Sachin Walls
When travelling with liquids, it's important to be aware of the restrictions in place at airport security. Most airports follow the 3-1-1 rule, which means you can carry liquids in containers of no more than 3.4 ounces (100ml) that fit inside a clear, quart-sized bag. This includes liquids, gels, creams, and pastes. Medications, baby formula, and duty-free liquids may be exempt from these restrictions under certain conditions. It's recommended to pack larger liquids in checked baggage and inform TSA officers of any exceptions to avoid delays during screening.
| Characteristics | Values |
|---|---|
| Amount of liquid allowed per container | 3.4 ounces or 100ml |
| Total amount of liquid allowed | As many 3.4-ounce containers that can fit in a quart-sized bag |
| Type of bag | Clear, transparent, and resealable |
| Exceptions | Medically-necessary gel ice packs, IV bags, pumps, syringes, accessories to medical supplies, medications, baby formula, live fish, duty-free liquids, hand sanitizer (up to 12 ounces) |
| Liquids prohibited | Powders over 350ml or 350g for flights to the US |
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What You'll Learn
Liquids, gels and aerosols must be 3.4oz or 100ml
When travelling with liquids, gels and aerosols, you must adhere to the 3-1-1 rule. This means that you can carry containers that are no larger than 3.4 ounces (100ml) of liquids, gels and aerosols. All of these containers must fit into a clear, quart-sized (1L) bag. Only one bag is allowed per passenger.
The 3-1-1 rule was created by explosive experts after a plot to explode planes flying from the UK to the US was thwarted. The plot involved smuggling liquid explosives onto the plane in plastic drink bottles. The 3-1-1 rule is an international guideline, with the 3.4-ounce limit keeping rules consistent with international regulations.
Any liquids, gels and aerosols that are over 3.4 ounces or 100ml should be packed in your checked baggage. This includes duty-free liquids, which must be in a secure, tamper-evident bag and not show signs of tampering.
There are some exceptions to the 3-1-1 rule. Medication, for example, does not need to follow this rule, though non-prescription medication does. Baby and toddler food and drinks are also exempt. Live fish are another exception, as long as they are in a clear, transparent container.
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Only one clear, quart-sized bag per passenger
When packing liquids in your carry-on luggage, it's important to follow the guidelines to ensure a smooth security screening process. The Transportation Security Administration (TSA) has implemented the 3-1-1 rule for liquids, which simplifies to:
- 3.4 ounces or 100 milliliters: Each liquid container can hold a maximum of 3.4 ounces or 100 milliliters. This is often referred to as the "3" in the 3-1-1 rule.
- 1 quart-sized bag: All your 3.4-ounce containers must fit into one clear, quart-sized bag. This bag is the "1" in the 3-1-1 rule. It should be approximately 7" by 8'" or 20 cm by 20 cm in size.
- 1 bag per passenger: This is the final "1" in the 3-1-1 rule. Each passenger is allowed only one such bag. This helps standardise the amount of liquids brought on board and simplifies the screening process.
It's important to note that this rule applies to liquids, gels, creams, aerosols, and pastes. You can bring duty-free liquids purchased internationally on your connecting flight to the US, but they must be in a secure, tamper-evident bag. Additionally, frozen liquids are exempt from the 3-1-1 rule, but they must be completely frozen. If they are partially melted or slushy, they must comply with the 3-1-1 requirements.
For checked baggage, the TSA has more lenient rules. You can pack liquids, creams, gels, drinks, and toiletries in your checked baggage. However, some items, like liquor, wine, beer, and aerosols, have specific restrictions or requirements. It's always a good idea to check with the TSA guidelines or the guidelines of the country you're travelling to for any updates or changes.
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Medication is exempt from the rules
For the most part, airports have strict rules regarding liquids in carry-on luggage, limiting travellers to containers of 3.4 ounces (100ml) or less that fit in a quart-sized bag. Any liquids that do not meet these requirements must be packed in checked baggage. However, medication is exempt from these rules.
