction.