What does 311 means for Airlines?
Besides, long queues and security checks, the 3-1-1 rule shapes the entire flying experience. It limits how much liquid passengers can bring in their carry-on, affecting every airline. Refer to this blog by SkyTravelFly to get all the details on 311 regulations.
What is 311 airlines rule?
The 3-1-1 rule is a TSA regulation designed to control the amount of liquids passengers can carry in their hand luggage. It applies to all flights within and departing from the U.S. and is commonly enforced in other countries as well. The name itself breaks down the 311 rule: 3.4 ounces (100ml) per container, 1 quart-sized bag, 1 bag per traveler.
This means any liquids, aerosols, gels, creams, or pastes you bring must be in containers no larger than 3.4 ounces. All these items must fit into a single, resealable quart-sized bag. The rule has been in place since 2006 as a security measure to reduce the risk of hazardous substances being brought onboard.
For those carrying medications, baby formula, or breast milk, exceptions exist, but these must be declared at security checkpoints as per the 311 policy. To avoid any last-minute hassle, it’s always best to prepare your liquids bag before reaching the airport. A quick check before packing can save time and prevent the inconvenience of tossing out items at security. Call airline customer support at 1-888-415-1531.
Which airlines have 311 rule?
The 3-1-1 rule applies to every airline operating within or departing from the United States. No matter which carrier you choose, the TSA enforces this restriction on liquids in carry-on bags.
Major U.S. airlines like American Airlines, Delta, United, Southwest, and Alaska Airlines follow this rule, as do international carriers flying into or out of the U.S., including British Airways, Emirates, Lufthansa, Air Canada, and Qatar Airways. Since this is a security regulation, it isn’t up to individual airlines—it’s a standard applied across all flights under TSA guidelines.
If you're traveling internationally, many countries also enforce similar restrictions. Airports in Europe, Canada, Australia, and several Asian countries follow the 100ml liquid rule, making it important for travelers to check airport policies before packing. No matter the airline, preparing your liquids in a quart-sized bag can help you clear security faster.
Are there exceptions to 311 liquid rule?
The TSA has outlined the following exceptions to the 3-1-1 rule:
Prescription medication: Liquid medications, including cough syrup and insulin, are not restricted to the 3.4-ounce limit. They must be declared at security and may require additional screening.
Infant food: Breast milk, formula, and baby food are allowed in larger quantities. Parents or guardians should inform TSA agents at the checkpoint for proper screening.
Duty-free liquids in sealed bags: Alcohol, perfumes, and other duty-free liquids purchased internationally can be carried onboard if they’re in a secure, tamper-evident bag. The purchase must have been made within 48 hours, and the original receipt should be presented.
While these exceptions allow travelers to carry more than the standard limit, all items must be screened. If any liquid triggers security alarms, additional checks will be conducted before it is cleared for travel. Dial 1-888-415-1531 to get insights from travel experts.
The 3-1-1 rule is a crucial part of air travel security. While it might feel restrictive, knowing the exceptions and packing accordingly can make the process much smoother. A little preparation goes a long way in getting through security without stress. Dial 1-888-415-1531 to get assistance from 24/7 available travel expert of SkyTravelFly.