TSA allows larger amounts of medically necessary liquids, gels, and aerosols in reasonable quantities, but they must be declared to TSA officers at the checkpoint for inspection. Medication that requires refrigeration should be stored in an insulated container with gel or ice packs and declared to the screening officer. Syringes and needles are permitted when accompanied by medication that requires their use, but ensure that needle guards are in place and inform the screening officer.
Non-liquid medications, such as solid tablet forms of non-prescription medications like acetaminophen, ibuprofen, and vitamins, are not subject to volume restrictions. However, certain powders and granular materials, such as mineral-based supplements, are limited to a total quantity of 350ml or less in carry-on baggage.
It is recommended that travellers inform their airline about any medications that require special handling or storage, including in-flight refrigeration needs, when booking or at check-in. Travellers are also encouraged to contact the relevant authorities, such as CATSA's customer service team, for specific questions or concerns about bringing medication on a flight.
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Duty-free liquids must be in a sealed, tamper-evident bag
Liquids in carry-on luggage must be in containers with no more than 3.4 ounces (or 100 milliliters) of liquid. Containers with larger amounts of liquid must be packed in checked baggage. However, travellers are allowed to bring a quart-sized bag of liquids, aerosols, gels, creams, and pastes in their carry-on luggage.
For duty-free liquids, travellers may carry liquids in containers larger than 3.4 ounces or 100 milliliters in their carry-on bag, but only if they are in a secure, tamper-evident bag. Tamper-evident bags are typically transparent and sealed with a security feature that indicates if the bag has been opened. These bags are often used for duty-free purchases of alcohol, perfume, and other liquids that exceed the standard carry-on limits.
To carry duty-free liquids in a tamper-evident bag, travellers must ensure that the liquids were purchased internationally and that they are travelling to a destination with a connecting flight. The duty-free liquids must be packed in a transparent, secure, tamper-evident bag by the retailer and must not show signs of tampering when presented for TSA screening. Additionally, travellers must present the original receipt, which should be no older than 48 hours.
It is important to note that even with duty-free liquids in a tamper-evident bag, any item that alarms or cannot be screened will not be permitted in the carry-on bag. In such cases, travellers may need to place the items in their checked baggage or follow specific instructions from the TSA. Some travellers have reported that TSA agents may allow duty-free liquids if the sealed bag has the receipt clearly visible, especially for items like wine where the contents can be easily identified.
To summarise, duty-free liquids in containers larger than 3.4 ounces or 100 milliliters can be carried in a carry-on bag if they are in a sealed, tamper-evident bag, purchased internationally, and travelling to a connecting flight destination. However, specific regulations and exceptions may apply based on the country and airport security protocols.
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Liquids bought after passing TSA are allowed
Liquids bought after passing TSA checkpoints are allowed on the plane. Liquids, gels, and aerosols that are 3.4 ounces (100ml) or less per item are allowed in your carry-on luggage. These items must fit in a quart-sized bag to be brought through the checkpoint. Liquids over 3.4 ounces or 100ml must be packed in your checked baggage.
If you are bringing duty-free liquids on the plane, they must be in a secure, tamper-evident bag. The liquids must be packed in this type of bag by the retailer and not show signs of tampering when presented for TSA screening. The original receipt for the liquids must be present, and the purchase must have been made within 48 hours. Duty-free liquids that meet these requirements are allowed in your carry-on bag.
Liquids bought after passing TSA security are allowed on the plane because they are considered "safe." This includes bottled water and other beverages. Powders are also screened by TSA, so it is recommended to pack these items in your checked baggage.
It is important to note that even if an item is generally permitted, it may be subject to additional screening or not allowed through the checkpoint if it triggers an alarm during the screening process, appears to have been tampered with, or poses other security concerns. The final decision rests with the TSA officer on whether an item is allowed through the checkpoint.
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Frequently asked questions
You can take liquids of up to 3.4 ounces (100ml) in your carry-on luggage. All liquid containers must fit in a clear, quart-size bag.
Any liquids that don't meet these limitations cannot go through security and will be confiscated. However, there are exceptions for certain items, including baby food/drink, medication, and distilled water for CPAP machines. If you need to carry liquids for a medical condition, it is recommended that you clearly label them.
Liquids purchased at the airport or on duty-free are allowed, as long as they are in a secure, tamper-evident bag.
