What is TSA?
The Transportation Security Administration (TSA) was created in the wake of 9/11 to strengthen the security of the nation’s transportation systems while ensuring the freedom of movement for people and commerce. Within a year, TSA assumed responsibility for security at the nation’s airports and deployed a Federal workforce to meet Congressional deadlines for screening all commercial airline passengers and baggage. In March 2003, TSA transferred from the Department of Transportation to the Department of Homeland Security.
TSA employs a risk-based strategy to secure U.S. transportation systems, working closely with stakeholders in aviation, rail, transit, highway, and pipeline sectors, as well as the partners in the law enforcement and intelligence community. The agency will continuously set the standard for excellence in transportation security through its people, processes, technologies and use of intelligence to drive operations.
Make Your Trip Better Using 3-1-1
TSA and our security partners conducted extensive explosives testing since August 10, 2006 and determined that liquids, aerosols and gels, in limited quantities, are safe to bring aboard an aircraft. The one bag limit per traveler limits the total amount each traveler can bring. Consolidating the bottles into one bag and X-raying them separately from the carry-on bag enables security officers to quickly clear the items.
3-1-1 for carry-ons = 3.4 ounce (100ml) bottle or less (by volume) ; 1 quart-sized, clear, plastic, zip-top bag; 1 bag per passenger placed in screening bin. One-quart bag per person limits the total liquid volume each traveler can bring. 3.4 ounce (100ml) container size is a security measure.
Be prepared. Each time TSA searches a carry-on it slows down the line. Practicing 3-1-1 will ensure a faster and easier checkpoint experience.
3-1-1 is for short trips. If in doubt, put your liquids in checked luggage.
Declare larger liquids. Medications, baby formula and food, and breast milk are allowed in reasonable quantities exceeding three ounces and are not required to be in the zip-top bag. Declare these items for inspection at the checkpoint. Officers may need to open these items to conduct additional screening.
Resources (from the official TSA website)
Downloads for Travelers